Atlantic focus fall 2019

ATLANTIC ATLANTIC

Canada Green Building Council 2019 ISSUE, Atlantic Chapter - CaGBC Regional Publication /

FOCUS

GREEN GABLES VISITOR CENTRE Tradition upheld in pursuing LEED Gold THE NEW GENERATION WAREHOUSE

A first for the CaGBC Zero Carbon Building standard

WE NEED DIVERSE ENERGY SOURCES

to Meet Atlantic Canada’s Diverse Energy Needs

RETROFITTING FOR A LOW CARBON FUTURE Reducing our carbon footprint might just be the most important thing we’re not talking about

2019 | ATLANTIC FOCUS

1

DISTRIBUTE D BY DOBBIN SALE S info@dobbinsales.com 2

2019 | ATLANTIC FOCUS

ATLANTIC

Message from the Atlantic Chapter of the CaGBC

Thanks to our Sponsors

Atlantic Chair and Regional Director’s Report Welcome to the third annual issue of SABMag Atlantic FOCUS. We are very excited for the opportunity to highlight some of the green building leaders in our region and hope that their projects will inspire you.

The Canada Green Building Council’s Atlantic Chapter strives to be part of the continued evolution of the sustainable building industry through education, awareness, networking, and advocacy. Our mission and focus on sustainable development challenges our industry to innovate and push the envelope of green building design and performance.

The Chapter continues to make the business case for green buildings throughout the region. Build Green Atlantic, and our regular lunch and learns, roundtables, advocacy work, and workshops continue to provide our membership with educational content, and access to a network of experts and allied professionals, as well as information on relevant products and services.

We are thrilled to include in this edition stories of exciting green building work happening in our region. Private developers, institutions, government departments, and municipalities are all featured in this issue showing a range of project types. We are also pleased to include some thought leadership articles about energy and retrofits.

A special thank-you to our volunteers, members, partners, and friends in developing and providing content for this magazine.

We want to continue to strengthen, promote, and celebrate our green building community. We hope you enjoy this edition of Atlantic FOCUS and look forward to your story ideas for the next edition.

Lara Ryan Regional Director, Atlantic Chapter Canada Green Building Council

Rochelle Owen Executive Director, Office of Sustainability Dalhousie University Chair, CaGBC Atlantic Chapter Leadership Board

2019 | ATLANTIC FOCUS

3

architects 18 Botsford Street Suite 100 Moncton, NB E1C 4W7 t. 506.857.8601 f. 506.856.9729

www.architects4.ca

Architects Four is proud to have been part of UNB’s new home for the Kinesiology faculty. Congratulations!

4

2019 | ATLANTIC FOCUS

See a digital version of CaGBC Atlantic FOCUS https://www.cagbc.org/ Click on Chapters/Atlantic/Atlantic FOCUS magazine.

20

In this issue 17

26 8

Green Gables Visitor Centre Tradition upheld in pursuing LEED GoldLEED Gold

12

Gold level unlocked - Rural Newfoundland community sets sights on – and achieves – sustainable building goal

14

We Need Diverse Energy Sources to Meet Atlantic Canada’s Diverse Energy Needs

17

20

FALL 2019

A centre for healthy & sustainable living - New Kinesiology building on UNB Fredericton campus inspires students and the community Saltstone - Solterre Design’s decades of experience in green architecture faced a new challenge

+

24

Pomerleau: Two long-term health projects designed for LEED certification

26

The new generation warehouse A first for the CaGBC Zero Carbon Building standard

28

Retrofitting buildings to reduce our carbon footprint might just be the most important thing we’re not talking about

Printed on Domtar Husky Opaque text offset paper.

ATLANTIC

A joint publishing project of the Atlantic Chapter - CaGBC and SABMag. Address all inquiries to Don Griffith: dgriffith@sabmagazine.com Published by Janam Publications Inc. | www.sabmagazine.com | www.janam.net

Cover: Green Gables Visitor Centre. root architecture inc.

Photo: Julian Parkinson.

