Mapping Christ's Future - Space Planning Study- Domus Site by MICA

Mapping Christ’s Future

Space Planning Study - Draft Domus Site 754-MICA-ZZ-ZZ-RP-A-70002-P3

Mapping Christ’s Future A cohesive retrofit and development plan for the Christ’s College Domus site The College needs to review its requirements for library and study space for the decades ahead and this documnent confirms the plans. Sustainability considerations have also become more significant in the last few years: the College is committed to reducing its carbon utilisation. The College wishes to review its usage of space to ensure that it is making best use of the space available for providing facilities for students, Fellows, and staff within the constraints of the historic fabric of the buildings. There are inevitable constraints on accessibility brought about by the historic buildings on site. The College wishes to improve accessibility wherever possible. MICA Architects were appointed by Christ’s College following an invited competition in spring 2023 to review and prepare a long-term strategy for the College’s Domus site, in an exercise known as “Mapping Christ’s Future”. The strategy ensures that carefully planned interventions in existing buildings and potential new development align to a cohesive vision that provides a pathway towards net zero greenhouse gas emissions, provides universal access for people of all abilities, and enhances spatial efficiencies across the College. This document represents the output of this process together with the appendices.

Christ’s College Cambridge

Executive summary A future strategy for Christ’s College

Spatial Efficiency

The following document sets out a long-term strategy for the Domus site identifying future potential projects and changes over the next 25 years together with short-term development opportunities that address current priorities and needs. Twenty interventions together with holistic energy strategies improve space and facilitate access. Our aim is to augment an extraordinary historic built environment and bucolic landscape setting with changes that are discrete and complementary to the character of Christ’s. Internally, the same sensitive approach has been taken with the added objective of peeling away 20th century additions to reveal original features and historic arrangements.

Improvements are put forward that improve efficiency of space, provide new space including a new library and study constellation, consolidate uses and--above all--improve the quality and environment of a number of important existing spaces in College. Improving teaching, Fellows’ accommodation, support, and study provisions are balanced with improvements to social, communal and opportunities to improve wellbeing.

Attention should be drawn to the question of library study spaces, and choice of potential sites, given the need to move this question forward.

Consultation The enclosed work has been borne out of extensive consultation and engagement with Fellows, students, staff and alumni across events, workshops, online polls, questionnaires and a significant number of meetings and presentations throughout the process. A summary of this consultation is enclosed. Equally, proposals and timelines have been developed iteratively and have been amended in line with discussions throughout the process.

Structure The body of the Mapping Christ’s Future document covers the three primary objectives of the strategic mapping and planning exercise, namely: improving the use of space, a route to carbon reduction goals and improvement of access across the Domus site, with several proposals meeting two or all of the three criteria. Improvement opportunities are also categorised in response to consultation and the emerging themes of the engagement feedback held in the first half of the process. Finally, opportunities consider the character, unique qualities and significant constraints of the site arriving at twenty discrete opportunities that make improvements singularly, collectively and in a number of sequential arrangements.

Pathway to Net Zero A comprehensive carbon reduction strategy has been drawn up to achieve 30% carbon reduction commitments by 2030 and carbon neutrality by 2048 or sooner. The work has been carried out by MICA, Clearwater services engineers and Beyond Carbon with input from specialist engineers and suppliers. The strategy considers ways to reduce energy use across the estate with new renewable energy sources (ground source and air source heat pumps, photovoltaics) providing a balanced new strategy to replace the existing fossil fuel energy supply.

Universal Access Primarily focussing on physical access improvements across the Domus site, the new strategy provides opportunities to transform step-free access across communal spaces such as Upper Hall, Library and the Old Combination Room together with accessibility to a number of residential staircases and upper floor teaching rooms.

Priorities and programme Opportunities have emerged within the duration of the Mapping exercise to be able to bring forward the construction of a new library and study space. This priority, together with an established maintenance programme and carbon reduction commitments has resulted in a high-level implementation programme and prioritisation schedule. Two versions of this exist depending on library and study options. All opportunities have been costed by Gleeds cost consultants and are available, cross referenced, in a separate document. The enclosed information is a summary, rather than full record, with further information available in particular on spatial, energy modelling and carbon studies.

MICA

Team MICA Architects Ltd. 123 Camden High Street, London NW1 7JR Tel +44 (0)20 7284 1727 info@micaarchitects.com MICA have extensive experience in collegiate space planning, particularly in courtyard typologies. We are innovators in sustainable design strategies and experts in working in the most challenging and sensitive of settings. MICA has won numerous awards for our work, most recently Architect of the Year 2020, multiple RIBA, Civic Trust awards and two Stirling Prize nominations. Behind all this is a space-making approach to our work, informed by how interior and exterior spaces interact with each other, how people navigate and use space.

Gleeds 95 New Cavendish St, London W1W 6XF Tel +44 (0)20 7631 7000 Gleeds cost consultants have provided broad Order of Cost Estimates for a series of projects on a £/m² basis or by pricing individual components of the project. The College and design team would then review the draft report and costings, and make comments, propose amendments and we would amend our estimates to support the revised report. Gleeds have good knowledge of Heritage and College projects and can use live rates from previous projects to build up our cost estimates. The estimates also include allowances for landscaping, contingencies, general costs, fees and VAT to build up a full project cost.

Clearwater Cringleford Business Centre, Intwood Rd, Cringleford, Norwich NR4 6AU Tel +44 (0)1603 451595 Clearwater services engineers offer practical design solutions always considered in the framework of environmental and best value including long term use and life cycle considerations. Clearwater are mechanical, electrical and plumbing engineers led by Andy Long who is one of our longest serving engineering consultants having delivered many public, cultural and commercial projects with MICA. We have worked together for over 15 years on a variety of projects fostering an understanding and sympathetic response to integrating design solutions from feasibility through to completion and handover.

Issue

Date

Initial costing issue

25.08.23

Draft to Governing Body

29.09.23

Competition Issue

06.12.23

Christ’s College Cambridge

Contents Introduction 9 Brief Overview Consultation Baseline Audit

Spatial Strategy 31 Study & Library 37 Social & wellness 57 Consolidate operations 77 Renovate & Improve 93 Future Capacity 109

Pathway to Net Zero

115

Universal Access 137 Phasing 147

Output Report 2023

MICA

Christ’s College Cambridge

1 Introduction

Output Report 2023

MICA

Brief Overview

Striving for excellence

Inclusive community

Welcoming communities

MICA Architects were appointed by Christ’s College following an invited competition in spring 2023 to review and prepare a long-term strategy for the College’s Domus site, in an exercise known as “Mapping Christ’s Future”. The strategy ensures that carefully planned interventions in existing buildings and potential new development align to a cohesive vision that provides a pathway towards net zero greenhouse gas emissions, provides universal access for people of all abilities, and enhances spatial efficiencies across the College. Christ’s College is a remarkable institution that has been at the cutting edge of education for more than 500 years. In 2023 the institution is a diverse and inclusive environment and of a scale that is friendly, familiar and personal. The beautiful medieval College sits in the heart of Cambridge with many outward looking faces and interior oases. The college offers strong tutorial support for its students and is deeply proud of its excellence in its scholarships. The College is remarkable for having incredibly high student satisfaction. Christ’s has continued to engender a sense of collegiality, quality and sustainability, that evidently its student and staff population value highly. The campus presents several opportunities which complement the academic facilities with their emphasis on interdisciplinary collaboration. The brief as encapsulated in the competition focussed on three key containers, which are unpacked in a little more detail on the following pages:

spatial efficiency; universal access;

Long-term conversations

Introduction

and a pathway to net zero.

Christ’s College Cambridge

Spatial Efficiency The collection of buildings that make up the college estate range in age and importance with a number of Grade 1 and 2 Listed structures as well as the renowned 20th century building by Sir Denys Lasdun. These offer different complexities in how to optimise space and how they can be adapted to provide the accommodation required by Christ’s at this time. Along with identifying areas of opportunity it is important to understand the way the College community view the nature of study in the current times and therefore the type of spaces that may be required. The optimisation of space also needs to consider how the College community move around the site, looking at key routes, entrances, dwell areas and open spaces. These interactions

Output Report 2023

and chance encounters as one moves around the site are as important as the conversations at dinner in Hall. This approach means that it is a benefit to spread uses around the buildings ensuring a lively and engaging collegiate atmosphere is maintained across the site throughout the day. The open spaces between the buildings are equally important; our study of how these can also be optimised and enhance will be of benefit to a long term College-wide vision. As well as spaces within the heart of the College we feel the spatial strategy identifies areas of opportunity that address the wider public realm and the Cambridge outside the college boundary. The site offers a number of opportunities for this not least on Hobson Street, Christ’s Lane and even onto Christ’s Pieces.

MICA

Brief Overview

441

Undergraduates

272 Postgraduates

93 Fellows

Universal Access Improving access to the site for those with limited mobility is essential, ensuring that Christ’s continues to attract the best and brightest students, academics and staff, regardless of their physical mobility. Historic environments inevitably create constraints that make this challenging. Identifying suitable locations for vertical transportation options that can unlock maximum areas of upper-level accommodation is important. The current library site is one of the few areas near First Court that offers a location outside the listed buildings and therefore its location and the subsequent optimisation of space adjacent to it should look to maximise access to the College facilities in that area. A similar approach has been achieved with the location of the lift in the new Yusuf Hamied Court has provided step free access to the Todd Building. Along with these more strategic moves to improve accessibility we have explored smaller interventions that can have a big impact such as removing any steps at ground floor access points or within the landscape. In conjunction with these physical alterations, we have identified spaces that could be relocated to ensure improved accessibility are available to all, and built on the premise that all activities or events that are open to all are located in universally accessible spaces. This will allow areas with more limited opportunities to provide step-free access to be allocated to activities with less requirements for such universal access. Through these interventions more people being able to access more of the College’s estate and to ensure it becomes a truly accessible community.

Introduction

Christ’s College Cambridge

Ground source heat pump example installation

Photovoltaic test install on the Lasdun Building

A biodiverse Fellows’ Garden

Air source heat pump serving Yusuf Hamied Court in the Lasdun undercroft

Pathway to Net Zero The intention outlined in the College’s Environmental Sustainability Strategy to remove gas usage from a number of buildings is sensible but must be paired with an intensive programme of building retrofit to reduce the required energy as a first priority. Then, this will be combined with practical locations for the necessary supporting infrastructure to achieve this. Air source heat pumps require large pieces of equipment and generates noise, whereas ground source heat pumps are essentially hidden below ground but require open areas at a distance from trees to avoid interference from roots. Roof-located equipment including photovoltaic solar panels require carefully considered locations that are available for maintenance access and can gain support from the local planning officers.

As the College buildings are refurbished it is sensible to look at opportunities to improve window glazing, thermally insulate roof spaces, and improve external wall with internal insulation where there are no restrictions from historic internal architectural details. With the initial target of reducing the Colleges carbon footprint by 30% by 2030 the bigger challenge will be getting to net zero by 2048, in alignment with the University of Cambridge target. As a result, the space planing focusses on how to achieve this longer term target and how to improve the environment holistically including water control and use, biodiversity and embodied carbon.

The College is committed to reducing its carbon utilisation, replacing existing gas boilers with air and ground source heat pumps, and installing solar panels.

Output Report 2023

MICA

April

Consultation

STAGE 1 Listening and establishing the brief Inception meeting Listening and establishing the brief

May

Workshop 01 Optimisation of existing College spaces

Workshop 02 How to reduce the carbon footprint of College

Open conversation

Circulation of Electronic questionnaire Workshop 03 Opportunities for a more accessible environment Online survey

June

STAGE 2 Workshops Workshop 04 Fellows’ strategy day

Public exhibition

July

Comments box

Aug

Workshop 05 Presentation of draft masterplan to Governing Body

STAGE 3 Concluding Workshop 06 Review of draft masterplan

Workshops Workshop 07 Review of draft delivery strategy and cost model Sept Stakeholder presentations

Varied consultation methods and events helping to shape the College’s future

Final presentation Client Feedback Draft report Final report

Introduction

Christ’s College Cambridge

Engaging with the College Over the course of the Easter term, the team met with around 400 members of the college, including staff, students, fellows, and alumni; conducted three college-wide workshops; held three staff and Fellows focussed workshops; presented three times to Governing Body; held around 30 in-person meetings; through the open suggestion box and online survey we received over 150 anonymous suggestions. The outline emerging strategy was presented to the Governing Body on the 4th of July, and was then developed into a detailed document with further consultation, the outcome of which was presented at the first governing body meeting of the 2023/24 academic year in early October 2023.

Workshop 1: space utilisation

Space Utilisation The first workshop saw a fantastic and engaged stream of staff, students and Fellows visit the Buttery to talk with Stuart and Jessie about the optimisation of space within the College. Everyone was invited to pin their favourite places within college and the clear consensus was the Buttery itself and the “Chribrary”. The space available within the library and study spaces generally across the college emerged as an important dominant theme, but perhaps equally importantly, those consulted were relatively happy with their sleeping and living accommodation.

Universal Access A second workshop held in the Buttery focussed on the challenges of creating universal access in the historic environs of Christ’s College. We had a wonderful response from staff and students with many new faces joining the discussion. Input included some very knowledgeable individuals with academic and personal expertise on the matter. We collectively mapped patterns of access in and around the domus site, with some unexpected insights (Hobson Street as a short-cut! Secret access to the Fellows’ Garden from Blyth) and information that reinforced our knowledge of current hotspots around First and Bath Courts.

Heading Workshop 2: universal access

Pathway to Net Zero The third all-college workshop was held in the library corridor at the suggestion of students, to ensure that we reached a broader demographic within the restrictions of the busy exam period. Key members of sustainability initiatives including Green Officers and Porters attended this briefing, where we began to unpack the possibilities of district heating networks, whole building energy reductions, and potential for biodiversity and environmental improvement, building on the Christ’s Submission for the University of Cambridge Green Impact Award for Colleges. Site visits and in-person consultation with Porters

Output Report 2023

MICA

Consultation

A broad reach All Staff Meeting Jessie Turnbull attended the termly all-staff meeting and presented the evolving design ideas and opportunities associated with Mapping Christ’s Future to the staff. Great discussions were had with those present, and a number of people stayed to exchange views and talk through the consultation materials on display in the atrium of the Yusuf Hamied Court.

Online survey of all College Members The anonymous online survey for all member of the college was launched on the 8th of June (the same day as the All Staff Meeting) and remained open for one month. 88 responses were received in total, with around a third from members of the JCR, around 20% from the MCR, and 30% from Fellows. Key findings included the key findings noted adjacent The online survey was a useful complement to the in-person engagement carried out over the course of the term, and reinforced areas for intervention that had already risen to the surface, and provided us with qualitative data to corroborate with emerging themes.

Fellows’ Strategy Day A dedicated session was held for Fellows on the 9th of June to ensure that ample space for discussion was afforded between the fellowship outside of the constrained timings of Governing Body meetings. This session included initial findings from the consultation workshops, including the emphasis on study and library, as well as benchmarking on the library space against those offered by other colleges within Cambridge and Oxford. Christ’s fell towards the bottom of both tables, with around 0.18 study spaces per student. The group present agreed that a suitable target would be around 0.3 study spaces per student to bring Christ’s towards the upper end of the table. The series of emerging interventions, both internal retrofit and new built, were discussed at a high level, with an understanding of the hierarchy of importance, starting with the experience of entering the college via the Porters’ Lodge and moving through the College sequentially and identifying spaces that could be better used.

Student questionnaire extract: Q18 If you could enact one change at Christ’s, what would it be?

Improve students better Fellows library study spaces buildings make college use space think room new library staff

Introduction

Christ’s College Cambridge

400

150

Number of people engaged

Anonymous written suggestions

In person drop-in workshops

Delivered to the suggestions box during drop-in sessions, while it remained in the Buttery between sessions, and placed in the Porter’s Lodge between June and July of 2023

Three in-person drop-in workshops took place over the course of the Easter term in the Buttery and Library corridor focused around the themes of Space Utilisation, Universal Access and Pathway to Net Zero

Intranet

Benchmarking visits

Archival research

All information presented at meetings was made available through a dedicated intranet page that remains open to staff, students and Fellows of the College, with regular updates and reminders posted about upcoming events and summaries of past events

Members of the Mapping Christ’s Future steering group joined MICA in visiting four colleges to see examples of successful spaces that could inform development at Christ’s College. These included Jesus College, St Catherine’s College, Pembroke College and Clare College.

The team’s research also involved detailed reviews of each part of the College, and consulting the archival records, digitising relevant documents for the first time, and consulting the Royal Institute of British Architects extensive library of drawings and photographs.

Students, staff, Fellows and alumni through in-person group meetings, drop-in workshops, individual meetings and site visits, online engagement, anonymous suggestions, alumni survey and alumni events

Masterplan Output Report Report 20232023

MICA

Consultation Mapping Christ's Future

Q11 Do you consider yourself to have a disability? Answered: 88

Skipped: 0

Prefer not to say

Yes

Summary of findings

10%

20%

30%

40%

50%

ANSWER CHOICES

60%

70%

80%

90%

100%

RESPONSES 4.55%

Prefer not to say

Yes

13.64%

81.82%

TOTAL

Study and Library

Mapping Christ's Future

– The top three uses for the library were private study, accessing

Q1 Are you a member of the... Answered: 88

books and printing – People were put off the library by the poor quality environment, including the lighting, the stuffy atmosphere, and how busy the space becomes – Variety, better lighting, spaces suited to neurodiverse needs could improve the library environment

Universal Access

Skipped: 0

JCR (undergradua... MCR (postgraduat...

Staﬀ

Fellows

Other (please specify)

20 / 34

10%

20%

30%

40%

50%

60%

70%

ANSWER CHOICES

reflecting the fact that key spaces such as upper hall have poor access for those with physical disabilities – Around 14% of those responding had a disability, of which 8% was physical, suggesting that 1-2% of respondents have a physical disability. – A much more significant number had a mental disability or are neurodiverse (almost 20%) – The most problematic areas for access included the library and upper hall and were highlighted as priorities to address

Mapping Christ's Future

Staff

TOTAL

Answered: 85

Skipped: 3

OTHER (PLEASE SPECIFY)

DATE

Master

6/29/2023 11:38 AM

Private Study

undergrad

6/19/2023 2:58 PM

Student Group Study

6/16/2023 9:19 PM

Accessing Support from... Using Computers Socializing in the... Developing Study Skills Printing

1 / 34

Accessing physical boo... 0

Mapping Christ's Future

Answered: 84

Skipped: 4

None of the above / Don'... Adjacent to Stair C Bath Court The Open Are... Edge of the Fellows Garden

11 / 34

Hobson Street Carpark Other/Repurpose an existing...

60%

70%

100%

23.81%

Q12 If answered yes, is this disability...

20 7

10.71%

N/A

22.62%

Other/Repurpose an existing Building (please specify)

10.71%

Skipped: 51

Edge of the Fellows Garden

Physical aﬀecting...

9 84

OTHER/REPURPOSE AN EXISTING BUILDING (PLEASE SPECIFY)

DATE

Physical other Replace the library.

7/7/2023 12:21 AM

Replace exisiting library

7/6/2023 4:11 PM

Plumb

Visual

6/29/2023 3:53 PM

Repurpose the Fellows' Parlor and OCR

6/27/2023 4:21 PM

Auditory X building

6/19/2023 9:03 PM

Construct a new building or add floors to building where toilets are in Second Court

6/19/2023 4:05 PM

Mental Health Best option: build the new library. Second best: next to staircase C.

6/13/2023 4:49 PM

10%

20%

30%

17 / 50% 34 40%

60%

70%

ANSWER CHOICES

80%

90%

100%

RESPONSES

N/A

Christ’s

90%

RESPONSES

0.2

80%

0.4 0.3

50%

23.81%

0.5

40%

Answered: 37 Bath Court - The Open Area between First Court and the Library

Cambridge

30%

8.33%

0.6

20%

ANSWER CHOICES None of the above / Don't Know Adjacent to Stair C

TOTAL

Study spaces per student

10%

Mapping Christ's Future

Hobson Street Carpark

67.57%

Mapping Christ's Future

Physical - affecting mobility

8.11%

Physical - other

2.70%

Q17 Regarding Christ's College's path to net 2.70% zero, please place the 1 Visual following interventions in order of most to least 5.41% important - where most 2 Auditory important is at the top of the list. 13.51%

Mental Health Related

Answered: 78

Christ’s

TOTAL

0.4

Q9 If a new study/teaching building was proposed, where would be the ideal site?

As with the in-person surveys and discussions, improvements to the library and study spaces emerged as a key consideration, but concerns around staff and fellows were also noted.

0.5

27.27%

0.6

17 16

Priorities for change

Oxford

19.32% 18.18%

Q6 What roles do you mainly use the library for? Please place in order of 3 most to least used - where most used is at3.41% the top of the list.

Fellows

The top three priority areas for improvement suggested were: – Retrofitting of older buildings – Renewable energy – Using materials with low embodied carbon impacts

0.0

100%

Other (please specify)

Pathway to Net Zero

0.1

90%

31.82%

JCR (undergraduate student) MCR (postgraduate student)

– Access to the college was rated at 3.4, a relatively low score

80%

RESPONSES

Skipped: 10

Retroﬁting of older buildi... Using materials wi... Stormwater attenuation... Reduction of water use... Biodiversity (creating...

0.3

21 / 34

Biophilia (including...

0.2

Improving rates of hea... Renewable energy (e.g....

0.1

Improving air quality

0.0

Reducing the heat island... Creating spaces for f... 0

Introduction

Christ’s College Cambridge

Q10 How would you rate physical access to Christ’s College?

3.4 Average rating (out of 5) Comments:

- Difficult to hear, mover around, familiarise with buildings - Entrances to staircases require step access: no Braille - Barely any disabled access - Poor lighting after sunset - Had a difficult time touring a wheelchair-disabled prospective student around

Q14 Where would you say is the most problematic area for physical access to Christ’s College (if any) ?

gate Christ pieces lifts disabled wheelchair Parking step needs library Fellows access buildings spaces staircases offices Upper Hall think old stairs court accessible Q7 If you don’t use the library, what puts you off it?

need much often department work place library space lighting use stuffy feels full students

Q8 What would make the library a more attractive / functional space for you?

seating old library areas make use chairs light study space library work space relaxed better desk students think study group study need Q15 What do you think Christ’s College’s three priorities should be in improving access to the college?

spaces ramps lift rooms Upper Hall parking access

accessibility Library wheelchair Better new court people

students rooms spaces staircase social disabled access Output Report 2023

MICA

Consultation

8,000 Alumni

Student questionnaire extract: If you could enact up to three changes or enhancement at Christ’s, what would they be?

Alumni View on Mapping Christ's Future

Need much often department work place library access space lighting use stuffy feels full students

Q1 When did you matriculate? 56 Skipped: 0 When did you matriculate atAnswered: Christ’s?

1950 or earlier

1951-1970

1971-1990

1991-2020

Alumni View on Mapping Christ's Future Other (please specify) 0%

Q210%How often do you return to Christ's? 20% 30% 40% 50% 60% 70% 80% 90% 100% Answered: 56

Alumni Engagement MICA prepared a short statement on the space planning exercise that was included in the summer newsletter to all alumni, along with a short, dedicated alumni survey. In addition to this, MICA were invited to present the emerging themes at the Alumni Gathering on the 1st of July. The consultation material shared with the whole college was available for alumni to review and comment on, and interesting discussions on the possible interventions were had with those who have been very engaged with College development over recent years.

Alumni Survey The alumni survey received almost 60 responses, primarily from those who matriculated after 1971, around 20% who typically returned annually, and almost 40% who returned between two and five years. The alumni were marginally split between the First Court including the Chapel and The gatehouse/St Andrew’s Street façade as the most important aspects of the College. 50% of the alumni respondents thought that the college’s commitment to 30% reduction of fossil fuels by 2030 was not fast enough, although there was also opposition to the transition. When questioned about priorities for the college moving forward responses were mixed but included the library and net zero as key priorities moving forward.