2019 | ATLANTIC FOCUS

5

Message from Thomas Mueller - CaGBC Welcome to Sustainable Architecture and Building Magazine’s Atlantic FOCUS, an opportunity to showcase green building achievements in Nova Scotia, New Brunswick, Newfoundland and Labrador, and Prince Edward Island.

Following the Canada Green Building Council’s annual Building Lasting Change (BLC) conference this past May, this publication is yet another way we as an industry can connect on our efforts to help Canada build green and meet its 2030 carbon emissions reduction targets.

The Atlantic provinces are delivering on that innovative state of mind. For example, East Port Properties Wilkinson Warehouse is a Zero Carbon industrial warehouse that was part of the Zero Carbon Standard pilot project. It demonstrates how it is possible to complete sustainable projects with highly efficient performance, even in an industrial setting.

I am impressed with the innovation that has come from the region over the past year. Key industry events such as Build Green Atlantic demonstrate an increased focus on the core themes we explored at Building Lasting Change in Vancouver: the need to reduce emissions from the building sector with enhanced resiliency and improved health and well-being for all.

This publication will highlight these projects and many others. I hope that as you read this issue, you will come away inspired by our industry’s momentum, growth, and impact. This progress will continue, with more innovation through LEED v4.1, CaGBC’s Zero Carbon Building Standard, and the integrated offering of tools and services through GBCI Canada. While CaGBC continues to drive programs of national significance, our valued regional chapters will continue to share their expertise and celebrate regional achievements as we work toward a successful transition toward a greener, lowcarbon future.

As a national organization, the CaGBC is committed to transforming green Canada’s buildings, communities and cities.

We push the boundaries on innovation by championing new green building technologies and standards, publishing market research, and advocating for the policies needed to accelerate the path to low carbon buildings and large-scale retrofits.

Locally, our Chapter in Atlantic Canada is on the ground working alongside our members to achieve our mission. Conversations have been focused on the undeniable value green buildings provide—as investments, in lower energy costs, and as protection against future risks of climate change. To achieve these benefits, innovation in building design, construction, and products must continue to be a state of mind rather than a nice to have.

Projects like the Green Gables Visitor Centre, the Marystown YMCA, the UNB Kinesiology Building and Saltstone House illustrate the potential to build high performance buildings when there is owner motivation to do so.

Thomas Mueller President & CEO Canada Green Building Council

Established in 1955, CBCL provides engineering, geotechnical and environmental services.

www.CBCL.ca Halifax | Sydney | Saint John | Fredericton Moncton | Charlottetown | St. John’s Happy Valley - Goose Bay | Ottawa

6

2019 | ATLANTIC FOCUS

YOUR LEED V4 QUICK-REFERENCE SITE | LANDSCAPING | RAINWATER HARVESTING Molok® Deep Collection™ System Wishbone Industries Ltd. STRUCTURE & EXTERIOR ENVELOPE Alumicor Building Excellence Architek SBP Inc. Arriscraft Bailey Metal Products Ltd. Euroshield® LiveRoof Nedlaw Living Walls Radon Environmental Thames Valley Brick & Tile

CANADIAN DIRECTORY OF PRODUCTS AND SERVICES FOR SUSTAINABLE, HIGH-PERFORMANCE BUILDING

https://sabmagazine.com/product-directory/ THERMAL & WINDOWS Demilec, Heatlok Soya Eco Insulating Glass Inc. EuroLine Windows Inc. Inline Fiberglass Ltd. Innotech Windows + Doors LiteZone™ Insulating Glass Pollard Windows Inc. Tech-Crete Processors Ltd. INTERIOR FINISHES CBR Products Columbia Forest Products Dulux/PPG Forbo Flooring Systems Nora Systems, Inc. Masonite Architectural Shaw Contract Group

ELECTRICAL | PLUMBING | HVAC | RENEWABLES Acuity Brands Aqua-Tech Elkay Fantech Sloan Valve Tempeff North America Termobuild Viessmann Manufacturing Company Inc. GREEN DESIGN SUPPORT + PROFESSIONALS Canadian Precast Prestressed Concrete Institute Diamond Schmitt Architects FABRIQ architecture Pomerleau RJC Engineers Sustainable Forestry Initiative

designs created for life

15 Victoria Rd | B2Y 2V5 | Dartmouth | NS 902.407.6660 | 902.223.7442 ktaylor@rootarchitecture.ca

Grid-tied and off-grid energy experts www.sage-energy.ca

rootarchitecture.ca

902-306-1200 hello@sage-energy.ca 2019 | ATLANTIC FOCUS

7

GREEN GABLES VISITOR CENTRE Visitor centre respects tradition in pursuing LEED Gold

Mark Twain called Anne of Green Gables,“ The sweetest creation of child life yet written.” He sent the author Lucy Maud Montgomery a letter of praise, congratulating her on her writing. This was over 100 years ago and, ever since, the story of Anne has captured the imaginations of people from all over the world.

By Kendall Taylor

1

Green Gables, the name of a 19th-century farm in Cavendish,

As one moves away from the courtyard to the north, the restrictions

Prince Edward Island, is the setting for the popular Anne of

become less and less to where the location of the visitor centre had little

Green Gables novels by L.M. Montgomery.

to no restrictions on the eventual design. This inspired the idea of moving Phase II away from traditional timber framing to utilizing mass timber and

The property has become one of the most visited Federal

nail laminated timber (NLT) elements.

Parks in Canada, and an iconic tourist destination. A 2015 study revealed a need for more exhibit space and enhanced

Phase II was conceived as a collection of farm buildings with the lobby

amenities on site to not only tell the story of Anne, but also

becoming the main element that ties it all together. The lobby has been

that of her creator, Lucy Maud Montgomery. Parks Canada

designed as an ‘outdoor space’ providing shelter from the sun and rain and

acted on the study by creating an extensive program which

features the ‘tree’ structure. L.M. Montgomery loved climbing trees as a

would be constructed in three distinct phases.

child and so the tree structure adds some focus to the lobby and whimsy which fits with the character of Anne.

Phase I was completed in the spring of 2017. Phase II, consisting of an exhibit hall, gift shop, ticket/information

The building is pursuing LEED Gold with special attention to the use of

areas, offices and new washrooms and lobby, was completed

local materials, and will be 100% powered by renewable energy. The use of

in the spring of 2019. Phase III was to decommission the

mass timber was a natural progression from the traditional timber framing

temporary gift shop in Phase I and transform it into a new

used within the barn and Phase I addition. We wanted to continue using

cafe and commercial kitchen.

exposed wood to fit with the aesthetic goals of the project, and to provide a more sustainable approach to the structural frame.

Parks Canada envisioned a building respectful of the scale and vernacular on site but also wanted a facility that was

Approximately 85% of the columns, beams and trusses are glue-laminated

modern in its style and function. The site is broken down into

timber (glulam) and are left exposed within the facility. All of the glulam is

three zones. The courtyard surrounding the Anne of Green

slotted to receive hidden steel connection plates where possible to further

Gables house is the most restrictive and has protocols in

reinforce the modern look and feel. Connections use a combination of

place limiting what can be changed.

wood screws, dowels and through bolts.

8

2019 | ATLANTIC FOCUS

ENERGY AND WATER CONSERVATION

By Chris Ruddick, CBCL Limited Energy and daylight modelling was employed at early stages of the project which helped to guide decisions regarding building orientation, envelope, etc.

A dedicated outdoor air system (DOAS) using variable

energy recovery ventilators and variable refrigerant flow (VRF) heat pumps was selected and, when combined with solar PV on the southfacing pitched roof, shows approximately 41% energy cost savings over a traditional system. The VRF system also utilizes minimal ductwork and is able to blend with the architecturally open nature of the building.

Both HVAC and lighting are controlled by digital controls systems and the building’s energy and water use are tracked using energy meters and flow sensors. Water savings of approximately 42% are realized using ultralow-flow fixtures.

Project Credits Client Parks Canada with PSPC providing Design Reviews and Project Management Architectural Design, Interiors and Prime Consultant root architecture inc.