Skipped: 0

ANSWER CHOICES

RESPONSES

of thedo you return to Christ’s? HowNone often

1950 or earlier

0.00%

above

8.93%

1951-1970

More than once a year

1971-1990 1991-2020

Roughly

annually Other (please specify)

TOTAL

44.64%

46.43%

0.00%

Every two to ﬁve years

OTHER (PLEASE SPECIFY)

DATE

There are no responses. Less frequently

Other (please specify)

Alumni View on Mapping Christ's Future

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Q5 What do you view as the most important building or area of Christ's What do you view as the most important building or College (place in order of importance with most important at the top) ANSWER CHOICES RESPONSES area of Christ’s College? None of the above

Answered: 56

0.00%

Skipped: 0

16.07%

More than once a year 10 Roughly annually 9 8 Every two to five years 7 Less frequently 6 5 Other (please specify) 4 TOTAL 3

23.21%

37.50%

21.43%

1.79%

1/9

2 OTHER (PLEASE SPECIFY) 1

DATE

Never, 0 as I don't live in England.

7/20/2023 10:10 AM

Gatehouse and façade to St...

New Fellows' Third First Alumni View on Fellows’ Mapping Christ's Future Court and Building Garden Court court the including including “Typew... Steven... Chapel...

The Yusuf Hamied Court,...

Q6 The college’s current trajectory to net zero greenhouse gas emissions1 is a 30% reduction by 2030 and6 a reduction to netTOTAL zero SCO by 2 3 4 to net5 zero greenhouse 7 gas N/A The college’s current trajectory 2050, or sooner if possible. Do you think this is: Gatehouse and 37.04% 31.48% 16.67% 11.11% 1.85% 1.85% 0.00% 0.00% emissions is a 30% reduction by 2030 and a reduction to net

façade to St Andrew’s 20 17 9 6 1 1 Answered: Do 56 you Skipped: 0 this is: zero by 2050, or sooner if possible. think Street

First court including 60.00% Chapel, Hall, Bodley 33 None of the Library and Buttery

36.36% 20

3.64% 2

0.00% 0

Fellows' Building

1.85% 1

7.41% 4

20.37% 11

38.89% 16.67% 212 / 9 9

5.56% 3

7.41% 4

1.85% 1

23.21% 13

32.14% 18

21.43% 12

19.64% 11

1.79% 1

0.00% 0

Third Court includingToo optimistic 1.85% Stevenson Building, 1 Blyth and Y

0.00% 0

18.52% 10

24.07% 13

40.74% 22

12.96% 7

1.85% 1

0.00% 0

New Court and the Not fast enough 0.00% “Typewriter” including 0 Yusuf Hamied Centre

3.64% 2

10.91% 6

0.00% 0

12.73% 7

50.91% 28

20.00% 11

1.82% 1

Other 0.00%

0.00% 0

1.85% 1

5.56% 3

22.22% 12

61.11% 33

9.26% 5

10%

above / Don'...

Fellows’ Garden

About the right... 1.79%

The Yusuf Hamied Court, completed in 2023

Introduction

20%

30%

40%

50%

60%

70%

80%

90%

100%

Christ’s Christ’s College College Cambridge Cambridge ANSWER CHOICES

RESPONSES

None of the above / Don't Know

3.57%

Steering group visit to Clare College

St Catherine’s College courtyard and dining hall improvements

Jessie Turnbull of MICA presenting to the All Staff Meeting, May 2023

Pembroke College dining hall and student cafe social spaces

Steering Group Benchmarking

Cost, Phasing and Sustainability

To complement the design information that was presented to the Fellows and staff towards the end of Easter Term, members of the Mapping Christ’s Future steering group joined MICA in visiting four colleges to see examples of successful spaces that could inform development at Christ’s College. At Jesus College we visited the library from 1996, which remains successful and well-used, as well as the new Porters’ Lodge and café overlooking the gardens completed around 2017. The Steering Group were really impressed by the openness and connection to nature offered by “the Roost” and acknowledged that Christ’s could benefit from spaces with better connection to the important asset gardens. The surgical intervention of River Room at Clare College, tucked in behind the existing Hall and SCR spaces, creates step free access to several historic parts of the college, a café for informal student socialising and study, and a terrace overlooking the river. The challenges of constrained site access and the priority of spaces, making the most of the First Court historic setting were apparent in this small but impactful piece of architecture. The renovation at St Catherine’s made a very successful dining hall, and let the steering group understand what could be achieved with the existing upper hall at Christ’s. The Pembroke Porter’s Lodge and cafe were interesting case studies of working with existing buildings, fostering openness and public access. We are very grateful to those who welcomed us into these spaces at such a busy time in Easter term.

Output Report 2023

As the principles of the space planning exercise further detailed workshops were held with staff and fellows in August and September 2023, unpacking the implications on the carbon footprint of the college, and how the projects could work together as steps towards a net zero carbon environment, with improved water use and control, greater biodiversity, and a regenerative environment in which to live, work and study. This work was supported by Clearwater services engineers who presented detailed information on building energy use and predicated reductions alongside renewable energy generation on site. This was followed by a dedicated workshop on the cost of the proposed interventions and possible routes for phasing, supported by Gleeds cost consultants.

Dedicated follow-up conversations In addition to the formal workshops advertised in advance to the whole college community, MICA held dedicated workshops with key stakeholders, including all heads of departments, representatives of the MCR and the JCR including tours of their common spaces, the Porters, the catering team, the conference team, the estates team, the nurse and chaplain, the gardens team, the admissions office. The process of consultation and design was punctuated with regular meetings of the Mapping Christ’s Future Steering Group, which consists of key Fellows and staff providing consistent guidance to the MICA team.

MICA

Baseline Audit

Building

Total GIA (m2)

BB - Blyth Building

1,672

CD - C,D & E Wing

974

FB - Fellows Building

1,065

FC - First Court

3,763

LB - Lasdun Building

3,880

LI - Library

765

ML - Masters Lodge

343

PQ - P & Q Building

608

PH - Pool House

SB - Staircase 04 Building

3,101

ST - Stevenson Building

2,229

WS - Workshop Building

232

X- X building

247

Y - Y Building

1,672

YH - Yusuf Hamied Court

3,660

Z - Todd Building

2,012

ZA - Z Annex Building

629

Total

Introduction

Spatial Analysis Alongside the qualitative investigation of the College assets carried out through site visits, discussions with staff, students and fellows, and visual appraisals of existing spaces, we have carried out detailed site-wide analysis to quantify the College’s assets on the Domus site including 17 buildings across 7 courts, housing 372 student rooms, 65 fellows rooms over 11,50m2 of gross internal area. The college domus site comprises almost 33,000m2 or 3.3 hectares. These are the key benchmarks against which all proposals within this strategy are measured.

Baseline conditions The analysis of uses by building demonstrates what is instinctively known by those who inhabit the college daily: – Ground floor uses are very mixed across the college – First court contains the widest variety of uses including operations, study, events, fellows rooms and student rooms – Administration is scattered across the college, clustered on the east side typically at ground floor in Z (Todd Building), Y staircase, V (Stevenson), as well as the sick bay in P and the maintenance building in the Chapel Court – The Yusuf Hamied Court has brought event and conference spaces deeper into the College plan, shifting aspects of College life further to the northwest – On first floor and above the building uses are dominated primarily by student accommodation across the site, with a significant number of fellows accommodation also above ground floor, a useful reminder that, despite the wide array of activities within the curtilage, the buildings are primarily residential – The north façade of the College is bounded by retail frontages, giving little evidence of the college to the outside by passer A full set of analysis drawings is included in appendix.

11,354

Christ’s College Cambridge

Area schedule Area Schedule (sqm) 754 Christs College Masterplan 754-MICA-ZZ-ZZ_SH-A-50000

REVISION C - STAGE 0 6/12/23

Existing Gross Internal Area (sqm)

Room Provisions Building Level

Building

Total GIA (sqm)

Student Rooms

BB - Blyth Building

418

1672

CD - C,D & E Wing*

361

318

295

974

FB - Fellows Building

274

300

191

1065

Student Guest

Fellows Rooms 3

2 16

FC - First Court**

222

1694

1240

607

3763

LB - Lasdun Building

404

601

766

348

420

477

514

341

3880

338

344

765

LI - Library ML - Masters Lodge

172

171

343

PQ - P & Q Building

60 TBC

228

209

608

PH - Pool House

1 [668]

796

921

888

496

3101

ST - Stevenson Building***

464

420

417

2229

WS - Workshop Building

174

232

X- X building

115

247

Y - Y Building

418

1672

YH - Yusuf Hamied Court

1161

1022

984

493

3660

SB - Staircase 04 Building

Z - Todd Building

494

504

506

508

2012

ZA - Z Annex Building

203

173

166

629

11354

372

Total

Fellows Guest

Notes - All figures in square metres - GIA based on RCIS Code of Measuring. May,2015 - Existing area measurements estimated based on building drawings provided by Christs College * C, D & E Wing Includes adjacent plant building ** First Court Area includes kitchens and upper hall but does not include areas devoted to the masters lodge

Notes All figures in square metres GIA based on RICS Code of Measuring Existing area measurements estimated based on building drawings provided by Christ’s College * C, D & E Wing Includes adjacent plant building ** First Court Area includes kitchens and upper hall but does not include areas devoted to the masters lodge ***Basement area based on estimate from site visit (no plans provided)

Output Report 2023

MICA

Baseline Audit

Existing uses across the estate

Existing uses: ground floor 24

Introduction

Christ’s College Cambridge

KEY Study Space Service Space Fellow Room Student Room Kitchens Administration Events Shared WC/showers Retail Social space

Existing uses: typical upper (first) floor Output Report 2023

MICA

Baseline Audit

Heritage and planning Planning Constraints Each of the project identified in here will require a degree of planning permission from the Local Authority, Cambridge City Council, with buy-in from other statutory stakeholders including the water authorities, UK Power Networks, ecologists, arboriculturists, archaeologists and others. Each project will require a sufficient design and planning lead-in as detailed in the phasing section, with new build projects requiring the most significant time. This document will form a part of the narrative as presented to the planners, demonstrating that the College has taken a “whole College” approach to the design, considering each intervention in the wider scheme of implications, and a long view on driving down greenhouse gas emissions across the site.

Conservation Considerations Christ’s College is an extremely important historic setting, within the Cambridge Central Conservation Area, with significant buildings from the 16th, 17th and 18th century, as well as innovative examples of 19th and 20th century architecture. Historic England and the Local Authority Conservation Officers buy-in to these schemes will be essential to their successful implementation. We have made judicious but impactful recommendations on treatment of the heritage building fabric, in line with recently released Historic England technical guidance, all adhering to the principles of retaining features, reversible interventions, and the use of natural conservation materials. However, the balance between retrofit for energy efficiency and the conservation of historic buildings is a live discussion and will require significant work to achieve consensus as each project comes forward. Again, this document should be used to demonstrate the highly synthetic, holistic approach that is being taken to preserve and improve the College buildings so that they can remain active contributors to College life.

Introduction

Christ’s College Cambridge

2023

c. 1993 None

17th c. pool and 18th c. summer house 2010

1970 2008

1913 1985 1880s Unknown

Z X

1905

1953 Unknown

1880s Unknown

1889 Unknown

Blythe

1950 Unknown

1642 Unknown A

1936 2008

18xx 2017

1928 1990

c. 1515 2024/25

1867

16th C. 1875-79 2015

C D E

1825 2005

M L

G K

1913

1976 2020 c.1515 2023/24

1980 - Date constructed 2008 - Most recent retrofit (where known)

1896

1875 2007

KEY Grade I Grade II Positive Building* Building of Local Interest* Tree Preservation Order Site Boundary Grade II Listed Wall Whole domus site: Listed park and garden All within Conservation Area * Defined within Cambridge Historic Core Appraisal, 2017

Masterplan Output Report Report 20232023

MICA MICA27 27

Baseline Audit

The College’s Governing Body will evaluate this document and determine the best course of action based on the information provided within. Should further guidance or advice be sought, MICA, Clearwater and Gleeds will be happy to provide this information, but the intention is that the document alone provides sufficient information for decision-making to proceed based on the College’s needs over the coming decades. As an example of the way of evaluating individual projects, we have mapped their success in fulfilling the three core criteria (space utilisation, universal access, pathway to net zero) as well as the criteria that evolved over the course of the consultation period (study, operations and social/wellness. As is clearly demonstrated, no single project solves all aspects, but collectively and accumulatively, they work together to address each of these issues, and the subcategories of these as they apply to staff, students and Fellows. We recommend that a quantitative analysis is undertaken by the College in this manner, to complement robust and qualitative discussion within a wider forum.

Library Option

space utilisation carbon access study admin social/wellness

Evaluating priorities

Working library Hobson Street Other New Build nest pool house Blyth pavilion Octagon Bath Court and Upper Hall extension artist studio on compost Interior intervention

Study & Library

1. 2. 3. 4. 5.

Bodley library Working library Hobson Street library The Nest Todd Study Hub

Social & Wellness

6. Blyth student hub (multifaith, wellness centre) 7. Buttery & Bath Court 8. Upper Hall 9. Garden Pavilion 10. Lawns to meadows

Operations Consolidation

11. Porters’ Lodge 12. Kitchen 13. Hobson Street carpark 14. Butler’s Pantry 15. North Lodge to staff hub

Porters' Lodge Bodley Library Kitchens Upper Hall Fellows Building Blyth Y Yusuf Hamied Centre lobbies back lodge Todd kitchen Todd study hub Master's lodge Capacity building Hobson Street Carpark Chapel Carpark Third Court South Range Master's Range

Does not achieve brief Contributes to brief

Renovate & Improve

Achieves brief

16. Fellows’ Building 17. First Court 18. Yusuf Hamied Centre 19. Plumb auditorium 20. Blyth and Y 28

Introduction

Christ’s College Cambridge

19 3 13 20 6

10 14 17

8 12

7 1

Output Report 2023

MICA

Christ’s College Cambridge

2 Spatial Strategy

Output Report 2023

MICA

Masterplan Strategy

Study and Library

Social and Wellness

The lack of study space and variety of study environments has emerged as the most pressing issue from the consultation period. Students expressed desire for a variety of study environments to suit different study needs, including sensitivity to light and sound, as well as spaces that suit neurodiverse needs. Fellows also noted the need for additional supervision spaces to suit varying needs.

Christ’s offers wonderful environment for living and studying, with a bucolic setting within central Cambridge, and a newly renovated boathouse on the river, as well as shared sports fields. However, the social spaces within college, particularly for undergraduates, are relatively small. There is great opportunity to enhance this while taking particular advantage of the Fellows’ Garden which is–unusually for a Cambridge College–open to all.

The nature of study Libraries are going through a renaissance, both in terms of the social infrastructure they provide and the diversification of services and experiences offered. In post-Covid academic environments they are playing an increased role in the provision of collaborative workspace and innovation, and as spaces for meaningful interactions to take place. In an increasingly digital educational environment, the “walls” of a library continue to expand beyond the physical space, with an increase in online resources, social media, and mobile services having an impact on how collections are accessed online and on the go. Libraries are and will continue to be places where information is accessed and new knowledge is created, fostering personal development and workplace research skills. In the emerging knowledge economy, new value is created in highly collaborative environments by using immediately digestible information. By uniting the core principles of the student experience – teaching, learning, social experience; ‘hubs’ are perceived as a key means of answering market demands. Teaching spaces are increasingly being designed or remodelled to accommodate project-based or collaborative work with increasing emphasis on flexibility and an approximation to real-world professional environments.

An inherently nurturing environment It is important to offer opportunities for socialising and support wellness for all staff, students and fellows that do not revolve around sports or consuming alcohol, and offering connection to the outdoors all year round, not only when weather permits, mainly in exam term. Spending time in nature, playing music, cooking together, gardening, life drawing, mindfulness, prayer all play a part in supporting wellbeing. While studying in a social environment is desirable for many, it is also important to create spaces that can be protected as a true escape from study, a place to unwind and restore the mind and body. The artist’s studio space (lost to the Yusuf Hamied Court development is required to be reinstated, and a more suitable home created for the multi-faith prayer room. A space for the nurse and wellbeing adviser in a more nurturing and accessible environment would encourage students to seek preventative advice rather than reaching a crisis point. The interventions suggested in this section work holistically to create a social environment that fosters wellness.

Christ’s College Cambridge

Cohesive Administration

Retrofit and Improve

Christ’s College administration functions are scattered across the College estates. In some cases this dispersal is logical and suited to the function, such as Porters, Gardeners and Chaplain, but in other cases this severs functions that would be better served with adjacency

Many of the college’s most prominent and important buildings are in urgent need of renovation, and the logic for making building insulation thermal upgrades is unpacked within the Trajectory to Net Zero chapter. This section unpacks the possibilities of relatively small interior reconfigurations that would solve problems, ease congestion, or improve functionality within the buildings.

Fostering communication

Envelope and Interiors

It has been previously agreed that rooms on the interior of the domus site would be best reserved for students due to their quiet location, freeing up buildings at the perimeter for administration in a more coherent cluster.

Logically interior interventions to buildings should be carried out at the same time as building-wide fabric upgrades. However, some of these interventions are relatively light-touch and simple to achieve for a measurable improvement in welfare or operations, and as such might be considered to take place ahead of time, as the programme of renovations stretches over a considerable period, up to the mid-late 2030s.

Currently administration functions including tutorial office, accounts, HR and admissions are in the ground floor of Y staircase, while the development office is on the ground floor of V. The Todd Building (Z), formerly the council offices, houses the estates and maintenance department, conferences, communications, accommodation office and the Bursar. These could be clustered together within the existing Todd Building which is now fully accessible, or in a dedicated administration building that could provide suitable welfare including break rooms, lockers and showers to promote active travel. Other options for discrete interventions into existing building fabric are explored within this section of projects, aiming to ensure that those that form the backbone of the College’s daily operations are suitably supported to carry out their roles: caring for those who care for others.

Output Report 2023

Interventions that interface specifically with the building thermal upgrades are explicitly flagged, and all of these project costs should be read in combination with the building fabric upgrades. Alone, these are only interior reconfiguration. Building fabric upgrades specifically exclude routine maintenance items, and are focussed on the interventions required to bring down the energy use in compliance with the Pathway to Net Zero strategy.

MICA

Opportunity Areas Spatial opportunities within context

This page summarises the twenty projects, some new build, some interior interventions that have been identified as the outcome of the consultation and design process of Mapping Christ’s Future. Each project is explained in full in the section that follows

Study & Library 1. 2. 3. 4. 5.

Bodley library Working library Hobson Street library The Nest Todd Study Hub

Social & Wellness 6.

Blyth student hub (multifaith, wellness

centre) 7. Buttery & Bath Court 8. Upper Hall 9. Garden Pavilion 10. Lawns to meadows

Cohesive Operations 11. 12. 13. 14. 15.

Porters’ Lodge Kitchen Hobson Street carpark Butler’s Pantry North Lodge to staff hub

Renovate & Improve 16. 17. 18. 19. 20.

Masterplan Strategy

Fellows’ Building First Court Yusuf Hamied Centre Plumb auditorium Blyth and Y

Christ’s College Cambridge

19 3 13 20 6

10 14 17

8 12

7 1

Output Report 2023

MICA

Christ’s College Cambridge

Study & Library 5

Output Report 2023

MICA

Study and Library

STUDY & LIBRARY

Existing conditions of library prior to removal of books

Existing conditions ground floor

Bodley Library Activate the dormant asset Summary Information Brief components: Desk/exhibition to upper library,

Exhibition space, archive reading room

Link to Muniments Room

Law library to Senior Fellows’ study

Dependencies:

Fellow’s room loss of 1

Related projects: Working Library

Hobson Street Library

First Court deep energy retrofit

Area

Existing refurbished:

GF 243 m2 GIA

1F 249 m2 GIA Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <60kWh/m²

Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

The Bodley library is currently under renovation with a new roof being installed with new wood fibre insulation and improved air tightness membranes. Windows are being overhauled and heating systems reconfigured. However, we believe from the feedback to our initial ideas suggest that the Bodley library can form an important active part of the library provision, and should be brought back into daily use. While there are security systems that could allow the space to operate with the historic book collection in place, following discussion with the librarians and archivists that the best solution is for the space to be open, invigilated for set hours daily. This would impact library staffing levels and must be considered in the selection of the new working library site. The upper Bodley would be home to a new, slender study table that would take the place of the existing 18th century radiators, with seating spaces carefully staggered to provide sufficient working space while allowing readers to pass behind. The radiators would be replaced with concealed fan coil units located below windows at the perimeter of the room or underfloor heating should the structure allow, providing appropriate temperature control for an environment suited to both historic books and those studying, albeit at a slightly lower temperature than a normal working environment of 18-20 °C. The book bays are subtly signposted as inaccessible without prior arrangement. Christ’s College Cambridge

Output Report 2023

MICA

Study and Library Exhibitions entry (lift)

Archive research room Muniments room

Exhibition Archive store

Invigilator’s desk

Study tables transform to exhibit cases Library/study/exhibition

K Stair

New connection, stepped

Upper Bodley plan - proposed

Step free route Book stacks secured

Exhibitions entry (stairs)

STUDY & LIBRARY

Library Archive

Portrait Room

Senior Fellows’ Parlour K Stair

Supervision Rooms

Lower Bodley plan - proposed

The central table is designed so that outside of term it can be reconfigured as an exhibition display case for public access. The exhibition space would welcome visitors arriving at the top of the generous and ceremonial K staircases in an open, dedicated exhibition space in the former library office. Sliding glass doors would link to the library space, creating a larger and improved exhibition experience for the hundreds of members of the public who attend Christ’s exhibitions each year. Beyond the exhibition space, K4 set could be converted into an archive reading room which could equally be used as a library office This is connected to the Muniments room by a short flight of steps through an existing opening, creating vastly improved access to the historic collection. Larger volumes that currently crowd the muniments room would be moved to dedicated custom design storage to improve access and remove health and safety hazards. The ground floor reconfiguration will continue as planned, with the west-most room being retained as closed archive storage with the historic book stacks and reading furniture, with two supervision rooms added adjacent to the Portrait Room. The law library could be provided within the main working library, and the room stripped back to its original form, removing later additions of internal walls and shelving, offering a new opportunity adjacent to the Gatehouse. 40

Opportunity areas

Proposed exhibition display in underutilised space Christ’s College Cambridge

First Court

G L

K H

Bath Court

ST AN DR

RI H

’S

EW Possible study space in Bodley Library

Output Report 2023

MICA

Study and Library

STUDY & LIBRARY

Existing conditions - first floor

Existing site plan highlighting opportunity area Existing conditions - library corridor ground floor

Reprovide Working Library Fit for purpose on the existing footprint Summary Information Brief components: Open access stacks, reading rooms

Library office, circulation desk, group study

WCs, plant, circulation

Dependencies:

Temporary library required

Related projects: Bodley Library Bath Court

Kitchen and Upper Hall Improvements

Area

New build: 1050m2 GIA

Landscape: 190m2 (see Bath Court) Cost £ Embodied Carbon <350kgCO2/m2 (LETI target), 350t inc demo Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

This site identifies potential for a contemporary, quiet and contemplative new working library to compliment current and proposed study spaces in the College. A new library can offer a variety of light-filled and enjoyable spaces oriented towards views of historic and treasured College buildings, which meets much of the required brief for study space and book storage in one building above ground, and with a holistic environmental strategy to confidently meet the challenges of climate change. This is a strategy with judicious moves working hard to unlock step-free access to adjacent spaces, creating new social and outdoor areas, and addresses needs of the college for decades to come. A development for a four-storey building of about 1000m2, with carefully articulated façades onto both Christ’s Lane and the renewed Bath Court, and with a form which sits comfortably with adjacent buildings in College, especially the Bodley Library. The scheme is considered so as not to be visible and detract from local views from First Court, or views amongst the wider townscape, but offers intimate views of the First Court historic architecture and new views across the rooftops of Cambridge. The redevelopment of the site offers the opportunity to present a new positive façade to Christ’s Lane. This project is explained in full in the document 754-MICA-LI-ZZ-RP-A-00001 Feasibility Study: Working Library.

Christ’s College Cambridge

Green roof Library

Third floor

Second floor

First floor

Ground floor

Diagrammatic plan layouts for new Working Library

Output Report 2023

MICA

STUDY & LIBRARY

Study and Library

Indicative aerial view

KEY

1F bridge to Bodley

’S

1. New Working Library 2. New ‘Upper Hall Extension’ at first floor over kitchen fronting renewed Bath Court 3. Renewed Bath Court 4. Upper Library refurbishments 5. Upper Hall improvements

Construction

– Stone facade – Triple glazed windows (allow for

1 1F bridge to First Court

Scheuco windows/ curtainwall) approx 40% glazing – Standing seam zinc roof – Mass timber frame (glulam/ LVL with CLT infill) – Floor to floor heights: – C. 3.1m floor-to-floor GF-1F (aligned to First Court/ Bodley Upper Library) – C. 3.2m floor-to-floor above

3 2

Opened up link from First Court

New library on current working library site 44

Opportunity areas

Christ’s College Cambridge

First Court

G L

Bath Court

’S

ST AN DR EW ’S ST RE ET Indicative internal materiality and exposed timber construction - MICA Architects

Indicative internal materiality and exposed timber construction - MICA Architects

Output Report 2023

MICA

Study and Library

View of site from Hobson Street: mature lime trees

Existing site plan highlighting opportunity area View of site from second floor of Todd Building

Hobson Street New library Summary Information Brief components: Open access stacks, reading rooms

Library office, circulation desk, group study

WCs, plant, circulation

Option 2: admin building on same footprint

Option 3: accommodation on same footprint

Dependencies:

Related projects: Bodley Library Bath Court

Kitchen and Upper Hall Improvements

Area

New build: 1370m2 GIA

Landscape: 190m2

Design direction This site identifies potential for a four-storey building of about 1320m2, with carefully articulated façades onto Hobson Street, set back from the row of Lime Trees, and the newly created intimate Fifth and Sixth Courts. The form sits comfortably with adjacent buildings of Grade I listed Stevenson, Grade II listed P, Q and X staircases, and adjacent to Y Building. The roof offers new views across the rooftops to the wider townscape towards King’s College Chapel. The strategy makes judicious moves working hard to unlock step-free access to adjacent spaces, creating new social and outdoor areas, and addresses needs of the College for decades to come. This project is explained further in full in the document 754-MICA-HS-ZZ-RP-A-00001 Feasibility Study: Hobson Street.

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target), Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

Christ’s College Cambridge

Green roof Library Accommodation

Fourth floor

Third floor

Second floor

First floor

Ground floor

Output Report 2023

MICA

Study and Library

Roof terrace with views towards King’s College chapel and city centre

Yusuf Hamied Court

Stevenson

2 X

New stepfree links to Stevenson

3 BS BS

Opportunity areas

Sixth court landscaping

1 ET

New Working Library

Rooftop reading and event room

Roof terrace

Fellows or student accommodation Christ’s College Cambridge

Output Report 2023

P 12

Q GROUND FLOOR PLAN

P & Q SECOND FLOOR

P GROUND FLOOR PLAN

P 11

P KITCHEN

Q 10

Q11

Q 12

ET P4

N ST R E

SICK BAY

Q FIRST FLOOR

HOBSO

SURGERY

Q KITCHEN

X P6

P SECOND FLOOR

Fifth Court One lift unlocks two buildings

Sixth Court Y

MICA

GYP

P 10

Study and Library

View from second court, existing yew trees in foreground

Existing site plan highlighting opportunity area View of staircase C gable end from Christ’s Pieces

Staircase C extension The Nest Summary Information Brief components: Art studio, Multifaith room, Study space Flexible public room, Create new identity on Christ’s Pieces Dependencies:

Related projects: Working library Bath Court Area

New build: 1050m2 GIA

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <60 kWh/m² Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Design direction The prominence and extent of Christ’s College within the centre of Cambridge results in many views both in and out. The many paths of Christ’s Pieces converge at its southwest corner where the gable of staircase C is prominent. We have considered the opportunity to better respond to a city view with a potential a new intervention. The mutually beneficial changes offer the potential for visual improvements, new facilities, and a room with a view across the majestic avenues of the College’s namesake public park, providing a new connection for those within the College, and those without a glimpse into College activities on a previously blank end wall. This addition could house the artist’s studio on the top floor, benefiting from north light while maintaining privacy for staircase B in the Fellows’ Building, and enjoying spectacular views. The floor below could be considered for up to two new Fellows’ sets (replacing those displaced in other projects), while the ground floor could be used as an exhibition and/or study space, alongside space set aside for plant serving the new Ground Source Heat Pumps in Second Court and an accessible toilet. Staircase C was a later addition the 19th century range: staircase

Opportunity areas

Christ’s College Cambridge

Proposed Staircase C extension from Second Court

Output Report 2023

MICA

Study and Library

- Proposed Second - proposed

First - proposed

Ground - proposed

Wellbeing studio D and E were completed in 1825, and C was added in 1875, explaining the deviation from the otherwise logical symmetry of the original staircase arrangements. The fact that the north wall was left blank suggests that the architect left open the possibility of further extension towards the Fellows’ Building. Currently the site is occupied by two underused accessible public toilets and houses gas boilers, which will become redundant with the introduction of the proposed all-electric heating system. The new building would entail removal of an existing Taxus baccatta (common yew) tree, which may be assumed as a hedge planting that has overgrown without due attention. The two existing Robinia Pseudocacia would be retained and have further room for growth, with appropriate pruning to maintain views and light to both the Nest and the Fellows’ Building. This intervention has the potential to open-up step free access to staircase C with the addition of a lift, and with modifications to the corridors and ensuites of the staircases beyond, could also improve staircases D and E. The Upper Hall does not correspond to the levels of these staircases so would not benefit from improved access through this intervention. Should the multi faith room not be provided in Blyth, then this building was also provide a suitable home for spiritual pursuits in a central College location.

Opportunity areas

Christ’s College Cambridge

FELLOWS’ GARDEN

Fellows’ Building

CHRIST’S PIECES

B SECOND COURT Robinia Robinia

C D

’S

Art studio Multifaith room Study space Flexible public room Improve accessibility of C, D, E Create new identity on Christ’s Pieces

Opportunity to better utilise this prominent site creating new views into and out of the college Output Report 2023

MICA

Study and Library

Todd Building from Hobson Street

Existing site plan highlighting opportunity area Existing lower ground floor has good access to light and air

Todd Building Study Hub Summary Information

Design direction

Brief components: Supervision rooms

This intervention is simply a reallocation of room uses, considering the Todd Building lower ground floor as a study hub. Within this, a room could be allocated specifically for bye-fellows and Research Associates as a “hot desk” type arrangement in close proximity to rooms used for both supervisions and group study, making this a new study hub that compliments study environments provided by the library.

Research fellow shared study space Dependencies:

Related projects: Library

Deep energy retrofit

Area

Existing refurbished: 399 m2 GIA

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <60 non resi or kWh/m² Water use

<4.5l/person/day (non-resi)

Sustainability

Operational & embodied carbon, social

Opportunity areas

The addition of improved audio-visual equipment, or simply large format displays with HDMI connections for students, staff and fellows alike to display and share screens interactively could make these spaces come alive and foster a space of collaboration. The adjacent amenity room could retain its flexible booking system, but be appropriated as part of the study hub at times of intense study space need such as exam term.

Christ’s College Cambridge

Chapel Choir Music Store

Z 7a

Amenity Room

Z1&2

Z BASEMENT PLAN

Group study or supervision rooms

Informal breakout and social study

Amenity Room that could be converted during Easter term

Z 7b

Z Annex YUSUF HAMIED COURT

GYP

Z 21

Z 19

Z 17

HOB Z 10

Z 11

ST R EET

Z 22

Z 20

Z 18

Z 16

Z 12 Z 13

Z GROUND FLOOR PLAN

SON

Z 14 GYP

Z 15

Output Report 2023

MICA

Christ’s College Cambridge

Social & wellness 9

Output Report 2023

MICA

Social and wellness

Blyth overlooking Third Court

Existing site plan highlighting opportunity area Blyth overlooking the Fellows’ Garden

Blyth Building Student Hub Summary Information

Design Direction

Brief components: Cafe, servery, wellness suite

Blyth sits at a key intersection point between Second and Third Courts, a point where almost every member of the College passes through on a daily basis, making it a natural inflection point where impromptu conversations occur, serendipitous meetings take place and the worlds of the College intersect.

Prayer room, tutorial office

Interdependencies: Student room loss of 11 Related projects: Shared kitchens Blyth and Y

Deep energy retrofit

Area

Existing refurbished: 399m2 GIA

New build: 120m2 Landscape: c 150m2

Cost £ Carbon – embodied (350kgCO2/m2) Carbon – operational (<60kWh/m²/year) Water use

<4.5l/p/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

This location is proposed as a student hub, which encapsulates several key aspects of the space planning brief. A lightweight extended cafe captures views and adjacencies with the Fellows’ Garden, allowing it to be enjoyed year-round, and creating a link through the ground floor of the building between Third Court which functions well as an occupied outdoor room in the summer through to the garden. This site within the Fellows’ Garden has few mature trees and the footprint can be established while respecting existing landscape. A new outdoor covered area would be created so the garden can be enjoyed year-round.

Christ’s College Cambridge

Third Court

Output Report 2023

Blyth ground floor opened up

New pavilion

Fellows’ Garden

MICA

Social and wellness

Opening up bays in masonry walls : the Honourable Society of Lincoln’s Inn

Glazed spaces opening onto gardens : Dulwich Picture Gallery

Blyth Building Student Hub Blyth is a robust 20th century building with no historic listed status. Every second bay is structural, meaning it is straightforward to open up the central bay as an open plan servery and seating area. The flanking rooms can be re-appropriated for the tutorial office, a wellbeing hub including the nurses office and a sick bay, elevating preventative wellness practices to a part of daily life within the College. This site is also suitable for the prayer room being at the heart of College life, easy to pop in should your faith suggest frequent prayer throughout the day. This servery can function as a satellite kitchen for the numerous events that take place in the garden across the spring and summer. As demonstrated in the chapter on phasing, this new space can be used in a host of different ways to provide temporary homes for other displaced College activities including the library, Senior Common Room and Upper Hall.

The Builder, 1950 60

Opportunity areas

Christ’s College Cambridge

Fellows’ Garden

Prayer room

Improved WCs

Views and connection to nature and outdoor social and study space

Wellness hub

Pavilion

Café

Servery

Third Court

Wellness hub Third Court

Fellows’ Garden

yt Ke

Tutorial office

u ro ho

Proposed sectional perspective looking north through Blyth

e far gh

Output Report 2023

MICA

Social and wellness

62 Sketch view of pavilion opening onto Fellows’ Garden

Christ’s College Cambridge

Output Report 2023

MICA

Social and wellness

SOCIAL & WELLNESS

Bath Court south existing conditions

Existing site plan highlighting opportunity area Bath Court north section with external stair to library

Bath Court Indoor and outdoor socialising Summary Information

Design Direction

Brief components: Outdoor courtyard with planting

Many of the key objectives and principles of a masterplan converge at the key junction where the Hall, Upper Hall, Kitchen and Buttery meet. There are many issues here:

Covered seating, new link to Buttery

Dependencies:

Related projects: Working Library Kitchen Upper Hall

First Court deep energy retrofit

Area

Landscape: c 150m2

Cost £ Embodied Carbon <TBCkgCO2/m2 Operating energy Nil Water use

Irrigation from rainwater harvesting

Sustainability

Water use, biodiversity, social

Opportunity areas

– Upper Hall is inaccessible – Upper Hall is at capacity with further pressure coming from new occupants of Yusuf Hamied Court

– Historic buildings together with the kitchen are significant contributors to the overall College carbon footprint,

– The Buttery is very successful to the point of overcrowding – The kitchen is arguably over-used and could be potentially

improved in terms of goods-in internal flow and visibility from the Hall passage

These issues amount to a complimentary and liberating scheme for this constrained corner of Christ’s. With or without a change to the library, this new College courtyard provides a study and social courtyard, that opens out the Buttery through an existing historic opening in the Grade 1 listed fabric.

Christ’s College Cambridge

Output Report 2023

MICA

SOCIAL & WELLNESS

Social and wellness

Existing conditions on Bath Court

This proposal creates a new facade to the south elevation of the kitchen, creating a new entrance directly to a lift that brings users to Upper Hall without entering the working space of the kitchen. The same lift adds stops at the raised kitchen level, retaining its use for moving non-food items to Upper Hall. A further stop is added at the level of the Old Common Room, providing step-free access for the first time to this important public space at the heart of College with a slight adjustment to the stair landing. To accommodate this, the wash-up area of the kitchen is relocated to a more suitable position, immediately adjacent to the screens, again re-opening an historic doorway which has since been closed, restoring wash-up to its original location. This also allows the cold prep area to be expanded and the kitchen office relocated to enjoy proximity to the social courtyard. The operations director’s office would be relocated either to the administration hub or to a consolidated operations area within the ground floor of staircase D, where the existing staff toilets and changing would be rationalised to better serve their purpose.

The new facade flanks an extension to Upper Hall, creating a new seating area that overlooks the social courtyard, providing additional capacity and linking this important social space at the heart of College life to outdoor spaces, as the Upper Hall currently is almost invisible from the outdoor spaces of College: its only two windows at occupant level having been closed up as part of the 1960s renovation of the hall. For further information refer to Working Library Site Feasibility Study Report 754-MICA-LI-ZZ-RP-A-00001-P4

USES KEY Intervention in existing building New build library footprint New build accommodation footprint Circulation Event space

Opportunity areas

Christ’s College Cambridge

Indoor/ outdoor social spaces

Improved access to First Court

– New courtyard for outdoor study and socialising with

– Proposed bridge link to Bodley Upper Library at first

outdoor access from Buttery – Potential to cover portion of space for year-round access regardless of weather (fixed structural glass/ stainless steel canopies above first floor extending from New Working Library) – Hard standing with sustainable urban drainage – Rain garden planting to attenuate storm water – New areas of outdoor seating in shaded, intimate environments – Views to Upper Hall Extension as informal reading area/ cafe-style dining – New terrace to New Working Library second floor level facing Bodley – New terrace to New Working Library third floor level overlooking Bath Court with views across to First Court, Chapel bell tower, and wider Cambridge

Output Report 2023

floor from New Working Library

– Proposed bridge link to Darwin Room and Fellows’ Parlour at first floor from New Working Library

– Better visual sight-line from First Court through to Bath Court at Staircase G

MICA

Social and wellness

Existing space with potential for improvement

Existing site plan highlighting opportunity area Existing pitched roof intersects with E staircase gable end

Upper Hall Improved dining experience Summary Information Brief components: Lighting, new acoustic shaped acoustic Plaster ceiling

Remove drapes, replace furniture

Dependencies:

Temporary dining required

Related projects: Working library Bath Court Kitchens

Deep energy retrofit

Area

Existing refurbished:112 m2 GIA

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <35 (resi) <60 non resi or kWh/m² Water use

<75l (resi) or <4.5l/person/day (non-resi)

Sustainability

Operational & embodied carbon, social

Opportunity areas

Design Direction The Upper Hall is a strong element of the undergraduate experience in College but is a utilitarian space that does not live up to its full potential. Having carefully examined archive drawings from the 1950s and 60s renovation, we have ascertained that the historic trusses remain above the ceiling, and can be exposed by the removal of the existing acoustic tile ceiling to create a far more celebratory space. To retain positive acoustics in the space, acoustic plaster should be installed between the trusses, and improved lighting installed, concealed at the perimeter and celebrated in appropriately scaled architectural fixtures in the centre. During this process we have been unable to physically inspect this ceiling void but understand that the indicated void space and trusses are in place. By replacing the outdated and uncomfortable bench seating with individual chairs, this offers an improved dining experience and allows the space to be readily configured using the existing bespoke tables, which can be refinished. Removing unnecessary window treatments, lifting the colour of the existing wood panelling and floors will immediately create a more welcoming space. This–in combination with the works to Bath Court to resolve access issues–would create a social dining experience that is far more welcoming, and can be used for informal gatherings outside dining hours (recognising this as an important space to escape from study), to work this important asset to maximum capacity. Christ’s College Cambridge

Precedent image for revealing historic structure

0.3m Roof Build-up 2m To Ridge 26 Degrees

35 Degrees

4.34m To Existing Acoustic Soffit

Output Report 2023

Brick Gable To C,D & E 35 Degrees

1.9m To Ridge

MICA Image Produced From Dimensioned

Social and wellness

Existing condition

Existing site plan highlighting opportunity area Existing condition

Working Library Retrofit as new dining hall Summary Information

Design Direction

Brief components: Servery, bench seating

Should the existing working library site be deemed unsuitable for the new library, or for an administration hub, there is the opportunity to refit it as a new dining hall in an appropriately central College location immediately off First Court. The existing building benefits from immediate proximity to the existing kitchens, so the introduction of a new servery at the north end would make a conversion relatively straightforward.

Mezzanine Dependencies:

Library reprovided first

Y and Z Staircases

Upper Hall Related projects: Working Library Bath Court Kitchen

Deep energy retrofit

Area

Existing refurbished: 678 m2 GIA

Cost £ Embodied Carbon <TBCkgCO2/m2 Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

We understand the upper floor to be structurally integral to the building as a whole, but would recommend cutting voids to create a light-filled and generous ground floor, with the introduction of a second staircase to facilitate movement between the two spaces. It was interesting our archival research to uncover mid-20th century plans for other student dining on ground level in Second Court and there is a strong case to be made for bringing all dining to ground level to minimise access constraints and activate this courtyard opposite the Buttery. The space made available above the kitchen could be returned to (presumably) its original use as two floors of student bedrooms, as the original window configuration suggests.

Christ’s College Cambridge

Archival section of existing library

Mezzanine dining

KEY Study Space

First Floor

Service Space Fellow Room Student Room Kitchens Administration Events Shared WC Retail

Ground Floor

Proposed plans Output Report 2023

MICA

Social and wellness

Existing conditions along east boundary wall

Existing site plan highlighting opportunity area Existing conditions pool looking towards listed pool house

Fellows’ Garden Garden Pavilion Summary Information

Design Direction

Brief components: Tea room, Lockers, Greenhouse,

The Fellows’ Garden offers a wonderful respite from College activities, but equally when the weather is fine, an informal place to study and gather. The pool in particular is a popular place for tutor’s teas and gatherings in the Easter Term, when the pool is open for bathing.

Consolidated storage Dependencies:

Related projects: Staircase C Extension

Blythe Student Hub

Area

New Build: c 240m2

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <60 kWh/m² Water use

<4.5l/person/day

Sustainability

Operational embodied carbon, Social

Opportunity areas

We propose that the garden be improved through the judicious introduction of year-round spaces for enjoying the garden environment. Given that the College has taken the unusual step of making the gardens open to all, the College members could have the opportunity to enjoy them year-round and linger in spaces that offer the mental health benefits of biophilia, whether in outdoor covered spaces, or indoor spaces with expansive garden views. This proposed wellness hub overlooking the pool offers space to contemplate water from indoors or undercover. The flexible room can be used for social events, group study, but also wellness specific activities including yoga, meditation, sound baths, music practice or performance, and dance, The same facility include toilets and showers, both for those using the pool (preventing contamination of the water which requires higher chemical concentrations to resolve) but also to encourage active travel and provide the gardeners with suitable welfare facilities for their labour intensive occupation. Christ’s College Cambridge

Gardener covered working zone

Wellness Studio

Double Pitched Greenhouse

Toilets Shower Head

gardener Tea room

Store

Alongside this sits improved facilities for the gardeners, replacing the accumulation of uninsulated, largely unplanned garden structures, creating a larger greenhouse that takes advantage of the south facing thermal mass of the existing listed wall for optimal growing conditions, and creating covered working areas for the gardeners, as well as consolidated storage, a head gardener’s office, tea break room and lockers for the garden team: providing care for those who care for the College’s natural environment, which in turn creates a nurturing environment for all College members. These ideas are supported by the gardening team.

Output Report 2023

MICA

Social and wellness

Proposed wildflower meadow precedent at King’s College

Existing site plan highlighting opportunity area Existing monoculture of amenity grassland

Lawns to meadows Visible Biodiversity Commitment Summary Information

Design Direction

Brief components: Replant lawn with wildflower meadow

The College has an incredible diversity of plants within the decorative borders, from the impressive wisteria in First Court to the productive vegetable garden-scape in Second Court to the spectacular iris displays in Third Court. However, the lawns in the centre of these spaces remain traditional amenity grass, with little biodiversity value. While these are an important part of the traditional impression of a Cambridge Court, they are arguably unsustainable, reduce biodiversity and require significant summer irrigation, petrol mowing and require significant manpower to maintain.

Mown once/year Dependencies:

Temporary kitchen

Related projects: Kitchen

Construction compound for adjacent projects

Area

Second Court - 756m2

Option: First Court - Approx 500m2

Option: Fellows’ Garden - 9234m2

Cost £ Embodied Carbon Negative Operating energy Negative Water use

TBC - none

Sustainability

Ecology, Wellbeing

Opportunity areas

An alternative could be to replace some areas with cultivated wildflower meadows: these offer significant biodiversity gains, and improved stormwater retention, the importance of which is discussed in the Net Zero chapter. When properly planned and established, they are low maintenance, although we would recommend a mowed border and occasional path to create a sufficiently tidy appearance in this constrained College setting. Second Court could be a modern take on a rose garden, with repeat flowering wild shrub roses taking their natural form amongst long grass meadows, with seating areas to encourage people to sit and study or recuperate.

Christ’s College Cambridge

Christ’s College Opportunity Cambridge Areas

Fellows’ Garden

Proposed wildflower planting in Second Court

Add boundary

The Second Court is an important part of the College celebrations in spring with the need for the marquee to support outdoor activities in the Fellows’ Garden. This function might be fulfilled by the Blyth Pavilion, but if not, wildflowers set seed in early June so can be cut in mid-June if required. While we have focussed on Second Court in this description, the premise could equally be applied to First Court, particularly following the upheaval of the GSHP installation. The Fellows’ Garden can also significantly improve biodiversity: there are currently over 100 Yew trees, some of which are specimens or variegated cultivars which catch the winter light. But a vast majority of them appear to be just hedging that grew out of hand without planning. Yews create unfavourable conditions in the ground below them and become a monoculture. If 75% of those yews were replaced with varied deciduous species there would be room for far more under-planting of shrubs and woodland species increasing biodiversity.

Output Report 2023

Second Court

First Court

MICA

Opportunity areas

Christ’s College Cambridge

Consolidate operations

Output Report 2023

MICA

Operations Consolidation

Existing Porter’s space is inefficiently laid out

Existing site plan highlighting opportunity area Existing Head Porter’s office is a thoroughfare to teapoint

Porters’ Lodge A welcoming arrival Summary Information

Design Direction

Brief components: New welcome desk, seating area, tea room

The Porters’ are not only the first face of the College to greet those arriving but they are a critical part of the pastoral chain that cares for the student population, often providing a critical link between a student in need to the support offered by tutors, but also simply providing cup of tea and a listening ear late at night.

Head porter’s office, toilet, lockers, shower

Dependencies:

Student room size reduction N1

Related projects: First Court deep energy retrofit Area

Existing refurbished: 107 m2 GIA

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operational energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

In contrast to this, their current working environment seems to have created over several decades to an inaccessible and awkward assembly of spaces. This could be vastly improved as part of the next phase of works taking over the space of the under-utilised women’s toilet and turning the adjacent men’s into a gender-neutral accessible toilet and shower gives appropriate welfare to the 24-hour Porters’ role, while creating a new route with the Lodge accessible from within staircase M.

Christ’s College Cambridge

Proposed visual of new Porters’ Lodge

A generous dedicated waiting area could then be created at the main entrance, and a through flow eases congestion between College members collecting post and visitors arriving. The new desk is ideally located to passively surveil the entrance without the need for barriers, and the Head Porter remains at the heart of operations but is no longer a thoroughfare to the teapoint. Expanded teapoint and lockers are created, and a separate room for large post and luggage is created, potentially negating the need for a separate parcel zone at the North lodge, reducing the strain on resources. This can be re-appropriated for luggage outside term time when deliveries are fewer, but guests are more frequent. The original mediaeval fabric of the ceiling and stone form of Staircase L can be revealed, with services re-routed as required, while maintaining the incoming comms line within the new archway marking the transition between reception and pigeon-holes.