Construction Administration Sablearc Studios Engineering – Traffic, Civil, Structural, Mechanical and Electrical CBCL Limited Landscape Architecture Vollick McKee Petersmann & Associates Ltd. Contractor: Phase One and Three FitzGerald & Snow (2010) Ltd. Phase Two Williams Murphy & MacLeod (1993) Ltd. Photos Julian Parkinson; photo 4 by root architecture inc.

3

1. The Exhibit Hall and multi-purpose and utility room (far left) of Phase II. Glazing in the curtainwalls and skylights is Prelco low E 272.

2. The approach from the parking lot to Phase II, consisting of an Exhibit Hall, Gift Shop, ticket/information area, offices, new washrooms and lobby. Part of the project was clad with Prodema Panels, distributed

by Sound Solutions. Using raw forest materials managed in socially and environmentally responsible ways, these maintenance-free panels feature attractive real wood veneers on phenolic cores.

3. The lobby, the central hub of Phase II, has been designed as an ‘outdoor space’ with natural light admitted through clearstorey windows.

The central ‘tree’ structure adds some focus to the lobby, and and makes reference to L.M. Montgomery’s love of climbing trees as a child, which also fits with the character of Anne.

4. The walls are built of staggered 2x4 and 2x6 studs with 2x10 top and bottom plates to reduce thermal bridging.

4

2 2019 | ATLANTIC FOCUS

9

6

8

Existing Phase I building

9

7 2

Floor plan 1 2 3 4 5 6 7 8 9

Tickets Lobby Exhibit hall Staff kitchen Staff meeting room Multi-purpose room Mechanical Washroom Gift shop

1 2

6

3 5

4

The nail laminated timber (NLT) roof panels, which span 3.8m and are 2m wide, get their strength from the nails that fasten individual pieces of dimension lumber, stacked on edge, into a single structural element.

The engineers, CBCL Limited, designed the panels to act as a structural roof diaphragm. Apart from their aesthetic qualities, the NLT panels were made within the local community using local 2x4 materials which offers fast, repetitive fabrication and ease of erection on site.

Kendall Taylor is the Principal at Root Architecture Inc. 5. Glulam trusses form the gable roofs of the gift shop and exhibit areas. Nail laminated timber (NLT) panels were used to eliminate the traditional use of purlins to create an uncluttered appearance within the main spaces.

6. The Gift Shop. The gable and shed roof forms, and scales of the buildings, fit the context of rural PEI but are presented with a modern international perspective.

7. The lobby at the Exhibit Hall.

6

7

5 10

2019 | ATLANTIC FOCUS

NBK TERRACOTTA CLADDING; MAANJIWE NENDAMOWINAN BUILDING, UNIVERSITY OF TORONTO MISSISSAUGA; ARCHITECT: PERKINS + WILL; IMAGE: LISA LOGAN

SOUND SOLUTIONS INNOVATIVE ARCHITECTURAL PRODUCTS 389 DEERHURST DRIVE BRAMPTON, ONTARIO TEL: 1.800.667.2776 OR 416.740.0303

WWW.SOUNDSOLUTIONS.CA 2019 | ATLANTIC FOCUS

11

GOLD LEVEL UNLOCKED Rural Newfoundland community sets sights on – and achieves – sustainable building goal

By Mandy Cook The Marystown YMCA is the first building in Newfoundland and Labrador to achieve gold level certification under the LEED Canada for New Construction and Major Renovations (2009) ratings system.

1 2

The $13-million community aquatics and recreation centre is owned by the Town of Marystown, N.L., and operated by the YMCA. It is located on the main road through Marystown, a community of approximately 5,500 people located on the Burin Peninsula on the rural southern coast of Newfoundland.

Immediately adjacent to the centre is a large public green space and outdoor recreation area, which includes a soccer pitch, running track, softball diamond and a small skate park. A shallow meandering river runs parallel to the back of the building, separating it from the soccer pitch. The landscape design strives to naturalize the grounds, blending the site into the surrounding environment while providing pedestrian access to the outdoor recreation areas.