Output Report 2023

Proposed arrangement option

MICA

CONSOLIDATED OPERATIONS

Operations Consolidation

Proposed Option 1

Proposed Option 2

Opportunity areas

Christ’s College Cambridge

HOBSON S

Chapel carpark

TREET O

First Court

G L

ST AN D

RE W ’S ST

RE ET

Output Report 2023

MICA

Operations Consolidation

CONSOLIDATED OPERATIONS

Central Kitchen Electrify and improve Summary Information Brief components: Electrify existing kitchen Relocate wash-up

Consolidate staff welfare and offices

Dependencies:

Temporary kitchen required

Related projects: 3 Working library

4 Bath Court

6 Upper Hall

Deep energy retrofit

Area

Existing refurbished:364 m2 GIA

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <35 (resi) <60 non resi or kWh/m² Water use

<75l (resi) or <4.5l/person/day (non-resi)

Sustainability

Operational & embodied carbon, social

Opportunity areas

Design Direction The existing kitchen was refitted in 2007, so it is reaching the end of its anticipated lifespan (15 years is typical for an intensively serviced and active kitchen). Furthermore, it is gas powered and electrifying it will be a significant positive step towards carbon neutrality and will reduce the ventilation required to service the space, as induction cooking generates lower radiant heat, and poses less health and safety risks. The reason for reconfiguring the wash-up is explained in the Bath Court project, but this brings the additional positive of removing the direct sight-line from Building F. Further options can be explored for re-orienting the kitchen to a north-south counter alignment to improve access to the newly expanded pass suggested in this layout. The kitchen is currently understood to be operating at close to capacity so any reduction in its size will impact on operations due to the large number of events and meals catered simultaneously. The storage below the kitchen is ample and under-used but poorly connected to the kitchen with only a goods lift linking directly and a stair remotely located through the Buttery bar. Space could be made available by appropriating underused bin store area for cold or frozen food storage (and moving goods-in further north on Christ’s Lane), freeing up additional space in the

Christ’s College Cambridge

Second Court

Temporary kitchen

Proposed relocated kitchen wash-up

1 OCR (above) F

First Court

Existing kitchen converted to electric

Buttery G

3 Staff offices and welfare consolidated and improved

Bath Court H

E N

’S

Working Library

ST RE ET

Bodley Library

Staff offices and welfare consolidated and improved within footprint of exiting showers, toilets, locker rooms and refuse

Moving kitchen wash-up for new Foyer and level access via replaced lift to Upper Hall and OCR (project 6)

Existing office removed and replaced with expanded pass

kitchen itself. The new library on the Working Library site occupies some of the footprint of basement kitchen storage, while the Bath Court proposal necessitates the relocation of wash-up. If either of these proposals are implemented, it will be essential to reconfigure the kitchen. As the kitchen is located directly below the Upper Hall it is logical to carry out both renovation projects simultaneously as the construction zones and disturbance are likely to impact one another, but this creates a very significant impact to College operations, as unpacked in the Phasing chapter.

Output Report 2023

MICA

Operations Consolidation

Working Library Retrofit existing building as administration hub Summary Information

Design Direction

Brief components: Ground floor breakout, meeting rooms

Should the library site be selected as Hobson Street, the existing working library will be available for retrofit. While there has been discussion that the existing structure has the capacity to handle an extra storey on the 1976 foundations, our review of the archival architectural drawings which indicatively show ground beams does not suggest that is the case, and typically 1970s structures are not built with large redundancies that might accept additional storey loads.

First floor open plan offices

Dependencies:

Library reprovided first

Y and Z Staircases

6 Upper Hall

Related projects: 3A Working Library

4 Bath Court

5 Kitchen

Deep energy retrofit

Area

Existing refurbished: 682m2 GIA

Cost £ Embodied Carbon <TBCkgCO2/m2 Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

We believe that there is a strong case to be made for the judicious retention of the existing building, retrofitting it for new use: in this case an administrative hub. The current configuration deviates a significant amount of space to underutilised toilets and inefficient staff spaces, a prayer room which will be relocated and unrelated storage. The ground floor can be reconfigured as a series of meeting rooms, video call booths, staff welfare including toilets, showers and lockers to promote active travel. The upper floor can be reconfigured into a series of small and large shared office with some open breakout space to foster collaboration and enhance synergies between departments. We anticipate that the majority of administration currently housed in V, Y and Z could be relocated to this location, with the possible exception of the admissions team which may be better served elsewhere. Christ’s College Cambridge

Existing section showing structural arrangement

First floor: existing plan. Remove all books, reading tables, internal partitions, mechanical, electrical. Refit all services to suit new configuration as open plan administrative offices. Replace all glazing with double-glazing

The whole building will require a full retrofit as detailed in the Renovation Schedule, but the roof and mechanical services were relatively recently replaced in 2020, so should have a working life of at least another 20 years, making the building useful until 2045 with glazing improvements and interior reconfiguration. Output Report 2023

Ground floor: existing plan. Remove all books, reading tables, internal partitions, mechanical, electrical. Refit all services to suit new configuration with added shower, reconfigured toilets, large and small meeting rooms, break room including tea point.

MICA

Operations Consolidation

View of site from Hobson Street: mature lime trees

View of site from second floor of Todd Building

Hobson Street Operations Hub Summary Information

Design Direction

Brief components: Open plan desk seating, closed offices,

For full information see Hobson Street Library Feasibility Study Report 754-MICA-HS-ZZ-RP-A-00001-P3

Meeting rooms, tea points, breakout area

WCs, showers, plant, circulation

Dependencies:

Related projects: Bodley Library Bath Court Area

New build: 1370m2 GIA

Landscape: 190m2 Cost £ Embodied Carbon <350kgCO2/m2 (LETI target), Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Operational & embodied carbon, social

Opportunity areas

Should the Hobson Street site not be selected for a new library site it would be an ideal candidate for a consolidated operations hub, easily accommodating all of the administrative functions from V, Y and Z, as well as having capacity for the housekeeping staff and their welfare hub and providing a suitably welcoming “front door” for the admissions team to receive prospective applicants, and the development team to receive potential donors. The ground floor can provide a flexible event space in the same way that the proposed library plans do, while upper floors can be a mixture of large and small office spaces interspersed with informal breakout spaces and collaborative meeting rooms. As the administrative functions are unlikely to fill the anticipated envelope of 1300m2, there is capacity to consider student accommodation across the upper floors, while still maintaining the rooftop room on the fourth floor facing Hobson Street and capturing the views across central Cambridge.

Christ’s College Cambridge

Output Report 2023

P GROUND FLOOR PLAN

P 11

P KITCHEN

P 12

Q GROUND FLOOR PLAN

P & Q SECOND FLOOR

Q 10

Q11

Q 12

STREET

SICK BAY

Q FIRST FLOOR

HOBSON

SURGERY

Q KITCHEN

Fifth Court P SECOND FLOOR

GYP

P 10

Yusuf Hamied Court

Z 5

Darwin Garden

X One lift unlocks two to four buildings

R S T

Sixth Court V

P Y

Third Court

MICA

Operations Consolidation

Photos of existing conditions

Interior of Butler’s Pantry

Photos of existing conditions

Entry to Butler’s Pantry viewed from Second Court

Octagon Servery, Butler’s Pantry Optimise servicing capacity Summary Information

Design Direction

Brief components: Servery with flexible bain marie/hot pass

The 20th century building adjacent to Hall and Second Court serves as an entry to the Senior Common Room, as well as providing cloakrooms and toilets to those using the SCR. The building has the potential for improved use, and in particular the Butler’s Pantry is cramped and unsuitable as a serving space, despite its ideal location relative to high table and the SCR.

Flexible events room

New openings in Listed fabric

Two new dining tables

Dependencies:

Related projects: 5 - Kitchen

Deep energy retrofit

Area

Existing refurbished:

109m2 ground

109m2 basement

New build extension:

90m2

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Carbon, Wellness

Opportunity areas

While the building could be improved and offer a new face to Second Court, we believe that the opportunity is less significant than those offered elsewhere and therefore simply recommend that the interior of the Butler’s Pantry is reconfigured for a more streamlined serving experience, with the silver and gold safes being relocated to a basement storage location below the kitchen as they are infrequently accessed. This would allow hot serving to the SCR to be more efficient, and provide improvements to the Hall serving, particularly in periods when the main kitchen is under renovation. A small basement below this building houses incoming gas which will be made redundant by the renewable energy strategy. The Octagon may form the plant room for the Master’s Garden GSHP, requiring some reconfiguration of the existing plant or possibly cloakrooms if the basement capacity is exceeded or ladder access is too constrained

Christ’s College Cambridge

Second Court Master’s Garden

WCs C

D O

Hall

First Court

G L

K H Output Report 2023

MICA

Operations Consolidation

Existing front of house repurposed as parcel storage

Existing back of house teapoint

North Lodge Staff Hub Housing office and break room Summary Information

Design Direction

Brief components: Refurbish lodge as conference and housing

The north lodge is currently little used throughout the College calendar, with the exception of the bi-annual College Ball, when it becomes the security hub. The front of house area has been repurposed for parcel storage which is understood to be well used during term. However, with additional storage being provided at the St Andrew’s Street lodge, this may become redundant.

Dedicated cleaners’ break room

Shower, lockers and WC

Dependencies:

1 Porters’ Lodge

Related projects: Deep energy retrofit Area

Existing refurbished: 65m2 GIA

Cost £ Embodied Carbon <TBCkgCO2/m2 (LETI target) Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Wellbeing

Opportunity areas

The back of house area is recommended to be reconfigured and to provide a permanent welfare home for the cleaning staff, with appropriate changing facilities, shower and lockers to provide end of journey facilities to encourage active travel, ideally commandeering the external bays immediately to the south to improve the space available to this backbone element of the College facilities. This area of the College will become significantly busier due to the Yusuf Hamied Court being in full flow from the 2023/24 academic year, so the front of house areas could be reconfigured as a maintenance and housekeeping “front desk” to address queries, particularly at the beginning of the academic year.

Christ’s College Cambridge

KING STREET

Yusuf Hamied Court 1

Darwin Garden

T V

Third Court Blyth

Output Report 2023

MICA

Christ’s College Cambridge

Renovate & Improve

Output Report 2023

MICA

Renovate & Improve

An holistic approach As part of the ongoing renovations of the whole College that are carried out on a rolling basis, we recommend that the building fabric is improved to reduce the energy demand for heating as far as possible, such the buildings can be re-provided with low temperature hot water from renewable sources.

Typically, we have proposed a natural insulation material such as wood fibre insulation, rather than a higher performing polyisocyanurate for a number of reasons. Natural materials are preferable because they: – Are inherently breathable, allowing moisture to move through them towards the outer leaf of the building, preventing the unwanted build-up of moisture which could lead to condensation and mould, while maintaining a consistent airtightness line through internal plaster finish. – Have lower global warming potential as they are not made of petrochemical by-products. – Are typically less flammable. The buildings in question are typically below 18m, so non-combustible construction is not essential for Building Regulation performance, but nevertheless low combustibility is always preferable, especially for sleeping accommodation. We have proposed typical internal wall insulation of 50mm, and roof insulation of 270mm, as these are good practice standards, and we have found that greater than these have diminishing returns on performance when weighed against the loss of gross internal area, but detailed energy model studies should be undertaken building by building as the final scope of works is confirmed. Detailing should be carefully designed to minimise cold bridges at interfaces, and ensure good air tightness lines. For each building we have introduced a proposed ventilation strategy which is essential to mitigate against moisture build-up in addition to the specification of natural materials. This is detailed in full in the Renovation Schedule. Ideally, each building should have supply and extract mechanical ventilation with heat recovery (MVHR), but this is not always practical in heritage installations. At a minimum, continuous background ventilation must be provided in any building that is being renovated. Where no supply ventilation is included in the building, trickle vents within windows are essential to provide supply air and balance the ventilation system to prevent condensation which leads to damp and mould, and also ensure good indoor air quality.

Opportunity areas

Order of Cost Estimate 19th September 2023

MAPPING CHRIST'S FUTURE Christ's College

Christs College - Masterplan Section 2.1 - Renovation Schedule Costed Proposals Ref

Project

2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14

Blyth Building C, D & E Wing Fellows Building First Court Lasdun Building Library Masters Lodge P&Q Building Staircase 04 building Stevenson Building X Building Y Building Todd Building Z Annex Building

Construction Cost Estimate £1,480,000 £521,000 £1,090,000 £3,380,000 £690,000 £1,350,000 £870,000 £510,000 £2,020,000 £1,420,000 £560,000 £1,530,000 £2,700,000 £820,000

Project Cost Estimate £2,240,000 £1,000,000 £1,650,000 £5,110,000 £1,040,000 £2,040,000 £1,320,000 £770,000 £3,050,000 £2,150,000 £850,000 £2,310,000 £4,080,000 £1,240,000

* Some of the projects listed above include for new standing seam or slate roofs. These projects could be considered as more than simply thermal upgrades, and may already be part of the College's ongoing maintenance programme of work. This would need to be discussed with the College to determine if these costs are already considered part of planned future expenditure.

Project Total

28,850,000

Christs College - Masterplan Section 2.3 - Photovoltaic Interventions Ref

Project

3.1 3.2 3.3 3.4 3.5 3.6 3.7

Y Building Blythe Building Chapel Building Main Hall Kitchen and stairs C,D & E Bodley Library Working Library Project Total

Library/study

Construction Cost Estimate

Project Cost Estimate

100,000 100,000 40,000 40,000 70,000 70,000 50,000

150,000 150,000 60,000 60,000 110,000 110,000 80,000 720,000

Page 6

Operations

Social/wellness Accommodation Fellows rooms

Christ’s College Cambridge

Z Annex Yusuf Hamied Court

Todd

1 Lasdun

Darwin Garden

Stevenson

Fellows’ Garden

Y Q

Third Court

Blyth

Fellows’ Building

Second Court

Master’s Lodge

O E N F

First Court

G L K

H I

Output Report 2023

Library

MICA

Renovate & Improve 754 Christ's College, Cambridge 754-MICA-ZZ-ZZ_SH-A-50500

Renovation Schedule

REVISION - P1 - STAGE 0 31/8/23 Revision - P2 STAGE 0 7/9/23

Existing Gross Internal Area (sqm) Building Fabric Building

Total GIA (sqm)

Number Walls of floors

BB - Blyth Building

1672

50mm rockwool internally

Replace with triple glazing with trickle 270mm rockwool below new standing seam roof with PVs vents

CD - C,D & E Wing*

974

50mm rockwool internally

FB - Fellows Building

1065

FC - First Court**

3400

LB - Lasdun Building

3880

LI - Library

Air Tightness

Ventilation

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Add continuou extract ventila new risers

Replace with heritage double glazing with trickle vents

Target 5: improve with taped Assume already insulated: add 100mm interfaces to new windows rockwool and new plasterboard lining

Add continuou extract ventila new risers. Fo 13B new MVHR

Replace with double glazing/add secondary glazing

270mm rockwool below new slate (TBC) roof. 100mm on dormers

Add secondary glazing

East: assume already insulated. West: Target 10: improve with taped Add continuou extract ventila 270mm typically rockwool below new interfaces to new windows slate (TBC) roof. 100mm on dormers and repaired plaster linings new risers

50mm rockwool internally

50% of existing windows obscured with new internal wall, 150mm rockwool 50mm rockwool insulation internally insulation

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Existing backg ventilation thr

50mm rockwool internally

Replace all single glazed curtainwall and windows with triple-glazed

Target 5 with façade improvements

New air handli suit change of admin/dining h

50mm rockwool internally

Replace all single glazed windows with Assume already insulated triple-glazed with trickle vents

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Introduce MVH

50mm rockwool internally

Replace all single glazed windows with Assume already insulated triple-glazed with trickle vents

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Add continuou extract ventila new risers

Windows

Roof

270mm rockwool below new standing seam roof with PVs

Target 10: improve with taped Add continuou interfaces to new windows extract ventila and repaired plaster linings new risers

ML - Masters Lodge

706

PQ - P & Q Building

608

PH - Pool House

SB - Staircase 04 Building

3101

50mm Rockwool internally

Replace with triple glazing with trickle vents

200mm insulation below existing insulation

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Add continuou extract ventila new risers

ST - Stevenson Building

1765

50mm rockwool internally

Replace with heritage double glazing with trickle vents

Target 5: improve with taped Assume already insulated: add 100mm interfaces to new windows rockwool and new plasterboard lining

Add continuou extract ventila new risers

WS - Workshop Building

213

Assume already insulated

X- X building

247

50mm rockwool internally

Replace all single glazed windows with 270mm typically rockwool below new heritage triple-glazed with trickle slate roof vents

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Add continuou extract ventila new risers

Y - Y Building

1672

50mm rockwool internally

Replace with triple glazing with trickle 270mm rockwool below new standing seam roof with PVs vents

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Add continuou extract ventila new risers. Fo 13B new MVHR

YH - Yusuf Hamied Court

3660

Z - Todd Building

2012

50mm rockwool internally

Replace with heritage triple glazing with trickle vents

270mm rockwool below new standing Target 5: improve with taped seam roof above public hall. New interfaces to new windows 270mm XPS flat roof with PVs to East and new plasterboard lining and West wings

Add continuou extract ventila new risers

ZA - Z Annex Building

629

50mm rockwool internally

Replace with triple glazing

270mm typically rockwool below new slate roof

Target 5: improve with taped interfaces to new windows and new plasterboard lining

Add continuou extract ventila new risers

Total

10991

[668]

[313]

Notes - All figures in square metres - GIA based on RCIS Code of Measuring - Existing area measurements estimated based on building drawings provided by Christs College * C, D & E Wing Includes adjacent plant building ** First Court Area includes kitchens and upper hall but does not include areas devoted to the masters lodge

Opportunity areas

Christ’s College Cambridge

Ventilation

ith taped ndows rd lining

Add continuous background extract ventilation through new risers

ith taped ndows rd lining

Add continuous background extract ventilation through new risers. For intervention 13B new MVHR

Comments

with taped Add continuous background ndows extract ventilation through r linings new risers

ith taped ndows rd lining

Existing background extract ventilation through ensuites New air handling system to suit change of use to admin/dining hall

ith taped ndows rd lining

Introduce MVHR

ith taped ndows rd lining

Add continuous background extract ventilation through new risers

ith taped ndows rd lining

Add continuous background extract ventilation through new risers

ith taped ndows rd lining

Add continuous background extract ventilation through new risers

ith taped ndows rd lining

Add continuous background extract ventilation through new risers

ith taped ndows rd lining

Add continuous background extract ventilation through new risers. For intervention 13B new MVHR

ith taped ndows rd lining

Add continuous background extract ventilation through new risers

ith taped ndows rd lining

Add continuous background extract ventilation through new risers

Output Report 2023

MICA

Renovate & Improve

Photos of existing conditions

Existing conditions

Photos of existing conditions

Existing conditions

Fellows’ Building Improve and restore Summary Information

Design Direction

Brief components: Remove unnecessary additions in stairs

The Fellows’ Building is in urgent need of repair due to a long period of deferred maintenance, possibly as long as 60 years as evidenced by the heating and electrical systems. The building has accreted layers of ad-hoc interventions, particularly within staircases and the back of house bedrooms, gyp rooms and unusual “Jack and Jill” shared bathroom situations/escape routes at the interface of A and B staircases above the passageway.

Reconfigure and refurbish bathrooms and gyp rooms

One ground floor room repurposed as group study

Dependencies:

Related projects: Deep energy retrofit Area

Existing refurbished: 1065m2 GIA

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <35 (resi) kWh/m² Water use

<4.5l/person/day

Sustainability

Carbon, Wellness

Opportunity areas

Harnessing the benefits of the new concealed systems we propose to strip away all interventions from the 19th and 20th century, install discreet glazed doors to the ground floor entrances to improve security, thermal performance and deter pests . Alongside contemporary fire and smoke detection systems, this should allow vestibules and partitions within stair landings to be stripped away, while maintaining intimate waiting areas for students meeting tutors. Occupancy of this narrow building is low, and escape distances between the rooms and stairs are short so the fire escape concerns can be mitigated through a fire engineered approach. Interventions to improve the building fabric are covered in the Renovation Schedule, and beyond this, the rooms would remain in their glorious state, a reminder of the stately conditions that were first designed for students and Fellow Commoners. Christ’s College Cambridge

Output Report 2023

MICA

Renovate & Improve

Existing condition

First Court Rooms Optimise uses and accessibility Summary Information

Design Direction

Brief components: Improve access (platform lift)

The First Court of Christ’s is considered by alumni to be the most significant space of the College along with the gatehouse on St Andrew’s Street. Spaces on this important, historic courtyard are rightly prized and should be used to their maximum capacity. We have uncovered certain aspects that are perhaps not used to their fullest capacity:

Light touch refurbish

Dependencies:

Master’s Lodge reduced by 3 bedrooms

Related projects: Deep energy retrofit Area

Existing refurbished:

1F: 150m2 GIA

2F; 128m2 GIA Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <60kWh/m² Water use

<4.5l/person/day

Sustainability

Carbon, Wellness

100

Opportunity areas

The Senior Fellows Parlour is a fantastic resource for Life and Emeritus fellows who otherwise do not have a study within the College. However, evidence from the access control systems suggests that this room is frequented by 2-4 individuals on a typical day, with exceptional days hosting five. This number would comfortably be accommodated in a smaller but equally prestigious space, such as the space vacated by the Law Library (re-provided in the new library). The new Senior Fellows Parlour could serve a dual purpose alongside the Portrait Room with being available for evening or weekend lettings should the fellowship decide the two uses can coexist harmoniously.

Christ’s College Cambridge

Master’s lodge

Senior Fellows’ Parlour Law Library

The space vacated by the Senior Fellows Parlour could be used to give an additional type of social space to the undergraduate community closer to the heart of College, and with more historical character than the existing, largely unfurnished JCR room that appears to be underutilised and unloved. The new space would offer a social study environment similar to the Buttery but without the commercial element, making it open to all, whether to eat a supermarket sandwich or enjoy a board game with friends. Master’s Lodge: while the ground floor is actively used on a day-to-day basis primarily by the Master but also by many members of the College enjoying the SCR, the upper floors are less frequented. The first floor series of reception rooms are used to welcome important guests and members of the College. In this historic setting it is very unlikely that a lift can be added, and as such there is little case to be made for re-purposing those rooms. The second floor contains a series of bedrooms, which might be used more widely by College Fellows guests, given the scarcity otherwise of guest rooms, and the provision elsewhere of accessible ground floor rooms. Alternatively, they could be considered for additional Fellows Sets, although this would compromise the privacy offered by the Master’s Lodgings. Illustrations from Country Life Magazine, 1906 Output Report 2023

MICA 101

Renovate & Improve

Photos of existing conditions

Existing south lobby: low ceilings, poor lighting, hard surfaces

Photos of existing conditions

Existing north lobby: deeply recessed into the facade, inactive

Yusuf Hamied Court Improved entry sequences Summary Information

Design Direction

Brief components: West lobby - raise ceiling by 1.5m, add

The conference facilities and theatre in Yusuf Hamied Centre are well used and relatively recently renovated with temperature-controlled air supply. The theatre is used both in and out of term time, and the JCR and TV room provide important supporting spaces in conference mode. The MCR is maintained as post-graduate student social space year-round due to the consistent nature of PhDs and Masters courses.

acoustic finishes, increase skylight, improve lighting, add furniture and green wall

East lobby - extend by 2m, add built-in furniture to new lobby area, outdoor furniture below new canopy

Dependencies:

Lecture theatre availability

Related projects: Deep energy retrofit Area:

Existing refurbished 40m2 (west) 65m2 (east) New build: c. 20m2

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <60 kWh/m² Water use

<4.5l/person/day

Sustainability

Carbon, Wellness

102

Opportunity areas

The rooms on the lower floors still function well, although they are less in demand. The squash court is apparently one of the last remaining across the Colleges, so is recommended to be retained, with the gallery space restored as viewing area rather than be appropriated as storage. The music room still plays a role for private rehearsal alongside the more public music room in the Yusuf Hamied Court. However, the lobby spaces that serve the lecture theatre, MCR, JCR, TV room and New Court Seminar Room are light filled and open directly onto pleasant outdoor spaces but are uninviting spaces to linger with poor acoustics. These could be improved as follows:

Christ’s College Cambridge

Christ’s College Opportunity Cambridge Areas

Improved lobby Extended interior Canopy

Improved lobby

Raised ceiling Informal furniture Canopy

South lobby: raise the roof, increase the size of the skylight, add acoustic ceiling finishes to soften the very live space, and replace the doors with glazed leaf to create greater transparency and allow more communication between rooms. Adding informal seating areas and indoor planting will generate a pleasant place to linger in small groups, complementing the activities within the named rooms. To generate more shaded outdoor space to complement the garden immediately outside, add a canopy to the entry, creating space to linger and enjoy outdoors as part of the Yusuf Hamied Centre

Output Report 2023

North Lobby: the lobby is an interface between student rooms on ground floor, maintenance access to the Lasdun undercroft, and the emergency escape from the lecture theatre. By removing or reversing the automatic openers to the undercroft doors, the service route aspect can played down. The facade is currently recessed deep into the volume of the building. By bringing it forward the lobby space is made more generous, sufficient to accommodate built-in seating and informal social study space against the glazing, allowing the space to operate as a secondary foyer to the lecture theatre. A deep canopy again creates shaded and protected outdoor space, while minimising solar gains that lead to overheating.

MICA 103

Renovate & Improve

Photos of existing conditions

Existing Plumb auditorium set up for study overflow

Photos of existing conditions

Sosnow Room as study breakout space

Plumb Auditorium Refurbishment Catering Hub Summary Information Brief components: Refurbish former council chambers

Add catering kitchen regeneration ovens

Dependencies:

Conference impact

Related projects: Deep energy retrofit Area

Existing refurbished: NIA 154m2 Plumb, 35m2

Sosnow, 23m2 kitchen

New build pavilion: 120m2 Landscape: c 150m2

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <35 (resi) <60 non resi or kWh/m² Water use

<75l (resi) or <4.5l/person/day (non-resi)

Sustainability

104

Opportunity areas

Design Direction This former council chamber is a unique room within the College and doesn’t serve a natural purpose as part of the traditional College model of Chapel/Hall/Library. In the past it has been the centre of Governing Body, but with the new Yusuf Hamied Court seminar rooms now potentially fulfilling that purpose it is less central to College life. The conference team has achieved a licence for civil marriage ceremonies, and it remains popular for conference and outside events, so this space planning exercise identifies the best use as making the most of this as event space. Interior decoration with an alternative colour palette, improved lighting including decorative pennants of a suitable scale, acoustic treatments to wall panels and ceiling will allow the original floor (presumably parquet or terrazzo) to be revealed and generate an elegant civic environment suitable to more formal events at a higher premium. Alongside this, the small kitchen south of Sosnow could be improved to a satellite kitchen with regeneration ovens to allow a higher calibre of catering to be provided to this space. The menu on offer would need to be carefully considered to work with the constraints of the space, with Sosnow in service as a plating area for formal dinners. This would require evaluation of the catering staff to ensure no negative impacts on central kitchen operations while staffing events in Todd.

Christ’s College Cambridge

Refurbish Plumb

USES KEY

Refurbish Sosnow

Intervention in existing building New build library footprint

Add catering kitchen

New build accommodation footprint Circulation Event space

Output Report 2023

MICA 105

Renovate & Improve

Photos of existing conditions

20 Existing conditions

Photos of existing conditions

Share Kitchens Jesus College, MICA Architects

Blyth Building and Y Shared kitchens Summary Information

Design Direction

Brief components: Option 1 - Add ensuites to student rooms,

Blyth and Y are robust, generous 20th century buildings with ample 22m2 student rooms. These are consistently selected last on the room ballot despite their attractive location and large size, presumably because they have multi-user shower and wash-rooms shared by up to 11 students. As previously noted in an estates report, fitting these with ensuites would bring the College Housing stock to roughly 50:50 ensuite and shared facilities. The rooms are so generous that they could be divided in two (and each room has two windows per room, so this is conceivable) and still be larger than some commercial market student accommodation.

re-purpose shared WCs as kitchens

Option 2: convert one room plus gyp into larger shared kitchen

Dependencies:

Option 2: student room loss of 1/floor therefore 4 rooms/building, 8 total

Related projects: 21 Blythe Student Hub Deep energy retrofit Area

Existing refurbished: Y: 1672m2

Blythe (note this includes GF): 1672m2

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <35kWh/m² Water use

<75l/person/day

Sustainability

Wellness

106

Opportunity areas

Installing ensuites would allow the installation of supply and extract mechanical ventilation with heat recovery for highly efficient servicing, particularly important once building fabric upgrades have been carried out. The shared bathrooms could then be converted into shared kitchens, an amenity expressly requested by a large number of undergraduates, as well as alumni. This would offer a wider range of student room types within the domus site, with undergraduates being able to choose to prepare their own meals in a kitchen that was fit for purpose,

Christ’s College Cambridge

BB 6

BB 4

BB 13

BB 15

BB 17

BB 19

BB 2

BB 3

BB 1

Equally, retaining some rooms as non-ensuite would be create a wide range of price-point rooms on offer to students. The shared shower rooms could be retained, and single room combined with the existing gyp room for rooms that benefit from a shared kitchen, but at the lower price point of a shared bathroom

BB 12

BB 14

BB 16

BB 18

BB 20

Option 1 with retained shared bathrooms: combine gyp with one room for one large shared kitchen

FIRST FLOOR PLAN

chest of drawers

coffee table

single bed

BB 13

coffee table

single bed

BB 15

chest of drawers

coffee table

bookcase

BB 5

bookcase

BB 7

BB 21

FELLOBB'S SET

GYP

bookcase

BB 8

and socialise in smaller groups around a kitchen table, instead of balancing meals prepared on a single hob on their laps while sitting on the stairs. This act of collective meal preparation and sharing dinners is a supportive mental health practice in addition to being a cost-effective way of life, and offers autonomy to those with restrictive diets due to health of religious reasons.

bookcase

single bed

BB 17

chest of drawers

coffee table

single bed bookcase

BB 19

Chest of drawers Single bed

Built in wardrobe

Shelves

Built in wardrobe

shelves over Chest of drawers

Built in wardrobe

Chest of drawers

Built in wardrobe

Chest of drawers

CLEANERS CUPBOARD

Coffee table

STORAGE

BB 14

Chest of drawers

BB 16

Chest of drawers

BB 18 Single bed

coffee table

chest of drawers

BB 20 Single bed

coffee table

Chest of drawers

bookcase

coffee table

bookcase

Single bed

bookcase

coffee table

bookcase

Single bed

Built in wardrobe

bookcase

BB 12

BB 21 FELLO� 'S SET

Single bed

single bed

bookcase

Option 2 with rooms converted to ensuite: Kitchen takes place of shared bathroom Design proposal by Bidwells, 2015 FIRST FLOOR PLAN

Output Report 2023

MICA 107

108

Christ’s College Cambridge

Future Capacity

Output Report 2023

MICA 109

Future Capacity 1

Photos of existing conditions

12B

8 9 10

Diagrammatic reconfiguration

Example study bedroom at tree canopy level

Hobson Street Future accommodation capacity Same footprint, different use

Summary Information

Should the Hobson Street site be deemed unsuitable for the new working library, alternative uses are possible within a similar building mass envelope. If there is a desire to provide additional student accommodation within the Domus site, we believe around 30-36 study bedrooms could be achieved over floors 1, 2, and 3, with shared kitchens. The ground floor would be reserved for other more public uses.

Brief components: Cafe, servery, wellness suite

Prayer room, tutorial office

Dependencies:

Student room loss of 11

Related projects: 13 Shared kitchens

Deep energy retrofit

Area

Existing refurbished: 399 m2 GIA

New build pavilion: 120m2

This, in addition to the three fellows flats on the fourth floor, which would be included in either design option. Student accommodation naturally requires corridors between rooms and flats, and so lends itself better to linking into multiple points of entry. Thus, it is only with the configuration of this building as a student accommodation hub that we would recommend linking to staircases X and Q to provide step-free access to the upper levels. It must be noted that P, Q, and X staircases are in a poor state of repair, and are both Grade II listed buildings. As such, extensive and sensitive repairs to these buildings are recommended as part of this option.

Landscape: c 150m2 Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <35 (resi) <60 non resi or kWh/m² Water use

<75l (resi) or <4.5l/person/day (non-resi)

Sustainability

Operational & embodied carbon, social

110

Opportunity areas

Christ’s College Cambridge

Christ’s College Opportunity Cambridge Areas

One lift unlocks four buildings

Example rational prototypical accommodation layout Masterplan Output Report Report 20232023

MICA

111

Future Capacity

Existing chapel court carpark

Photos of existing conditions

Existing view south of Third Court

Student Accommodation Building Future Capacity Summary Information Brief components: Ensuite study bedrooms, 15m2 Shared kitchens (one per floor) Dependencies:

Related projects: Area

Chapel Range: 1200 m2 GIA (4 storeys)

Third Court South Range: 1000m2 (4 st)

Master’s Range: 640m2 (4storeys)

Cost £ Embodied Carbon <350kgCO2/m2 (LETI target) Operating energy <35kWh/m² Water use

<75l/person/day

Sustainability

Operational & embodied carbon, social

112

Opportunity areas

We have identified three possible building sites clustered around the Chapel court (currently a carpark) as identified in the sketch adjacent. – The largest of these would replace the existing maintenance building, creating a new facade on Hobson Street. While this building is not listed in itself, it is likely to be deemed part of the listed curtilage, and is a site of local interest by the Local Authority Conservation Officer, as the College’s recent experience renovating the maintenance building in 2017 testifies. – The south range of Third Court would complete the fourth side, opposite Stevenson and adjacent to Blyth and Y. This would occupy a slice of the north side of the Master’s Garden and require careful design to prevent overlooking of the Master’s Lodgings, potentially limiting to a single aspect north-facing bank of rooms. Thus the potential room numbers would be limited to around X per floor, over four floors – The smallest range would sit within the part of the Master’s Garden currently given over to car parking and the allotment style vegetable garden. Again, this range would require careful design to prevent overlooking and invasion of privacy, and sits close to the Chapel and affects the setting of this Grade 1 listed medieval fabric, as well as in close proximity to the fabulous (but untamed) wingnut tree with associate Tree Protection Order. Collectively, these buildings (together with Hobson Street carpark site) could realise up to 180 rooms for the College, should the fellowship choose to expand numbers living within the College boundary.

Christ’s College Cambridge

25m 10m

10m 16m 10m

30m

Output Report 2023

MICA 113

114

Christ’s College Cambridge

Pathway to Net Zero

Output Report 2023

MICA

115

Pathway to Net Zero 754 - Christ’s College Masterplan Project Type Domestic Existing/New Certification RIBA Stage

Masterplan Residential (dominant use) 12,000/+2500 GIA Passivhaus / BREEAM / LEED / WELL Masterplan

Sub-standard Business as usual 2025 Targets Water Cycle (litres/person/day)

Operational Energy (kWh/m2/year)

o rb

Biodiversity (increase in species)

gy lo

Embodied Energy (kgCO2/m2/year)

2030 Targets

Sustainable Life Cycle Value (£/m2)

Sustainable Connectivity (kgCO2e/km/person/year)

ll We

Passive design measures

Good Health and Wellbeing

Communities and Social Value

Waste

Carbon Operational Energy and CO2 (kWh/m2/year)

35 resi/65 non-resi

Embodied Energy and CO2 (kgCO2/m2)

300 resi/350 non-resi

Sustainable Connectivity and Transport (kgCO2e/km/person/year)

Passive design measures

Fabric first, PH principles

Waste

Reuse building materials

Wellbeing Good Health and Wellbeing

Green setting

Sustainable Communities and Social Value

Variety of social and living

Ecology

Addressing the Climate Emergency

There has never been greater awareness and scrutiny of the impact of climate change and the built environments net contribution of embodied carbon and the link to rising temperatures globally. Through our current work we are acutely aware that the response to the climate emergency is front and centre to the way decisions are made on large collegiate estates such as Christ’s, about the building stock (new and old), and the consideration of site wide infrastructure that informs a long-term delivery of service and maintenance. Within such institutions students are, rightly, holding decision-makers to account and are asking how we can do more and how we can be at the forefront of change. We have undertaken a holistic overview of the sustainable design potential of the spatial interventions for Christ’s College, based on the MICA bespoke sustainability tracker. This in turn is based on exemplary industry standards of the RIBA Sustainable Outcomes Guide, which sits as guidance alongside the RIBA 2030 Climate Challenge. This in turn is informed by the UN Sustainable Development Goals, particularly the nine which are specifically relevant to architecture and urbanism principles, as highlighted opposite.

Sustainable Water Cycle (litres/person/day)

95 resi/5 non-resi

Sustainable Land Use and Biodiversity (increase in species)

+12% recommended

Sustainable Life Cycle Value (£/m2)

TBC Sustainability Design Performance Assessment 2023

MICA

River Witham, Boston

Draft Regional Water Resources Plan for Eastern England November 2022

Build less

Build collaboratively

Primary Actions

Build

for the

The themes under which the new build projects, building retrofits and interior interventions are examined fall under three broad categories: Carbon, ecology, and wellbeing, with ten subcategories of operational energy, embodied carbon, sustainable connectivity, passive design measures, waste, water cycle, biodiversity, sustainable life cycle, good health and wellbeing, and communities and social value. The complete sustainability tracker is included in Appendix X.

R IB A S U S TA I N A B L E O U TCO MES GUIDE

LETI Embodied Carbon Primer Supplementary guidance to the Climate Emergency Design Guide

light

future

Build wise Build low carbon

L ONDON E NERGY T RANSFORMATION I NITIATIVE

Other key documents referenced include the Draft Regional Water Resources Plan for Eastern England, which was published in Draft for in November 2022, and the Cambridge Local Plan, published in 2018, as well as the open-source guidance published by the Low Energy Transformation Initiative including their Climate Emergency Design Guide and Low Embodied Carbon Primer.

116

Christ’s College Cambridge

Introduction

Energy Label

Origin of Electricity Supply

Christ's College

Operational energy It is imperative that all work undertaken by Christ’s align with the College’s publicly stated aim to reduce reliance on fossil fuels by 30% by 2030, as well as align to the University of Cambridge pledge to reach net zero Scope 1 and Scope 2 emissions by 2048, two years ahead of the UK legislated target of net zero by 2050, as enshrined in the Climate Change Act (2008).

Purchased SmartestEnergy's Renewable Specific product, providing certified 100% renewable electricity generated from Solar from 01 April 2021 to 31 March 2022 Electricity Category

gCO2/kWh

A+

0-20

21-100

101-250

251-450

451-600

601-800

801+

MWh Supplied

845

CO2 Emissions

Electricity Source Renewable Specific

A+

Total electricity supplied:

845MWh Total scope 2 emissions:

0kgCO2 Total radioactive waste:

0kg Renewable Specific fuel mix:

Scope 1 and Scope 2 emissions

Scope 1 emissions are defined as those associated with direct emissions generated by a client on site. For Christ’s this means the emissions from the burning of natural gas in a number of boilers across the site. Scope 1 also includes the emissions associated with college vehicles, which fall outside the scope of this space planning exercise, but can be readily calculated by the college maintenance team. Scope 2 emissions encompass indirect emissions from purchased electricity. The college appears to purchase the majority of its electricity through an accredited green tariff, and as such can be considered already to be net zero. The evidence provided by the College account for around 80% of the annual electrical consumption according to metre readings, so care should be taken that the full electrical consumption is covered by green tariffs.

100%

Solar PV

Reporting zero carbon emissions Our 100% renewable electricity products are certified by the Carbon Trust and conform to the Greenhouse Gas Protocol. This enables our customers to report zero carbon emissions for purchased electricity from SmartestEnergy when using the market-based reporting method. The emissions provided in this label are in CO2, not CO2e. The Greenhouse Gas Protocol Scope 2 Guidance states that emission factor sets may provide CO2 emission rates, which would not include emission rates for CH4 and N2O. Our Carbon Trust certification is reviewed annually to ensure ongoing compliance. Please refer to the SmartestEnergy website for full details of the most recent published compliance period.

Issued by SmartestEnergy Ltd

This energy label evidences the procurement of renewable electricity. For completeness, it also includes any conventional electricity supply from SmartestEnergy procured during the same compliance period. This label refers only to the sites that were supplied by SmartestEnergy in the reporting period stated above and is nontransferable. Please refer to your billed account for a full list of sites covered. Please note: Numbers on this Energy Label are subject to rounding.

Scope 3 emissions include upstream and downstream emissions from purchased goods and services, including employee community, which we have made some initial assumptions and recommendations about in the following sections. Other aspects of Scope 3 are addressed by the University of Cambridge Green Impact Award for Colleges self-scored accreditation that Christ’s undertakes annually, but we recommend that a full carbon footprint audit is undertaken by the college in accordance with HM Government Environmental Reporting Guidelines most recently published March 2019, with the UK Government Greenhouse Gas Conversion Factors for Company Reporting 2022, as part of understanding the full College footprint including aspects other than the operation of built assets.

Output Report 2023

MICA

117

Pathway to Net Zero

1.811MWh Electricity Scope 2

Christ’s College Commitment to reduce fossil fuels by 30%

Emissions

Reduction due to retrofit

+ new electric

Midway point

1.811MWh Electricity Scope 2

+ new electric

3.782MWh Gas Scope 1

Reduction due to retrofit

2.64MWh Gas Scope 1

2022

2.125MWh GSHP capacity

2030

1.811MWh Electricity Scope 2

2.64MWh Gas Scope 1

+ new electric Reduction due to retrofit

University Commitment to Net Zero Scope 1 and 2

2039

1.811MWh Electricity

UK legislative Commitment to Net Zero

0MWh Gas 2048

2050

Mapping Christ’s College Pathway to Net Zero

De-carbonisation Balance supply and demand

On-site renewables : Ground Source Capacity

Achieving the College’s stated goal of 30% reduction by 2030 could be achieved by simply switching to direct electric heating of hot water (immersion tanks) and electric panel radiators in all buildings and continuing to purchase on a green tariff. However, the running costs associated with these would be prohibitively expensive, and it is unlikely that the local electrical grid would have sufficient capacity without adding substations, a significant upfront expense that would be passed on to the college.

A feasibility study of the College’s energy capacity in ground source heat pumps was carried out by BA Hydro in 2022. This is helpful in making high-level predictions about what can be achieved through the ground. The extant study anticipates that around 2.125MWh of capacity is available, compared to the current gas usage across the college of 3.782MWh (around two thirds of the current energy use).

A more cost-effective solution revolves around a two-pronged approach: 1. Reduce the energy demand through pragmatic retrofit of existing buildings. 2. Maximise the use of on-site renewables and low carbon technologies including photovoltaics, ground-source and air-source heat pumps.

Ground source is a strategically useful method of generating renewable energy on site due to the relatively large open spaces within the college, particularly the Fellows Garden. Although it is intrusive to install, it generates higher coefficient of production (typically 4:1) which is stable across the seasons, and once installed is invisible below ground, with landscaping reinstated at ground level. The possible points of failure are the interfaces, which are located at ground level in plant rooms that replace the existing gas boiler plant.

In order to arrive at a net zero operations by 2048, the trajectory illustrated opposite is required, broadly aligning with the 30 by 30 commitment already in place. As each building is removed from gas supply, a smaller amount of electrical energy use will be added, as the air source- and ground source heating options still draw on electricity, but due to their high coefficient of production, this is smaller than the direct energy equivalent in gas.

118

Christ’s College Cambridge

FELLOWS’ TOP 93MWh

ASHP

HOBSON STREET CARPARK 175MWh

THIRD COURT 386MWh Blyth 549MWh

FELLOWS’ GARDEN 549MWh

MASTER’S GARDEN 256MWh

Chapel

SECOND COURT 352MWh BA Hydro Output Estimates

FIRST COURT 314MWh

MWh/a

First Court

314

Second Court

352

Third Court

386

Hobson Street Carpark

175

Fellows' Garden (main)

549

Fellows' Garden (top)

Master's Garden

256

Subtotal

2125

Areas with output not yet calculated Darwin Garden

100

Chapel Carpark

100

Total

2325

Capacity estimated by BA Hydro, October 2020 BA Hydro feasibility study plan and table of capacities Output Report 2023

Capacity not yet calculated MICA 119

Pathway to Net Zero

Our Proposal: 15

1. no gaps corners 2. insulati and tap 3. insulati 4. window surroun 5. wall rem 6. no therm entering internal 7. no therm behind 8. natural, lower em

5 7

Certain areas of the college were not included in this initial feasibility study, and should the study be revised, we would recommend that they are included in the revised areas. It is possible that the Darwin Garden was excluded as it was a construction site at the time of the study being undertaken, and part of the area is devoted to stormwater attenuation tanks. The chapel carpark may have been excluded due to the location of underground services.

14 4

and mo tempera from los as prob 12. minima use of n

All locations of proposed GSHPs will require further study to ensure that they do not impact listed buildings, archaeology, historic watercourses etc.

risk of m

Air Source capacity

13. loss of o but refe approac

Air source capacity is essentially unlimited, but is constrained by planning and heritage considerations. New building typically locate the heat pumps at roof level, but in the case of Yusuf Hamied Centre they have been located within the undercroft of the Lasdun building. There is remaining capacity to locate further heat pumps in this location, at the expense of remaining carparking spaces. The Domus site contains much residential accommodation, and is surrounded on all sides by residences, including Christ’s Lane and King Street. Any new ASHP equipment would have acoustic restrictions placed on it by planning conditions, requiring space-hungry acoustic enclosures, and space allocation for the plant itself, whether at ground level for existing buildings or on flat roofs of new build elements.

Existing and proposed energy use

Together with Clearwater services engineers, and with input from the College Estates & Maintenance team including gas and electricity meter readings over the past 15 years, we have established the assumed existing heating and hot water demand on a building-by-building basis. Based on rules of thumb drawn from recent and relevant experience of similar building typologies and ages, we have applied known methods of insulation retrofit to arrive at predicted energy use reduction.

14. externa

repaired pointing wall to d no H&S masonr 15. vapour equalis of inters conden

Example of best-practice retrofit with solid masonry wall from “Sustainable Renovation: Improving Homes for Energy, Health and Environment”

can diss 16. reduced timber s surface internal 17. reduced floor joi above 18. wall rem reduced leachin masonr thaw ac

SUSTAINABLE RENOVATION: Improving Homes for En

Full details of proposed interventions to existing buildings are captured in chapter 2 but the strategy is assessed building by building on the following basis:

Buildings

Roofs

Walls

Windows

Ventilation

Grade 1 Listed (16th and 17th century fabric)

First Court, Fellows’ Building

270mm insulation

Add secondary glazing with trickle vents

Add continuous background ventilation

Grade 2 Listed (18th or 19th Century fabric)

C, D & E, P&Q, Todd, X, Stevenson

270mm insulation

50mm insulation internally

Replace with ultraslim double glazed panes

Add MVHRs or continuous background ventilation

Unlisted 20th century fabric

Blyth, Y, Lasdun, 4 Stairs

270mm insulation

50mm insulation internally

Replace with ultraslim double glazed panes or triple glazing

Add MVHRs or continuous background ventilation

120

9. no drau regardle 10. all surfa risk of c 11. relative

Christ’s College Cambridge

From: To: Cc: Subject: Date:

Andy Long Jessie Turnbull 754 Christs College; Stuart Cade RE: Christs College - Heat loads 28 August 2023 16:32:49

Hi Jessie, updated calcs following our discussions on Friday. Also I have updated where I spotted a couple of errors. So, with the upgrades we suggested this gives a 35% reduction in energy. With those upgrades we are also close to the available ground energy (10% short). And we might have more energy from the ground from Darwin Garden and the under the library (depending on whoever designs it and either keeps the old one or demolishes it). My calcs don’t allow for the kitchen. As mentioned before a breakdown of the gas meter between CDE/Fellow would be ideal including sub meters to the conference part of Lasdun and the hot water heaters. See you Wednesday - meet at Porter Lodge?

GSHP ASHP GSHP/ASHP

Walls and Windows Windows

Building

System Blyth Stevenson Y P+Q X Z Z Annex Masters 1st Court + Lib 1st Court Library 0 0 Fellows etc Fellows CDE Lasdun Fourstairs

GSHP GSHP GSHP GSHP ASHP GSHP ASHP

GSHP GSHP

GSHP GSHP ASHP / GSHP ASHP / GSHP

Area Fellows Garden Fellows Garden 3rd 3rd

Modelled Max Output MWh/a

% Reduction

161

Blyth

1672

Annual Gas Consumption

Boiler

Revised

Capacity

kWh/a

Current kWh/a

kWh/m2/a

386

Masters

256

314

352

2125

151 Y RIBA Sustainable 125 P + Q Outcome Metrics

39%

1672 36 608 18 (new build, compliance approach) 37 X 247 9 120 kWh/m2/y Operational Energy 160 Z 2012 26 kWh/m2/y 48 Z Annex 629 14 83 Masters 706 4 1st Court + Lib 4165 38 514 1st Court 3400 28 60 Library 765 10

Embodied Carbon kgCO2e/m2 224 141 240 327 2368 -243 -10.3%

Andy Potable Waterbasis, Use Existing and proposed energy use analysis of a building-by-building Litres/person/day underpinned by actual usage

Business as usual

2 13,476 1200 kgCO 2e/m Fellows etc 9020 Fellows 1065 CDE 974 Lasdun 3880 Fourstairs 3101 9,020

125 l/p/day (Building Regulations England and Wales)

Estimated Peak Load 2/3 Boiler W/m2 kW

kW 80 6 60

161,367

265,688

RIBA 2030 Climate Challenge target metrics for domestic /181,321 residential301,325 181 Stevenson 1765 44 40%

175

2nd 2nd Garden 3rd

Persons

m2 Annual RIBADemand 2030 Climate Challenge – version 2 (2021) MWh/a

642

Car Park

1st + Masters 1st + Masters

Area

270 156 16 18 76 46 156

40% 150,802 250,990 214,977 202542% Targets124,616 2030 Targets 40% 37,379 62,163 < 60 kWh/m2/y < 35 kWh/m2/y 42% 160,429 274,937 39% 47,623 77,566 44% 83,051 148,425

17% 42%

514,369 59,504 573,872 2 < 80034% 1,520,460 kgCO2e/m 17% 42% 38% 42% 36%

223,619 141,375 240,333 326,711 932,038

35%

2,452,498

< 95 l/p/day

720,312 618,800 101,745 720,545 < 625 2,316,616 kgCO2e/m2 1,465,670 268,380 245,448 388,000 564,382 1,466,210 3,782,286 3,782,826 -540

159

140

92.4

133.8

171 160 105.6 141.2 150 130 85.8 133.8 354Notes 110 72.6 48.6 252 25 19.8 Targets based on GIA. Figures include unregulated energy 137regulated &210 138.6 161.0 consumption irrespective of source 123(grid/renewables). 65 50.3 210BAU based on 65median all42.9 56.5 electric across housing typologies in CIBSE benchmarking tool.

173 400 264 333.2 1821. Use a ‘Fabric First’ approach 272.0 2. Minimise energy demand. Use 133 efficient services and low carbon heat 61.2 3. Maximise onsite renewables

Whole Life Carbon 1,870Use RICS1,305 802(modules 1078.1 A1-A5, B1-B5, C1-C4 incl sequestration). 162Analysis should include minimum 721.6 cost, include138.6 substructure, 85.2 252of 95% of 210 superstructure, finishes, fixed FF&E, 252building services and associated 77.9 refrigerant leakage. 100 540 356.4 50.0 1821. Whole Life 210Carbon Analysis 138.6 186.1 2. Use circular economy strategies 7863. Minimise960 offsetting 633.6 & use as last 399.2

2,656

< 75 l/p/day

resort. Use accredited, verifiable schemes (see checklist).

2,265

1,436

1,477

BAU aligned with LETI band E; 2025 target aligned with LETI band C and 2030 target aligned with LETI band B. CIBSE Guide G.

From: Andy Long Sent: Monday, August 21, 2023 3:22 PM To: Jessie Turnbull <jturnbull@micaarchitects.com> Cc: 754 Christs College <754ChristsCollege@micaarchitects.com>; Stuart CadeFor (scade@micaarchitects.com) <scade@micaarchitects.com> reference purposes current (2021) Good Practice for new build projects in-use now are as follows: Subject: Christs College - Heat loads Non-Domestic (new build office):

Operational Energy 90 kWh/m2/y (GIA) and/or DEC C(65) and/or NABERS Base build 5; Embodied Carbon LETI Band D 1180 kgCO2e/m2; Potable Water Use 16 l/p/day Non-Domestic (schools): 2 2 3 /y (GIA); Embodied Carbon Band Dare 870 ; Potable Water Use 3m /pupil/yrannual output from the Operational 75 kWh/m Please see attached. There quite a few assumptions in here but without massaging any ofEnergy the numbers in short provided the first court LETI and library onkgCO an ASHP we are close to having adequate 2e/m Domestic/Residential: ground to provide the remainder of the colleges heating and hot water demands provided the windows and walls are upgraded (there may also be scope for improvements to the roofs) - we are 273MWh/a short(about 2 2 (GIA) noCentre gas boilers; Embodied Carbon LETI Band D 1000 kgCO2e/m ; Potable Water Use 110 l/p/day Operational Energy 60and kWh/m 13%). However, with refined calculations and some other air source heat pumps such as for Lasdun Yusaf/yHamied we should be pretty close. Hi Jessie,

I have allowed for ASHP throughout for the electrical loads as this is worst case, but we feel we have adequate electrical capacity anyway.

The adjacent RIBA 2030 metrics should 2030 ChallengeCDE target metricsbuilding for alltobuildings 1. Would it be possible at some point to install either local heat or gasRIBA meters to theClimate Lasdun, Fourstairs, and Fellows get a better understanding of the heat /gas usage, especially as this meter is some form37% the baseline forconsumption any new-build of the site overall gas and Lasdun has electrical heating. Best Practice Which gas meter supplies boilers in staircase O or2.renovation, whiletheunderstanding Health Metrics References 3. Where is the octagon? that achieving the limited overheating Overheading 25-28 °C maximum for 1% of occupied hours CIBSE TM52, CIBSE TM59 noted willassumptions be challenging costly. We can discuss at meeting onand Wednesday and where we go from here. > 2% av. daylight factor, 0.4 uniformity Daylighting CIBSE LG10 Cambridge summers are continuing to < 900 ppm CO levels CIBSE TM40 become hotter, and those occupying < 0.3 mg/m ) Total VOCs Approved Document F Regards College rooms are likely to experience < 0.1 mg/m ) Formaldehyde BREEAM Andy uncomfortable temperatures. 2

Andy Long Clearwater, Suite 2, Cringleford Business Centre, Intwood Road, Cringleford, Norfolk, NR4 6AU

With this Challenge, the RIBA seeks to encourage outcome-based approaches to design. The RIBA advocates that buildings designed today should ideally aim for the 2030 targets now, but as a minimum

adopt the 2025 performance targets. T: +44 (0)1603 451595 E: andy@clearwaternch.com W: www.clearwaternch.com

The RIBA appreciates that some projects may be impeded in delivering these targets by factors outside the Chartered Practices control. Progress above business as usual approaches should therefore be recorded and recognised as an achievement in the right direction along the trajectory towards better performance outcomes.

Output Report 2023

MICA 121

’s 1s tC ou rt Li br ar Fe y llo w s’ C D & E La sd un Fo ur st ai rs

as te r

ne x

An Z

Q &

yt h St ev en so n

Pathway to Net Zero

Existing and Proposed As demonstrated in the adjacent bar chart, we expect to achieve between 17% and 44% reduction in energy use across all buildings. The grade 1 listed fabric, where interventions to wall fabric are limited by existing internal wall panelling or plaster detailing are on the lower end of this range, while buildings that can achieve improvements across the whole building envelope, and have a high form factor (a high ratio of external envelope relative to floor area) such as Master’s Lodge, Lasdun and C, D & E stairs are above 40%. This improvement of building envelope collectively takes the whole site energy demand down to 2,368MWh/a (currently 3,782 MWh/a), a 38% reduction on the current usage, and within 10% of the estimated energy available from GSHPs. These improvement alone overshoot the target of 30% savings by 2030, but it is unrealistic to think that all buildings can be retrofit in this short time, which brings us to the alternative sources of heating. The revised heat loads of each building have been evaluated with the energy available from Ground Source Heat Pumps, which tally relatively well with the local demands as shown in the adjacent diagram, which shows the power available in each zone, and the loads of each building adjacent, and indicative red arrows that show how the power is allocated from GSHP to buildings. Where a building is remote from GSHP capacity (e.g. Z Annex), or there is insufficient capacity (e.g. X) then we have assumed that it will use ASHP instead. Large buildings with high demand that cannot be fully met with GSHP take a combined approach to meet the demand (e.g. Lasdun, 4 Stairs). This may be overcome as the capacity of Darwin Court is realised. As each cluster of 122

buildings is brought forward for renovation, a careful study of the appropriate method of heating will be required to ensure that appropriate flow rates are designed in to the mechanical systems, and that any external envelope or other visible items receive the appropriate local authority and heritage permissions. The sequence of building retrofits and associated energy savings is unpacked in full in the Phasing Chapter 6, which balances these retrofit projects with timing of GSHP array installs, new build interventions and site logistics.

Building Name Existing: power (MWh/annum) Revised: power (MWh/annum)

Yellow box: windows, walls and roof improved

Building Name Existing: power (MWh/annum) Revised: power (MWh/annum)

Green box: windows and walls improved

Building Name Existing: power (MWh/annum) Revised: power (MWh/annum)

Blue box: windows improved only

Building powered by ground source heat pump Building powered by air source heat pump Building powered by ASHP/GSHP combo

Christ’s College Cambridge

4 Stairs Existing: 564 Revised: 327 Z Annex Existing: 76 Revised: 48

FELLOWS’ TOP 93MWh

ASHP Lasdun Existing: 388 Revised: 240

Z Existing: 62 Revised: 37

ASHP X Existing: 62 Revised: 37

P&Q Existing: 214 Revised: 124

HOBSON STREET CARPARK 175MWh

Blyth Existing: 301 Revised: 181

THIRD COURT 386MWh

Y Existing: 251 Revised: 151

Blyth Existing: 265 Revised: 161

MASTER’S GARDEN 256MWh

FELLOWS’ GARDEN 549MWh

Fellows’ Build Existing: 268 Revised: 224

Master’s Lodge Existing: 148 Revised: 83

SECOND COURT 352MWh

CHAPEL

BA Hydro Output Estimates

C, D & E Existing: 245 Revised: 141

FIRST COURT 314MWh

First Court Existing: 619 Revised: 514

MWh/a

First Court

314

Second Court

352

Third Court

386

Hobson Street Carpark

175

Fellows' Garden (main)

549

Fellows' Garden (top)

Master's Garden

256

Subtotal

2125

Areas with output not yet calculated

Library Existing: 102 Revised: 60

Darwin Garden

100

Chapel Carpark

100

Total

2325

Capacity estimated by BA Hydro, October 2020 Capacity not yet calculated Output Report 2023

MICA 123

Pathway to Net Zero

9.Feasibility Study Area

District Heat Networks

District heat networks are an efficient method of supplying heat to a number of buildings within a network. Current technology has moved on from the high temperature district heating networks that were implemented in the early 2000s such as those serving the London Olympic Park network of homes and public buildings due to the energy loss in the pipework distribution. Current technology is known as Fifth Generation (or 5G, unrelated to mobile phone networks) systems of ambient temperature loop systems, which allow buildings tapping into the system through a closed-loop system to reject heat (e.g. a supermarket with lots of chilled displays) or to draw heat from the loop (e.g. an accommodation building with high heat and hot water demand). Because the medium is maintained at an ambient temperature within the ground there is no concern for heat loss inefficiencies, but it does rely on a relatively balanced network of users. The college is unlikely to be in a financial position to undertake such a large piece of infrastructure as an upfront piece of capital investment. However, there is a study underway jointly between Cambridge University and Cambridge City Council to appraise areas of the city for potential for a new district heating network. Very little information exists currently in the public domain about this project, but Christ’s College sits within the “Core Network City Area” on the edge of Zone 5 and Zone 6 “identified heat loads” as illustrated opposite. Should this network become available, it is recommended that the College explore the option to join the network as a highly efficient means of heating (and, if required, cooling) the College.

Christ’s College

City Centre Heat Network Map published by Cambridge City Council Technical and economic feasibility study expected to complete in summer 2023

The feasibility study is being undertaken by Jeff Laider of Sustainability Co. on behalf of the stakeholders and is anticipated to complete in summer 2023. It is understood that the earliest “heat on” date that can be expected is 2028, so the project should be monitored closely over the coming years to ascertain whether Christ’s can benefit from the network. Should the college choose to do so, careful negotiations would be required to ensure that the cost and energy efficiency of the network is passed on to the College. A comprehensive understanding of the flow temperatures and building fabric efficiency is understood and implemented so that the College can efficiently use the energy source. While there remain so many unknowns surrounding the district heating network within Cambridge, this report has focussed more directly on sources of energy within the College’s control, including GSHPs, ASHPs and Solar.

Example of an ambient loop district heating system with a number of tenants

124

Christ’s College Cambridge

Possible configuration and visibility of solar panels on Bodley Library

Example of solar panel installation on Great St Mary’s standing seam nave roof

Areas with potential for solar arrays within Christ’s College

Solar Power Realising solar potential

The College has made significant steps in realising the potential for solar power across the estate to produce electricity, with new photovoltaic panels (PVs) already installed on hostels that have been retrofit, and with an extensive solar array install underway on the Lasdun Building. To complement this, we have engaged in a preliminary study of the solar capacity of the remaining roofs across the Domus site, informed by Cambridge Solar. Blythe and Y have relatively low-pitch roofs with only minimal projections. The roof-scape is essentially invisible from ground level, and the buildings are set well within the College curtilage so have very low impact on heritage settings, making them good candidates for PVs. As far as we have been able to ascertain, the impressive copper roofs have not been replaced for the duration of the buildings >70 year lifespan and so are likely to be reaching the end of the their lives. Upon replacement, we would recommend the install of photovoltaic solar arrays.

Output Report 2023

More contentiously, the historic roofs of major First Court buildings including the library, chapel, and hall all have significant areas of uninterrupted south facing roofs. Slate is a challenging installation substrate, and these prominent heritage locations will attract intense scrutiny from the Local Authority and Heritage England. Photovoltaics integrated with slate-effect tiles are available, but they have a considerably lower efficiency and a higher installation cost due to the increased wiring required to tie the system together. The total solar capacity of the whole site is around 115MWh, equivalent to approximately 5% of the total College energy demand after building renovations. While this may seem like a small amount relative to the total demand, this energy is essentially free after the initial investment. A typical lifespan of PVs is currently 25 years, and PV technology continues to improve impressively year on year, such that by the time they are replaced the efficiency will be even greater. Consideration is required on the carbon footprint of the PV panels themselves and the extractive nature of minerals required for their manufacture, which should be balanced against the carbon footprint savings in operational energy.

MICA 125

Pathway to Net Zero

LETI guidance: emission breakdown of a building’s life cycle

Typical proportion of embodied carbon contained in building components,

Typical embodied carbon of facade elements

Energy Storage

New Build

Battery or Thermal Capacity

The conversation thus far has focused on reducing demand from existing buildings and re-providing the energy from electrical and renewable sources. It is important to note also that this plan introduces elements of new build. In order to be coherent with the site-wide energy strategy, these must conform to the most stringent of energy use as recommended by the RIBA 2030 Climate Challenge and LETI guidance: to this end the proposed building would be powered only by electricity, utilising air source or ground source heat pumps, and be ambient loop “ready” to connect to a wider system for heat source and rejection, should this come online as part of wider College works.

Should the college arrive at a position where more energy is being generated by on-site activities than can be used within the daily or seasonal cycle, a system of thermal or battery storage should be considered. However, through the studies carried out on this site, it does not appear that there will be a surfeit, due to the energy intensive nature of accommodation and hot water demand. If this balance should change in the future, the applicability of batteries should be reconsidered.

The building as a whole should be designed to the RIBA 2030 Challenge) targets of: – < 35kWh/m²/ year operational energy for residential building (e.g. student accommodation) – < 60kWh/m²/ year operational energy for academic building (e.g. library) These should be calculated using CIBSE TM54 analysis, currently agreed by professional bodies to be the most accurate method. Further, we recommend that buildings are designed to Passivhaus certified standard, which is the best proven method for ensuring that buildings perform to their designed energy standards, due to the rigorous analysis of regulated and unregulated energy, heat losses and cold bridging, as well as the testing regime that verified performance.

126

Christ’s College Cambridge

Tactile and wellbeing qualities of wood

In-situ reinforced concrete

Heavy timber construction allows generous bays

Cross laminated timber (CLT)

Light gauge steel

Steel and pre-cast plank

Embodied Carbon Limiting the carbon footprint of the new building is extremely important as these emissions will contribute to the rapid global heating that is currently happening as we rapidly approach the Paris Climate Agreement target of 1.5°C of temperature rise, anticipated to be breached in the next six years. As such, it is important to adhere strictly to best practice limits on embodied Example: EOC’s embodied carbon appraisal of structural options for student accommodation at carbon. This means a mass timber structure and low carbon cladding such as stone is critical, while also using glass very Southampton University judiciously and only where it contributes to the building operation and avoids overheating.

The site location provides straightforward access to the construction site, however a structural As such, we recommend thefast limit and of 350kgCO2e/m² for new design that provides clean construction with reduced vehicle movements would be buildings, which aligns to the LETI 2030 target for ‘Commercial beneficial reducing the impact of theThis works on the school’s main entrance. EOC’s and MICA’s cross office/schools’in and is a 65% reduction over baseline. is extremely challenging to achieve in practice, where laminated timber structure for the student housing at Mansfield College did this successfully. considerations of durability must be weighed against those of carbon footprint. However, with appropriate detailing, mass

The position of the site adjacent to be the neighbouring commercial and residential buildings timberelevated construction and low embodied carbon façades can equally durable as concrete frames. will likely require party wall awards and we have a significant amount of experience in designing and delivering appropriate foundation designs to protect these properties from damage. The site’s flood risk will be a key consideration in the building massing and materiality. It will require that the structure is especially durable below the maximum flood level which can be achieved in a variety of ways depending on the building massing and extent of structure below this level. Output Report 2023

MICA 127

Pathway to Net Zero

Waste A key tenet of sustainable design is to reduce or—where possible— eliminate waste generated by the construction process. Even more critical is to divert waste generated by demolition from landfill when it could be reclaimed and reused, ideally on site.

Existing Timber structure within library interior

The recommended approach for new buildings is to design closely to standard product dimensions to avoid offcuts, and include prefabricated elements where practical, as these can be designed and manufactured off-site with careful minimisation of waste. Demolition should be avoided wherever possible, and buildings reused in the extant form to avoid generating unnecessary construction waste and capitalise on previously expended carbon footprint. Should the new library on the existing working library site be taken forward, the demolition of the existing building must be carefully assessed to reclaim as many precious building materials as possible. Examples of salvageable materials include:

– Timber members: the ground and first floor contain many

Brick with lime mortar on library facade

structural timber members which appear to be in good structural condition and fixed with mechanical joints that can be readily disassembled. These members could be reused as visible structural members on a new project such as a single storey pavilion within the Fellows’ Garden, retaining their structural and aesthetic properties. Other potential uses include reuse as floor coverings or in landscape retaining structures, but these are less desirable as they sacrifice the visual or structural qualities of the timber in a degenerative manner rather than in a circular economy where value is retained in reuse.

– Masonry façades: we anticipate that the 1970s brick has been

constructed with lime (rather than cement) mortar, which is relatively soft and can be readily separated from the brick when the walls are taken down. The salvaged brick can be used as external or internal facing brick or internal and external brick paving. It could also be crushed and used for piling mats or hardcore, but this is a degenerative re-use so is a lower priority than maintaining its aesthetic, thermal mass and structural quality.

Other materials that can be salvaged include zinc roof coverings, glass from the external curtainwall and windows, complete window units, desks, bookshelves, decorative light fixtures, timber doors, internal stone facing. Opportunities should be identified for each material, ideally within the Christ’s College curtilage, including a plan for storing the material until such a time as it can be deployed in a new project. Should this project move forward, a comprehensive inventory of salvageable materials be undertaken, and a circular economy plan formulated in collaboration with a demolition specialist to identify all materials for salvage and a plan for storing these on or off site, if they are intended to be reused within College. All projects, whether internal retrofit or new build, should incorporate principles of circular economy, minimising construction waste, and designing for deconstruction. Careful evaluation of any waste materials generated as part of the construction process, including excavation materials, is required to minimise environmental impact. 128

Christ’s College Cambridge

Timber: reuse members in garden pavilion buildings

Reclaim for external/internal paving, façades, internal walls or landscape elements

Passive Design Measures Define a suitable brief All building retrofits and new build projects should incorporate passive design strategies to operate efficiently, taking advantage of solar gain in winter, while minimising unwanted gains that lead to overheating in summer: – Solar analysis will be carried out to inform the strategic massing of the scheme. The individual units will be designed to optimise passive solar gain / create sheltered micro-climatic areas and reduce exposure on north facade – The strategic layout of the building is designed to minimise unwanted solar gain and create sheltered micro-climatic areas – Solar shading using external louvres / planting will reduce unwanted solar gain – Large-scale planting will be incorporated to provide shelter from winds, to provide shading and evaporative cooling – Soft-landscaping will be incorporated and provision made for its irrigation to minimise localised heat-island effects – Large areas of hard dark surfaces will be avoided to minimise localised heat-island effects – Calculate form factor for new buildings and work on the basis of 2 as a target The most robust measure for passive design is Passivhaus certification, whether to new-build standards or to EnerPHit, the retrofit standard. As each project is brought forward, the certification to be achieved must be verified as part of the brief.

Output Report 2023

MICA 129

Pathway to Net Zero

Water Water demand

Water use in Cambridge is under increasing pressure due to demand rapidly outstripping supply and increasing pressure from droughts. To conserve water in Cambridge, where droughts are increasingly prevalent and the water infrastructure is under unprecedented pressure potable water usage should be limited per building typology – 0.5m3/person/day in academic buildings – <75l/person/day in residential buildings Both of these are aligned to RIBA 2030 Climate Challenge benchmarks, and exceed the current building regulations requirement of 125l/person/day. Cambridge Water’s 2024 Water Resources Management Plan recommends testing scenarios for 90l/person/day to minimise demand on the local water supply and give the college the best possible pathway towards water neutrality (a net zero impact on the local water table). Best practice is already underway at Christ’s College, with low flow fixtures replacing standard shower heads, and toilets being replaced with dual flush cisterns to minimise water usage across the site.

Stormwater control

Sustainable urban drainage is a requirement of all local authorities, and Cambridge’s 2018 local plan is particularly stringent. Attenuation will be required on all new-build projects: incorporating a tank, usually as egg-crate type plastic boxes encased in a waterproof membrane below landscape finishes that holds a certain volume of stormwater for a duration of time after the event, allowing the local drainage infrastructure to drain at a normal rate and not become overwhelmed, avoiding local flooding. However, we encourage and embrace more creative solutions including blue, green and brown roofs as well as green walls or trained wall-planting, and increased permeable surfaces generally. – Blue roofs retain the water on flat roofs above the insulation, but no vegetation is encouraged. – Brown roof is where the substrate surface is left to selfvegetate from windblown and bird lime seed dispersal. – Green roofs, whether intensive (deep soil, lawn or meadow type vegetation) or extensive (shallow soil, sedum type vegetation) are pre-planted with a range of vegetation that is designed to suit the limited soil capacity.

130

Christ’s College Cambridge

Dennis Lasdun “Designs for New Court, Christ’s College, Cambridge: an axonometric section” (c) Lasdun Archive / RIBA Collections

Green and porous surfaces generally perform much better at retaining and slowing down water, avoiding the need for attenuation in the first place. Creating further water attenuating conditions with the landscape such as swales, attenuation ponds, wetlands and rain gardens, will further improve the ability of the landscape to naturally absorb and filter stormwater, and recharge groundwater aquifers, removing the need for buried attenuation and costly drainage. The new Yusuf Hamied Court includes a limited section of extensive green roof towards the north end. The Lasdun building was originally designed with an intensive green roof across the central terrace section, with the appropriate loading designed into the structure. However, we understand that this building has suffered considerably from leakage over the years so reinstating that green roof is likely to lead to further maintenance issues. Foreword and contents

Executive summary

How to respond to Foreword and contents this consultation

1. Introduction Executive summary

2. Demand for water How to respond to now in the future thisand consultation 3. Water available for 1. supply Introduction 4. supply-demand 2. Projected Demand for water now deficits in 2050 and in the future 5. proposed 3. Our Water available for Regional supply Plan

Output Report 2023

6. 4. Retaining Projected flexibility supply-demand in our plan deficits in 2050

Figure ii: WRE’s Draft Regional Plan at a glance

Demand for water

2,135Ml/d 2,300Ml/d

Waterii:available Figure WRE’s Draft Regional Plan at a glance for use Demand for water Water available for use

2,135Ml/d

Accelerate demand management options: • Smart metering • Universal metering • Water efficiency • Further leakage reduction

2,300Ml/d

Other buildings across the college do not have flat roofs, so we

do not recommend introducing blue, Driven by water needs for brown or green roofs. 85% for the public water irrigation, energy production supply, 10% for farm irrigation, and growth 5% energy/industry/other

2,441Ml/d

Tipping point where demand outstrips supply Reducing due to climate change impacts, the need to increase

drought resilience, and environmental constraints on water abstraction

1,800Ml/d

Driven by water needs for 85% for the public water schemes irrigation, energy production supply, 10%Transfer for farm irrigation, South Lincolnshire implemented and growth 5% energy/industry/other Reservoir into to move surplus supply to facilitate water into areas enhanced drought Reducing due to climate change impacts, the need to increase with deficits resilience and drought resilience, and environmental constraints on water abstraction and prepare for environmental reservoirs improvement

Take an adaptive approach to further demand and supply-side options depending on growth, climate change and environmental factors over next 10 years

Transfer schemes Accelerate demand South Lincolnshire implemented management options: 2025-2029 2030-2034 2035-2039Reservoir into2040-2044 to move surplus • Smart metering supply to facilitate water into areas • Universal metering enhanced drought with deficits • Water efficiency and 20222 Extract from Water Resources East “Draft Regional Water Resources Plan” publishedresilience November Fens Reservoir Interim supply for and prepare • Further leakage environmental into supply to options for reservoirs reduction improvement offset licence Suffolk, Essex and Conduct further investigations caps in the east Cambridge to during 2025-2030 to determine Our proposed of our region as meet demand Environmental Destination 2025-2029 2030-2034 2035-2039well as providing 2040-2044 plan prior to new strategy. This will allow all sectors multi-sector reservoirs coming to tailor solutions according to benefits into supply local environmental needs

Our proposed plan

2,441Ml/d 1,800Ml/d

Take an adaptive approach to further 2045-2050 demand and supply-side options depending on growth, climate change Scope for next-generation and environmental desalination fulfil10 longfactors overto next years term environmental improvements, and depending on success of 2045-2050 demand-side measures, MICA including as a result of government policy

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Pathway to Net Zero

How is it measured? Factor

Surface-cover type Semi-natural vegetation (e.g. trees, woodland, species- rich grassland) maintained or established on site. Wetland or open water (semi-natural; not chlorinated) maintained or established on site.

Intensive green roof or vegetation over structure. Substrate minimum settled depth of 150mm.

0.8

Standard trees planted in connected tree pits with a minimum soil volume equivalent to at least two-thirds of the projected canopy area of the mature tree. Extensive green roof with substrate of minimum settled depth of 80mm (or 60mm beneath vegetation blanket) – meets the requirements of GRO Code 2014.

0.8

Flower-rich perennial planting.

How is it measured?

Rain gardens and other vegetated sustainable drainage elements. Hedges (line of mature shrubs one or two shrubs wide).

Surface-cover type

Factor

Surface-cover type

0.7 0.7 0.7 0.6 Factor

Standard trees planted in pits with soil volumes less than two-thirds of the projected canopy area of the mature tree. Green wall – modular system or climbers rooted in soil.

0.6

Groundcover planting.

0.5

0.8

Amenity grassland (species-poor, regularly mown lawn).

0.4

0.7

Extensive green roof of sedum mat or other lightweight systems that do not meet GRO Code 2014.

0.3

0.7

Water features (chlorinated) or unplanted detention basins.

0.2

Rain gardens and other vegetated sustainable drainage elements.

0.7

Permeable paving.

0.1

Hedges (line of mature shrubs one or two shrubs wide).

0.6

Sealed surfaces (e.g. concrete, asphalt, waterproofing, stone).

Semi-natural vegetation (e.g. trees, woodland, species- rich grassland) maintained or established on site. Wetland or open water (semi-natural; not chlorinated) maintained or established on site.

Intensive green roof or vegetation over structure. Substrate minimum settled depth of 150mm.

0.8

0.6

Cities Streets Buildings Paths Spac

Cities Streets Buildings Paths Spaces Parts

Urban Greening

Water harvesting

We have produced an Urban Greening Factor (UGF) drawing and calculation which is a reasonable demonstration of the current capacity of the college, and tested scenarios of how this could be improved, to achieve an UGF of greater than 4.0 (the standard recommended in the London Plan 2021 for residential developments).

Additionally, opportunities to capture, treat and utilise water within the College curtilage have been explored across the site. – Attenuation: Cambridge City Council guidance on stormwater management requires attenuation on site. All proposed new built sites to incorporate – Rainwater harvesting: Harvesting rainwater for reuse in irrigation is low-cost and good future-proofing against irrigation restrictions. Can be installed as an intercept within attenuation systems. Recommended for all new and existing buildings, with priority given to those with planned works to roofs/gutters – Greywater harvesting: harvesting greywater (water used for washing or in kitchens) requires a series of filtration tanks and significant plant space. This is recommended for all new build aspects. – Blackwater harvesting: harvesting water that has been used to flush toilets is challenging and requires extensive plant space or landscape filtration beds. We recommend an option to include composting toilet in gardeners compound/pool house wellbeing centre

The current condition of the College domus site begins at a high baseline due to the extensive gardens, with an UGF baseline of 0.386. With a few interventions, this could be improved to exceed 4.0, with recommendations as follows: – Pervious surfaces such as carparks to be replaced with permeable e.g. resin bound gravel – Areas of the Fellows’ Garden to be repurposed as natural water retaining features. – Areas of lawn to be repurposed as wildflower meadows.

–

Areas of the college could be improved taking into consideration the Cambridge local context and the priority habitats (lowland calcareous grassland, lowland meadows, wet woodland, ancient and species-rich hedgerows, lowland mixed deciduous woodland, open mosaic habitat) with attention paid to where these could be integrated on site. Similarly habitats for priority species including the great crested newt, water vole, otter, common Pipistrelle, Daubenton’s, long-eared and Noctule bats, song thrush, skylark, brown hare can be improved and provided on site.

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Christ’s College Cambridge

754 Christs College Masterplan 754-MICA-ZZ-ZZ_SH-A-50001

Urban Greening Factor REVISION A - STAGE 0 08/09/23

UGF Contribution Existing Baseline

Output Report 2023

Intervention + Base

0.386

Second Court Meadow Improvement

0.014

0.399

First Court Meadow Improvement

0.012

0.397

Fellows Meadows

0.064

0.450

Hobson Carpark Permeable Paving 20%suds

0.005

0.391

Chapel Carpark Permeable Paving 20%suds

0.004

0.390

First+Second

‐

0.411

Second + Hobson

‐

0.405

Notes - Target 0.4 for residential developments and 0.3 for primarily commercial developments

MICA 133

Pathway to Net Zero COLLEGE Elect Meter Readings1

2017-18

04/06/2018

01/10/2018 05/02/2019

01/04/2019

11,570

302,440

305,110

309,340

311,070

115,514

859,763

886,585

916,557

930,191

224,725

25,680

228,967

234,799

243,266

5,438,270

224,540

5,473,280

5,526,500

7,421,350

693,000

7,534,240

7,700,480

29/03/2018 Z Annex, 40 Hobson St

Days between readings

L98E00669 MPAN 1023472074772

300,310 Usage

TOTAL

2018-19 TOTAL 10,760

10/10/2019 04/02/2020

89,071

977,540

247,158

22,433

257,148

5,614,290

5,650,740

212,470

5,740,020

7,967,330

8,077,280

655,930

8,353,340

316,179

319,470

2019/20 TOTAL 9,559

Oct

Nov

Dec

Jan

Feb

Mar

13/04/2021

Total

330,187

19,117

109,195

179,004

2020/21 TOTAL 9,559

Apr

May

15/06/2021 June

8,840

9,519

6,710

July

Daily use Z County Hall, Hobson St E11BG37574

Readings

1014572329886

Usage

841,120

8,184

89,502

7,837 8,182

6,625

9,546

9,865

9,946

89,502

6,001

Daily use Masters Lodge KWh used since last reading E10BG71112

Readings

1012801526763

Usage

27,439

302,035

54,877

27,439

5,824,600

214,950

6,080,640

429,900

214,950

8,615,710

647,160

9,371,600

1,294,320

647,160

307,226

308,455

308,740

Daily use Usage Lasdun - Dressing room 1014572207751

Max demand Kva

K97E61109

Low Rate 2

E18TK0027

KWh used since last reading

Siemens Meter Ops £320.75

Daily use Norm - Rate 1 KWh used since last reading Daily use 96,457 96,232

89,149

96,725

85,118

43,166

64,636

80,179

58,904

50,270

Kitchens - Basement 1030044613100

Max demand Kva

K07FB00584

Low

940,650

88,620

958,360

990,730

1,020,480

1,031,660

91,010

1,079,120

1,104,850

73,405

1,178,470

146,810

73,405

4,112,160

394,490

4,187,660

4,310,820

445,418

4,514,820

402,660

4,702,600

4,828,480

293,935

5,102,690

587,870

293,935

5,726

315

5,757

5,760

5,764

5,798

5,800

21,766

1,005

21,844

21,851

21,863

21,943

21,950

KWh used since last reading Daily use K07FB00584

Norm

5 Stairs (18A King St)

10128010835556

Z04E115675

Low

Z04E115675

Norm

Usage KWh used since last reading

33,155

32,793

28,333

29,488

26,779

27,731

25,698

30,573

33,665

26,469

Daily use VAC

30/06/2007

Sub meter from 6-16 King St

57858

6-16 King Street Shop

1014572481688

Mar 18

E06BG24258

Day

1127

Night

464.5

8,351 2,270

4,252 1,608

1,565,355

1,490,329

1,355,950

1,355,949

18 King Street Shop E11Z11542

Sustainable Life Cycle Value All building projects at Christ’s College should be evaluated to ensure that all decisions have led to sustainable outcomes that balance initial capital outlay against maintenance and operation (including energy use) costs. The RIBA Sustainable Outcomes Guide 2019 offers guidance on how this can be executed in practice: Life cycle costs play a pivotal role in the financial management of construction projects around the world. They allow critical decisions to be made regarding the relatively importance of capital and longerterm costs, which ultimately impact asset performance, longevity, disaster resilience and sustainability. In the context of climate change, there is growing evidence of unsustainable levels of running costs in buildings with highly complex services: their resilience in extreme future climates is also questionable. The insurance industry will need to respond to a building’ resilience and ability to withstand climate change. There is also compelling evidence of the significant economic benefits of low carbon and healthy buildings. The Urban Land Institute carried out a theoretical exercise of the potential savings of LEED Platinum buildings in the United States in 2005 which even then would total $60/sf savings over 20 years. In Australia a good NABERS rating has also been shown to increase the value and lettability of office buildings. Studies such as this are scarce, but a growing number of UK developers are at the forefront of defining the economic value of sustainability. See also the UKGBC Capturing the Value of Sustainability report, 2018. 134

Christ’s College Cambridge

2.2 Student Survey 2019

2.2.3 Comfort: Winter The building was designed to Building Regulations Approved Document L 2010, which has lower fabric energy efficiency standards that current regulations. The U value of the walls is designed to 0.23, with an overall air tightness of 6.5 (ore stringent than current standards). However, due to the compact nature of the rooms and the low volume to external area ration, the buildings are extremely well insulated and provide excellent comfort in colder months.

RESIDENT FEEDBACK WORKSHOP Location Date Time

Residents were generally satisfied with the temperature and are quality of their rooms in the winter, but some seem to be unaware of the fact that they can control the temperature through the thermostatic value of the radiator, and it seems that

Sunpath

were not functioning correctly. Common Room H some B Allen Centre, Middle Monday 24th February 2020 The rooms are naturally ventilated with supply air through the trickle 6:30 - vents 8:30or open windows. Extract is via the bathroom extract fan which is on at a constant background rate. Several residents seem to be unaware that the bathroom extract is functioning and

commented that an extract should be added. Please join residenthave Dean Dr Ian Archer and MICAfan project architect Jessie Turnbull for an evening workshop about your experiences living in the H B In future, we would ensure that more information is Allen Centre. This is an informal drop-in session to gather as much feedback communicated from the college to the students so that they as possible to understand how the H B Allen Centre is being used, and know how their room functions. This information was provided how the intended design functioning in the realised building. The session by the is contractor to the client in the form of simple Building User will be interactive and discursive. feedback reallyhow valuable us passed on Guides for eachYour space, but it is is unclear muchto was in understanding how thestudents. objectives of the building project have come to to the fruition. Models and drawings will be available, and your feedback will be recorded anonymously. We hope you can join us!

How do you find the temperature of your room in Winter?

How would you describe the air quality in your room in Winter? 7.69 %

54.8 %

17.24 %

43.96 % 12.09 %

9.89 %

47.33 %

1.10 % 13.19 %

5.49 %

“Sometimes need to open the window, but that’s fine.”

27.59 %

3.30 %

Post Occupancy Evaluation “It’s humid, but easily remedied air vents The HbyB the Allen Centre, Keble College or the window.”

8.05 %

23.08 % 26.37 %

“It’s not really ‘too hot’ but I never have the heating on and do often need to open my window.”

MICA

How much control do you personally have over the heating?

June 2020

“Air vents in windows allow for some airflow (could be more?) without making a draught.”

Please choose an adjective to describe the smell of the air in your room in Winter.

How would you describe the movement of air in your room in the Winter?

59.34 %

How would your rate the overall conditions in Winter?

69.32 %

27.47 %

21.59 % 15.38 %

9.09 %

0.00 %

1.14 %

Post Occupancy Evaluation, The H B Allen Centre

MICA

2.2 Student Survey 2019

2.2.5 Lighting The lighting in study bedrooms is generally in three types, specified by Ingine: – One overhead downlight at the entry vestibule area between the door and the en-suite – Two wall-washers that bring light down the wall opposite the bed, including the mirror – One overhead light above the window-seat – In addition to this, task lights specified by MICA are provided: – Bedside table for reading in bed – Angle-poise type lamp mounted to the desk – Where a kitchenette exists it has a locally controlled under cabinet light Lighting in the en-suite is covered in the section on en-suites.

How would you describe the overall lighting levels in your room? 4.55 % 19.82 % 21.59 % 43.18 % Task lighting in typical room

11.36 %

In this setting the curtain can’t completely cover the window and light goes in - blinds?

The lights are all LEDs for low power consumption, and all designed to a colour temperature of 3000 Kelvin, which is called “warm white”, similar to the colour temperature of an incandescent bulb. The residents were generally happy with the lighting in their rooms, although there were a significant number of comments about the colour temperature with all noting that it was too cold or clinical. Many also noted that the rooms were too bright and that they would prefer to have dimmable control of the lighting. The task lights were generally well received, although the bedside lamp was considered to be too low and too small by some residents.

How would you describe the levels of natural daylight in your room? 5.68 %

A very good amount of desk space

18.18 % 13.64 %

Sometimes (in the slightly smaller versio nof this room) hard to open under bed storage - but I don’t really need it!

45.45 %

“Harsh lighting is not very social in the evening.”

17.05 %

“Would be nice to have a dimmer or an option to not have full lights on.” How would you describe the levels of artificial light in your room? 4.55 %

Task lighting feedback workshop

How adequate is the lighting at your desk / study area?

How much control do you personally have over the lighting in your room?

19.82 % 21.59 %

5.68 %

43.18 %

11.36 %

13.64 % 43.18 % 26.14 %

6.74 %

26.97 %

48.31 %

17.98 %

Post Occupancy Evaluation, The H B Allen Centre

MICA

Post Occupancy Evaluation

The objective for post-occupancy evaluation is taken from the RIBA guidance on Stage 7 “In Use” phase of design activities and the RIBA Post Occupancy Evaluation Primer. POE should be viewed as a standard part of architectural services procured by Christ’s College for all future projects, so that the College can understand what went right, and what could be done better on the next project and gain useful insights from people who use the building every day. The design team will value the College’s feedback immensely and will build on close working relationship in all stages, so gaining feedback from the building users will be equally important. The team should work together to achieve the best outcome for the College’s projects. This begins by looking at a client’s motives for embarking on a project – their desired project outcomes. Evaluations of the completed product examines to the core of the client’s and occupants’ needs and fine tunes the way these are met by the building.

The architect and building services engineer who delivered the RIBA Stage 3 or 4 design work are typically the two specialists best placed to deliver POEs, but they can equally be delivered by disinterested third parties. POEs typically involve focus group interviews, in-person reviews of the building in-use, online surveys (with results compared against industry benchmarks) and forensic review of the metered energy and water use as well as light, CO2, temperature and VOC data within occupied rooms. The Building User Satisfaction (BUS) methodology is a UK industry standard for the online survey component of the POE, but others include the University of California BCE Survey, the Leesman index, or the Guide to Post Occupancy Evaluation by HFCE, AUDE and University of Westminster are also reliable, and bespoke surveys can also be used. POEs should conform to the BS 14110 (2023).

Post Occupancy (or Building Performance) Evaluations also help designers to close the performance gap: that of designed energy and organisational performance, and the actual measured performance of these areas. The more designers, clients and other members of project teams learn about how their buildings perform in use, the better their next buildings are likely to meet the complex needs of the clients and occupants, completing a virtuous circle of learning.

Output Report 2023

MICA 135

136

Christ’s College Cambridge

Universal Access

Output Report 2023

MICA 137

Universal Access

Kitchen and Upper Hall access

Recognising the need for equality in the built environment is critical to ensuring the long-term success of a building to allow for more academic voices to be heard and encourage a diverse mix of people to share ideas.

Current access issues

Many of the buildings a Christ’s College have stepped access into and around them. Due to the age of the buildings the staircases do vary in materials and layout. The height and depths of the steps are not uniform and neither is handrail provision, step markings or lighting. There are portable ramps for access into some of these buildings giving access to the ground floor. There is open step-free access from Hobson Street car park to the network of paths around external areas of the Christ’s College domus site. All of our proposed interventions have been viewed through the lens of access and inclusion. Bringing community and access groups to develop the brief and test ideas.

Access to Upper Hall lift within wash-up areas

Current accessible provision

The current access provision to Christ’s College is well documented on the website “Access Able” which provides detailed information about the public rooms within the college and step by step instructions which describe the experience (including any shortcomings) of all the public facing aspects of the College. This is a comprehensive audit that has been carried out we understand by the Cambridge University Disability Office. The full information is available by following the link below: https://www.accessable.co.uk/christ-s-college/access-guides/ Rather than reiterate the information that has already been so thoroughly documented, this masterplan focusses on interventions that could improve the current position.

Lift exit at first floor within back of house area

Entry points

The entry points to the college are largely step-free, including the Great Gate on St Andrew’s Street, Chapel Carpark, Hobson Street Carpark, North Lodge, and King Street service entrance. The entry from Christ’s Pieces has a small step at the gate. This is a secondary entrance used typically by students. Improvements could made by ensuring that all intercoms and card readers are positioned at accessible heights between 1100 and 1400mm above finish floor level.

OCR and Fellows’ Parlour Stairs

138

Christ’s College Cambridge

Level entrance to the Todd Building

Yusuf Hamied Centre Stepped entrance to the Todd Building

Step free access from this car park

Z X Hobson Street carpark

There are some stepped areas within Third Court which can be overcome by using the level path along the front of the Blyth Building.

Q Third Court

Blyth Building

Step free access from this car park

Fellows Building B

Chapel Car Park

Second Court

Chapel C O

Hall

N M

D E

First Court

L G

There is a ramp/slope located in the entrance to the Accessible Toilet in Second Court.

Canteen Cafe / Kitchen Bar

Lib g W or kin

H I Old Library

ra r

KEY (Dominant uses) Spiritual Study Eating Maintenance Accommodation E

Output Report 2023

Stair case

MICA 139

Universal Access

Master’s Lodge reception rooms

Landscape

The paths around college are generally in good condition, but First Court in particular has uneven paving. As the court is redeveloped through the introduction of ground source heat pumps, and the adjacent buildings are renovated, the pathways should be improved. This includes creating smooth, paved paths from the circular perimeter path to (at minimum) entrances to public areas including Staircase I, Portrait Room, Buttery, Bath Court, Senior Fellows Lounge, new seminar rooms and the library. The modifications proposed to Bath Court in Intervention 11 address the level changes at the library, which are essential to overcome, whether the existing building remains in place, or a new one is built.

Stairs to Old Common Room, Fellows’ Parlour, Hall Gallery

Second Court is relatively accessible to ground floor rooms currently including one of the few accessible bedrooms in an historic building in staircase E , as steps have been removed at the entrance door. Third Court contains some level changes which should be removed with gentle re-landscaping at the southwest corner, and an accessible ramp, ideally at 1:20 introduced into the sunken garden at the centre of the court, including a stable, paved route with no steps to the picnic benches at the centre. Our proposed intervention to the ground floor of Blyth, creating a new cluster of student-led spaces, includes creating step-free access through the building, linking between Third Court and the Fellows’ Garden. This can be achieved by reducing the ground floor of the whole building by approximately two steps (around 300mm) or ramping the landscape externally to meet the existing floor levels. Should the project come forward, this should be examined in detail.

Old Common Room Entrance

Public Spaces

A reasonable number of the public-facing rooms across the college are on the ground floor and have step free access. Their access may be compromised in other ways such as narrow or heavy doors, poor lighting, lack of visual contrast, poor acoustics etc., which are documented by Access Able. Hall Gallery

140

Christ’s College Cambridge

Seminar room 4

Music room

Yusuf Hamied Court

Lloyd Room Sosnow Room

Seminar rooms

Yusuf Hamied Centre

Training Room

Fellows’ Garden

Amenity RoomZ

Music room X

Lecture Theatre Middle Common Room R

Hobson Street Car

Lloyd Room

Junior Common Room

Park

TV Room Function Room

Third Court

Student services P

Laundry

Fitness Suite

Blyth Building

Squash Court

Fellows’ Building

Chapel

Chapel Car Park

Second Court

SCR Toilet

Formal Hall

Fellows’ Parlour

Hall gallery

First Court

Old Common Room Kitchen

Senior Fellows’ Parlour Law library Portrait Room

Upper Hall

Buttery

K I

Toilet Working Library

Seminar rooms Bodley Library

Accessible Multifaith room

Compromised Inaccessible

Output Report 2023

MICA

141

Universal Access

EXISTING SPATIAL & CIRCULATION ARRANGEMENT DIAGRAM

PROPOSED SPATIAL & CIRCULATION ARRANGEMENT DIAGRAM

THROUGH TO COLLEGE Options of remaining these at existing postbox location

PRINT ROOM

PRINT ROOM STAFF FACILITIES LODGE MANAGER OFFICE

ENTRANCE DOOR

RECEPTION DESK

PIGEON HOLES

STAFF FACILITIES

PARCEL STORAGE

LODGE MANAGER OFFICE

WAITING AREA

RECEPTION DESK

PIGEON HOLES

PARCEL STORAGE

WAITING AREA THROUGH TO COLLEGE

THROUGH TO COLLEGE

Places that have lifts and function well: – Yusuf Hamied Centre: a lift exists between ground and basement floors to service the Function Room which does function well, despite the lack of appropriate handrails and colour contrast to the external access. – Yusuf Hamied Court: the new lift serves the music room at lower ground floor and the new seminar rooms are located at ground floor. – Todd Building: the Yusuf Hamied Court unlocks step free access to the Plumb Auditorium and Sosnow Room. The bigger problems are rooms that are not on the ground floor and have no or compromised lift access. These include the following: – The library: a lift exists but it can only be used with supervision from librarians, and the route to approach it contains steps as well as narrow, steep ramps. This in theory provides step-free access to the upper Bodley and the exhibition space, but in practice this is not used. – Upper Hall: the main student dining room is on an upper level and while a lift exists it is not attractive and used. It is located within the active kitchen and accessed by a long ramp which appears to be steeper than 1:12, with no landings. – Fellows’ Parlour and Old Common Room: there is no lift access to these rooms. – Master’s Lodge: public rooms on the first floor are used for some College wide-events and do not have lift access.

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SECONDARY SECURITY GATE

ENTRANCE DOOR

PUBLIC VISITORS

SECONDARY SECURITY GATE

Key existing public spaces made accessible through step-free routes via interventions

– Old Common Room – Upper Hall – Bodley Library and exhibition space – Fellows’ Parlour

Existing private rooms made accessible through step-free routes via interventions

– X Staircase – R Staircase – P Staircase – C Staircase

New fully accessible buildings

– The library – The Nest – The garden pavilion – Blyth Student centre and pavilion

Christ’s College Cambridge

Yusuf Hamied Court

2 1

Yusuf Hamied Centre

Fellows’ Garden

Z X

Hobson Street Car

Park

Third Court

Blyth Building

Fellows’ Building B

Chapel Car Park

Second Court C

First Court Kitchen

L G K I

Illustration of areas improved through implementation of interventions Output Report 2023

Lift as part of proposed building Accessible areas at all floors

MICA 143

Universal Access

Example page from Access Able website on Christ’s College

Accessible Rooms There are currently only five accessible rooms (including two in the new Yusuf Hamied Centre) across the housing stock of Christ’s College out of 372 student rooms in total. This is a ratio of 1:100, which is extremely low, but perhaps not unusual in the context of historic Colleges. Current Building Regulations for new buildings call for one accessible room for every 20 new bedrooms, which would mean Christ’s should have 19 accessible bedrooms. This is perhaps an unrealistic target, but attention should be paid as each building renovation comes forward to look at where additional accessible rooms can be introduced at ground floor level. An example of this would be where Y ground floor becomes available: once the administration functions have been relocated from this ground floor, the generous rooms and corridors make this an ideal candidate for additional accessible rooms at ground floor, with the 22m2 rooms containing ample space for wheelchair use. Should the decision be made to include ensuites in the building renovation, these large rooms contain sufficient space for the introduction of at least one accessible ensuite. Introducing en-suites will entail a large amount of excavation to install the necessary below-ground drainage, which might make reducing the ground floor level to match external a more viable and attractive prospect.

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Where rooms on the upper floor of Todd have become step free due to the Yusuf Hamied Court lift, they should be evaluated as a high priority for conversion to accessible rooms to increase the range of rooms available across a variety of building types. We have not typically suggested that lifts should be introduced in blocks as a stand-alone project (whether student or fellows) where the upper floors are not currently accessible unless there are public rooms on the upper floors. In sensitive heritage buildings, a strong case needs to be made for an intrusive intervention, and the low numbers of people impacted does not necessarily make a strong case. In existing buildings, ground floor areas should be scrutinised thoroughly to ensure that they are used in the most accessible way, whether for public uses or for additional accessible spaces, including those for Fellows. We believe that step-free access should be provided by lifts associate with new buildings, which by proximity unlock upper floors of neighbouring buildings. Naturally, all new buildings should be fully accessible in compliance with Approved Document M: Access to Buildings.

Christ’s College Cambridge

Access Able website step by step guide to Christ’s College

Example of improved paving, visibility and legibility of historic courtyards

Example of accessible student bedroom in keeping with design as a whole

Access Able guide to the Christ’s College Porters’ Lodge

Output Report 2023

MICA 145

146

Christ’s College Cambridge

Phasing

Output Report 2023

MICA 147

£10-20m project (large)

Phasing New Build

2023

Refurbishment

Renewables and rewilding

Mapping Christ’s Future exercise 1st Court east Including Bodley

Bodley

2024

Design and planning lead Blyth temporary library

2025

1st Court L &N Including Porter's Lodge

1st Court M & O

Master’s Garden

2nd Court

New library

2026 C, D and E

2027

Phasing

First Court and Library

2028 Blyth pavilion

Fellows’ Building

2029 Blyth

A measured approach, maintaining beauty

This document provide a menu of projects from which the College can select, based on the agreed priorities over the coming years, in the order that best suits the needs of the staff, students and fellows. Some projects can be carried out without interfering significantly with college operations, but most would have significant impact: – Spatial: parts of the college would become inaccessible – Room numbers: reduction of student bedrooms, fellows sets or offices – Operations: impact on day-to-day functions like the kitchen and upper hall. – Enabling works: many projects would require enabling or temporary facilities to replace those that are displaced. We have provided two worked examples of how the college might execute the full spatial strategy over the coming decades, while maintaining alignment with carbon reduction goals and continuing core operations largely uninterrupted. The following phasing scenarios map out the spatial implications of the projects in sequence, including impact on rooms, and assumed working zones, as well as temporary relocation of uses.

2030

30% reduction in fossil fuel use Master’s Lodge inc octagon

Kitchens Upper Hall Bath Court

2031

Bly Fellows’ Garden

Design and planning lead-in

Bod

X retrofit

2032 Hobson Street admin/accommodation

Stevenson

2033

Z Annex

Hobson Street carpa

2034 P&Q

2035

Third Court

Y retrofit

Nest

2036

2037

Todd Building (Z)

Christ’s College 600th anniversary 4 Stairs including staffroom

Darwin garden

Pool house

2038

2039

Lasdun including lobbies

Chape

Chapel

Hall P

2040

2041

2042

Hall

Maintenance Building

Yusuf Hamied Court

2043

2044

2045

2046

2047

2048

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University of Cambridge net zero target Christ’s College Cambridge

Prioritisation The need for a larger library and additional, varied study space has emerged as the top priority from the consultation: we anticipate that this is the element of the spatial plan that the College will elect to build first, and therefore we have used the selection of the new library site as the jumping-off-point for each scenario. In addition to this we have considered the following: – Maintenance priority schedule: an estates plan is already in place, informed by the conditions survey carried out by Bidwells in 2012. We believe this remains valid and urgent to carry out repairs, as documented in the “Estates Management Plan”. As such, the prioritisation broadly follows this sequence. – First Court works: these works are well underway with G, H, I and K staircases under construction at the time of writing. In order to avoid abortive works, and to maximise the impact of improving the college and future-proofing for the installation of low temperature heat supply, these should be carried out as planned, while being informed by the retrofit principles of this report. As such, no new project commences construction until 2028 – Achieve the College carbon reduction commitments by 2030 and 2048: the college has committed to reduce reliance on gas by 30% by 2030. The method of achieving this is documented in

Output Report 2023

the Estates Departments “30 by 30” document. The College has also pledge to reduce Scope 1 and Scope 2 emissions by 2048, in line with the University of Cambridge. New construction projects are considered Scope 1 emissions, and as such must be offset by a reduction in other College Carbon emissions, to achieve net zero. This is covered in more detail in the carbon chapter. – Consider project disruption: informed by discussions with the College estates and maintenance personnel, and the key desire for the College to remain beautiful and enjoyable for the duration of the construction periods, works have been carefully sequenced to ensure that no part of the domus site is overly burdened with construction activity at any one time. – Student bedroom numbers: The estates department have advised that there is a float of around 20 student rooms within the existing hostels. Larger displacement numbers can be managed with temporary letting of additional hostels, but must be carefully planned at least one year in advance. We have explicitly flagged where this is exceeded, which is often the case with the renovation of larger buildings such as Blyth, Y, Stevenson, Lasdun and 4 Stairs.

MICA 149

£10-20m project (large)

Phasing New Build

The scenarios are mapped in a timeline with present day (2023) at the top, and 2048, deadline for net zero greenhouse gas emissions at the bottom. The left column represents new build projects, the middle column contains refurbishments, and the right column contains renewable energy installations. The size of the icons corresponds approximately to the cost scale of projects, and the colours correspond to the dominant use of the building concerned, as noted in the legend. On the far right of the diagram the number of displaced fellows, students and offices is noted alongside the year. Retrofit projects are broadly shown as one year in duration, while major new builds are two years, and other smaller new build are one year. This should naturally be tested as each project is fleshed out in more detail through the design process associated with each individual project, or cluster of projects.

Refurbishment

Renewables and rewilding

1st Court east Including Bodley

2023

Bodley

2024

Design and planning lead Blyth temporary library

2025

1st Court L &N Including Porter's Lodge

1st Court M & O

Master’s Garden

2nd Court

New library

CDE PVs

2026 C, D and E

2027

First Court and Library

2028

Scenario 1 New library completed 2028 Operations consolidated/resolved in 2035 30% reduction in energy following completion of Fellows’ Building in 2029 Net zero in 2038 following final GSHP install in Darwin Garden

Blyth pavilion

Fellows’ Building

2029

Blyth PVs Fellows’ Garden

Blyth

2030 Master’s Lodge inc octagon

Kitchens Upper Hall Bath Court

2031

Design and planning lead-in

Bodley PVs

X retrofit

2032 Hobson Street admin/accommodation

Stevenson

Y PVs

The execution of scenario 1 assume that a new build library is planned for the existing working library site. The new design requires a two-year lead-in period for the full RIBA Stages 1-3 design followed by a planning submission and conservative estimate of determination period. This allows construction to commence in summer of 2028, and is preceded by the relocation of the library to a temporary home. There are several options for the temporary library including: 1. Refitting the ground floor of Blyth (loss of 11no student rooms) 2. Demountable pavilion in the Fellows Garden (loss of garden amenity) 3. Temporary structure on stilts in the Hobson Street Carpark (loss of a small number of parking spaces) 4. Keeping the historic book collection in storage and using the Bodley library to house the working library collection (insufficient reader space)

2033

Any of these scenarios could be explored further as part of the full design for the library, should this library site be selected. We have mapped this scenario assuming that Blyth is selected, as it offers a home that can house all the books, and approximately match the current seating provision of the working library, and offering least disruption to the College site, with manageable student numbers displaced.

2040

In 2025 the test case installation of GSHPs is carried out in the Master’s Garden, as it offered a significant area but is relatively contained from the rest of the site. The duration of these works would be around 4 months, including reinstatement of landscaping. This is covered in further detail in the GSHP Case Study in Chapter X. While being a major inconvenience to the Master, this minimises impact on the rest of College operations.

Z Annex

Hobson Street carpark

2034 P&Q

2035

Third Court

Y retrofit

Nest

2036

Todd Building (Z)

2037

4 Stairs including staffroom

Darwin garden

Pool house

2038

2039

Lasdun including lobbies

Chapel PVs

Chapel

Hall PVs

2041

2042

Hall

Maintenance Building

Yusuf Hamied Court

2043

2044

2045

2046

2047

2048

150

Christ’s College Cambridge

Temp library: Opt 3 2 storey prefab in carpark (parking below)

all/interior/enabling project)

Temp library: Opt 2 Prefab in garden

dium)

large)

Temp library: Opt 1 Refit Blyth Loss of 11no student rooms

Renewables and rewilding

Future proofed pipework route to Chapel Carpark (installed 2021)

MASTER’S GARDEN 256MWh

Master’s Garden

1st Court west deep energy 2nd Court retrofit

Loss of 6no student rooms, 2no Fellows sets, 2no offices

CDE PVs

Existing gas boilers serving First Court

First Court and Library Temp library: Opt 4

Repurpose Bodley

2025 activities

First court, library boilers, new heating pipework to Chapel Carpark Blyth PVs

Library/study

Fellows’ Garden

Operations

Should this be unacceptable, the newly renovated first court would need to be powered from an ASHP located in the Chapel Carpark. This is a critical path to complete in 2025 prior to the demolition of the existing library, and with it, the boilers that supply First Court.

Bodley PVs

Social/wellness Accommodation Y PVs Hobson Street carpark

Fellows rooms

£0.5-2m project (small/interior/enabling

£0.5-2m project (small/interior/enabling project) Third Court

£2-10m project (medium)

£10-20m project (large) £10-20m project (large)

Darwin garden

Renewable installation Renewables and rewilding

Refurbishment

Chapel PVs Bodley

temporary y

Master’s Garden

Hall PVs

1st Court M & O

No other works are planned during the library construction due to the disruption that the project will cause in a highly visible and central location within the domus site.

Completion of the library

1st Court east Including Bodley

1st Court L &N Including Porter's Lodge

The retrofit of C, D and E staircases is underway during the early stage of the construction project. This building was relatively recently renovated in 2015, and the heating system has been operating at lower flow temperatures of 55°C (temperatures compatible with GSHP supply) since January 2023 with no adverse impacts reported, making it a suitable candidate for re-supply from GSHP once the windows have been retrofit with slimline double glazing, preserving the existing wooden frames of the Grade 1 listed building. Further insulation could be fitted to the walls and roofs, if it is found upon inspection the 2005 renovation is found to be insufficient.

2nd Court

CDE PVs C, D and E

Upon completion of the library in 2028, the next priority is the Fellows’ Building, which is in urgent need of renovation due to electrical and fire safety deficiencies. 11No of the 16no Fellows housed in this building could be relocated to the newly vacated generous ground floor of Blyth, and the others to existing spacious student rooms. The displaced students in turn would be housed off-site. The fellows Building would be resupplied from GSHP once renovated, which allows the college to achieve the 30% reduction in greenhouse gas emissions two years ahead of schedule.

First Court and Library

Blyth pavilion

Output Report 2023 Fellows’ Building

MICA Blyth PVs

151

Phasing

Deep energy retrofit X

Loss of 10no fellows rooms

Blyth pavilion as temporary dining hall +2no student rooms

+2no offices (tutorial) -11no student rooms

Existing Kitchens

Temporary marquee kitchen

Refit kitchens and Upper Hall, Bath Court

2031 activities

Existing Upper Hall

Beyond the Library Once Blyth is vacated again, it becomes available for the full deep energy retrofit and addition of the garden pavilion, which will ultimately house the wellness centre (formerly the inadequate sick bay in P), multifaith room and tutorial office, in addition to creating a café with generous seating area, enjoying views of the garden year-round, and affording informal social study as a complement to the library. This renovation frees up three student rooms in P and two in Y to balance student numbers, but still results in a net loss of 41 rooms, which would require carefully planning ahead on student numbers and accommodation. In 2030 the master’s tenure comes to an end, making it the ideal time to refurbish the lodge. As the Master is required by statute to remain on site, this might practically be done in phases over two years: the Master and family occupying the First Court lodgings for their first year and moving back into the full suite of spaces at the end of the following year. The new Blyth pavilion could offer temporary SCR space for the duration of the First Court works. Alongside this, the Butler’s Pantry would be improved, in anticipation of the upcoming kitchen refit in 2031. In the same year the Fellows’ Garden GSHP is installed, supplying the newly renovated Blyth with renewable energy.

Hall fully accessible, create an extension above the kitchen and improve the façade to the new library on Bath Court. The kitchen is changed from gas to electric (an important step in decarbonising) and the layout reconfigured to improve the hot pass and improve operations. The kitchen would be housed temporarily in Second Court, delaying the reinstatement of landscape following the GSHPs. Blyth again demonstrates flexibility by offering a very attractive interim dining hall, so students would have a high-quality experience while Upper Hall is incapacitated. This interval between the completion of the library and the commencement of the kitchens is not ideal, but has been structured to allow the urgent retrofit of the Fellows’ Building. Should the college decide that the improvement of kitchens and Upper Hall take priority over the Fellows’ Building, this sequence could be reappraised. The deep retrofit of Stevenson happens simultaneously, another large building which displaces 34 students, 10 fellows and two offices, requiring careful forward planning. Other smaller retrofit projects continue following that year-on-year, with the associated GSHPs being installed as the buildings that they serve have been retrofit to suit and come back online.

In 2031, the kitchen and upper hall is completely overhauled, including the modifications to Bath Court to make the Upper

152

Christ’s College Cambridge

Aerial view of Christ’s College, 2023

The construction of the new building on Hobson Street carpark commences in 2033, with the associated GSHPs, preceded by a two-year lead-in for design and planning. It is assumed that by this time, the centre of Cambridge will be largely pedestrianised including Hobson Street, with a congestion charging zone and improved public transport that makes commuting by car less attractive, and the need for carparking has naturally attritioned. Thus, there is no provision for the reprovision of carparking. Because this project does not displace student rooms, fellows’ sets or offices, it is assumed that other smaller scale renovation projects can continue simultaneously with careful planning. Once complete in 2035, the administration functions formerly housed in V, Y and Z can move into the new building, freeing up around 22 student rooms. This creates enough capacity that the renovation of Y can be handled within the existing stock (including the 20 off-site float rooms). This completes the urgent maintenance repairs, and the retrofit column then moves to the buildings that are in relatively good condition currently including Todd, 4 Stairs, Lasdun (last renovated in 2008). The two remaining spaces to be retrofit – Chapel and Hall – while large spaces are extremely limited in terms of allowable interventions due to their historic status. However, we recommend re-insulating the roofs, and installing

Output Report 2023

underfloor heating compatible with GSHP supply for a more comfortable experience that delivers heat directly to the occupants. These two are both ideal candidates for solar panels, which is covered in more detail in Pathway to Net Zero. The new build projects of the Nest and the Garden Pavilion are shown with dashed lines representing the fact that they are dependency-free and can be moved up or down the sequence without impacting other adjacent projects, to align with the college’s needs and donor interest. The college effectively reaches operational net zero in 2038 with the installation of the final GSHPs in Darwin Garden to serve 4 Stairs and Lasdun, at which point the cycle of renovation begins again in 2042. It is prudent to assume that buildings require a light-touch retrofit of interior elements every 15-20 years, and major refurbishments every 30-40 years, so even Yusuf Hamied Court will be in need of attention by this time.

MICA 153

£10-20m project (large)

Phasing New Build

Refurbishment 1st Court east Including Bodley

2023

Bodley

2024

2025

Renewables and rewilding

Design and planning lead Temporary parking

New library on Hobson Street carpark

1st Court L &N Including Porter's Lodge

1st Court M & O

CDE PVs

2026 C, D & E

2027

Master’s Garden

Hobson Street Carpark

Finished building links at upper floors Parking phase-out

Fellows’ Building

2nd Court

2028

Scenario 2 New library completed 2028 Operations consolidated/resolved in 2031 30% reduction in energy following completion of Fellows’ Building in 2028 Net zero in 2036 following final GSHP install in Darwin Garden

Working Library refit as adminisatation

Stevenson

2029 X Stair

2030 Master’s Lodge inc octagon

Kitchens Upper Hall Bath Court

Bodley PVs

2031 P & Q stairs Blyth pavilion

2032

Blyth PVs Fellows’ Garden

Blyth

Y PVs

This second scenario is drawn up based on the premise that the Hobson Street site is selected for a new library as the priority project. The new design requires a two-year lead-in period for the full RIBA Stages 1-3 design followed by a planning submission and conservative estimate of determination period, with Stage 4 design and tender occurring concurrently. This allows construction to commence in summer of 2028, and because the existing library remains in place, there is no requirement for a temporary provision. Temporary provision for carparking is, however, made: optimising spaces available on the Chapel carpark and freeing up space within the Lasdun Building undercroft, as well as improving shower facilities and bike parking for active travel. Although the commencement of construction is not contingent upon the completion of First Court we have assumed the same start date. Similarly, the Master’s Garden and considerations of renewable energy for first court mirror that of Scenario 1. Construction commences in 2028, along with the associated GSHPs on the site, with retrofit of C, D and E happening concurrently. Because this site does not displace any rooms, it is considered acceptable for other renovation projects to occur simultaneously, so the high priority Fellows’ Building takes next precedent in 2027, linked to the Second Court GSHPs, leading to a 30% reduction in fossil fuel use by 2028 (one year ahead of Scenario 1), simultaneous with the library completion.

2033

Y Stair

Third Court

2034 Todd Building (Z)

2035 4 Stairs including staffroom

Darwin garden

Nest

2036 Lasdun including lobbies

2037

Chapel Pool house

2038

2039

2040

Chapel PVs

Hall PVs Hall

Maintenance Building

Yusuf Hamied Court

2041

2042

2043

2044

2045

2046

2047

2048

154

Christ’s College Cambridge

uild

Refurbishment

Renewables and rewilding

1st Court east Including Bodley

Alternative administration: repurpose Todd GF/1F

Bodley Design and planning lead Blyth temporary library

Master’s Garden

1st Court L &N Including Porter's Lodge

Loss of 13no student rooms

2nd Court

1st Court M & O

CDE PVs

New build library ongoing

C, D and E

First Court and Library

Deep retrofit of Fellows’ Building

Fellows’ Building

Blyth pavilion

Loss of 16no Fellows sets

Deep energy retrofit Master’s Lodge

Blyth PVs

Add 3no Fellows sets

Fellows’ Garden

Blyth

Temporary Master’s accommodation off site

SECOND COURT 314MWh

Master’s Lodge inc octagon

Kitchens Upper Hall Bath Court Design and planning lead-in

Bodley PVs

Improved pantry

X retrofit

Temporary SCR in Portrait Room

Stevenson

Hobson Street admin/accommodation

Y PVs

Refit as administration ongoing

Hobson Street carpark

Z Annex

2027 activities

2030 activities P&Q

Library/study

£0.5-2m project (small/interior/enabling project) Third Court

Y retrofit

Nest

£2-10m project (medium)

Operations

Todd Building (Z) £10-20m project (large)

Social/wellness 4 Stairs including

Darwin garden

Renewable installation

staffroom

Pool house

2023

2024

New Build

Refurbishment

Accommodation Lasdun

1st Court east Including Bodley

including lobbies

Fellows rooms Chapel Design and

Renewables and rewilding

Chapel PVs Bodley

planning lead Blyth temporary library

1st Court L &N Including Porter's Lodge Hall PVs

Master’s Garden

2025 2nd Court M&O The consolidated staffHallaccommodation 1st isCourt allocated to the existing The refit of Kitchen and Upper Hall has a great impact on College New librarywhich undergoes a deep energy retrofit project library building, operations in 2031, and suggestions are made for the location CDE PVs alongside the reconfiguration starting in 2029. Note that this of a temporary marquee kitchen on Second Court, with SCR 2026 Maintenance does not requireBuilding the same two-year lead-in it effectively dining remaining in the Portrait Room, and the SCR becoming C, D andbecause E preserves the existing building (while requiring permission for used simultaneously with the Hall as a temporary student dining 2027 change of use). ThusYusuf it is able to commence sooner and complete hall, providing an interim condition which might even surpass the First Court and Library Hamied in 2031, solving the administration dispersal problem. This project typical experience for a student. Court does not displace any rooms, so other renovation projects can 2028 continue concurrently, particularly in remote parts of the College. The works to Bath Court also take place at this time, completing Fellows’ Blyth Building the outdoor social space associated with the Buttery drawing by pavilion Blyth PVs As with Scenario 1, in 2030 the master’s tenure comes to an end, both students and staff to this central location within the Domus 2029 Fellows’ Garden making it the ideal time to refurbish the Blyth lodge. As the Master is site. required by statute to remain on site, this might practically be The subsequent projects continue in maintenance priority 2030 in phases over two years: the Master and family occupying done sequence, with the independent small new build projects of the Kitchens for their first year Master’s the First Court lodgings and moving back into Nest and Garden Pavilion slotting in as College needs and donor Lodge inc Upper Hall octagon Bodley PVs Bath Court the full suite of spaces at the end of the following year. In this interest emerges. 2031 instance the PortraitDesign Room could provide the temporary SCR for and X retrofit planning lead-in the duration of the First Court works. Alongside this, the Butler’s The college effectively reaches operational net zero in 2036 (two Pantry would be improved, in anticipation of the upcoming years ahead of Scenario 1) with the installation of the final GSHPs 2032 Stevenson kitchen refit in 2031.Hobson Street in Darwin Garden to serve 4 Stairs and Lasdun, at which point the admin/accommodation Y PVscycle of renovation begins again in 2040. 2033

Z Annex

2034

Output Report 2023

P&Q

Hobson Street carpark

MICA 155

156

Christ’s College Cambridge

Output Report 2023

MICA 157

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