Once inside the 3,070-square-metre building, members and visitors walk through a double-height public lobby. The bright, expansive space is the location of the member service desk and provides views into the aquatics area and up toward the second level walking track and fitness mezzanine. Continuous strip windows on the front elevation flood the area with natural light.

Also opening onto the lobby is a 52-square-metre multipurpose room with a dedicated washroom; the YMCA uses the space to operate a childminding service for its members.

The aquatics centre contains a six-lane, 25-metre swimming pool, a shallowwater leisure pool and an on-deck steam room. The remainder of the facility features an indoor walking track, a 370-square-metre strength and conditioning centre and a 360-square-metre multipurpose gymnasium. There are three change rooms serving the aquatics and fitness programs: one male, one female and one family change room with enclosed cubicles and a common locker area.

There are barrier-free toilet and shower facilities in each change room, including a large private shower and washroom in the family changing area.

4

12

2019 | ATLANTIC FOCUS

3

Green features In terms of environmentally sustainable initiatives, 10

the facility boasts numerous features, including geothermal heating and cooling systems, an energy

4

recovery system for the pool, daylight harvesting and movement-activated lighting controls, LED lighting fixtures in most spaces, low-flow plumbing fixtures and on-site stormwater management and

6

2

7

1

primary sewage treatment.

8 3

Innovative mechanical design played a large

10

4

5

4

5

role in achieving the LEED gold certification.

The mechanical design achieved a combined 26 points under the Water Efficiency and Energy and Atmosphere categories, including all 19 available points under Optimize Energy Performance.

The building heating was achieved by three, 30-ton water-to-water geothermal heat pumps connected to a vertical borehole field with 18 closed-loop wells.

The coefficient of performance of the geothermal heat

5 Level 1 1 Multipurpose gym 2 Child minding 3 Kitchen 4 Bathroom 5 Steam room 6 Office 7 Lobby 8 Service desk 9 Lockers/wet area 10 Aquatics

9

pumps is 3.0. Pool ventilation and dehumidification is provided by a rooftop Dectron unit with waste

approximately $1.3 million. After much lobbying, the town was able to secure

heat recovery from the dehumidification process

additional funding from the Atlantic Canada Opportunities Agency so the project

used to temper fresh air and contribute to pool

could proceed.”

water heating. Additional pool water heating is provided by the geothermal system.

The project was successfully brought to completion and opened to the public in February 2016. Immensely popular with the residents of Marystown and

Building cooling is provided by four rooftop

surrounding communities, membership fluctuates between 1,100-1,400 people,

packaged air conditioning units, with each unit

depending on the time of year.

having a hot water heating coil fed from the geothermal heat pump system. All ventilation is demand controlled using carbon dioxide sensors to match fresh air requirements with occupancy levels; locker room ventilation is provided by a heat recovery unit. Domestic water is pre-heated from the geothermal heating system with indirect-heated domestic water tanks. The Actual Energy Use

Gold goal And while members continue to provide overwhelmingly positive feedback about the light-filled aquatics centre, conditioning centre and gymnasium – and the functional layout of the building overall – it is the town’s staff and councillors who are the facility’s biggest champions. After all, it was the collective vision of the municipal government and staff members to not only provide the much-needed fitness facility to the residents of Marystown, but to also achieve gold level

Intensity for the entire facility is 428 kilowatt hours

certification from the Canada Green Building Council.

per square metre.

“Much of the funding came from the provincial government, which mandates

Budget challenges

that buildings strive for LEED silver,” said Mr. Symonds. “From the outset, Mayor

Richard Symonds, lead architect and project manager, LAT49 Architecture Inc., first became involved with the Town of Marystown in 2009 when he completed an audit of their existing swimming pool and arena. In 2011 LAT49 Architecture was

Sam Synard and the town council were adamant that if silver was the minimum requirement, then Marystown would aim for gold. They wanted to prove that it was possible for a rural Newfoundland community to achieve a high level of sustainability for their recreation facility and they wanted to be the first to do so.”

Mandy Cook is a contributor based in St. John’s, Newfoundland and Labrador.

approached by the Town of Marystown to complete a concept design and conduct feasibility work for a new wellness centre, which led to the detailed design and construction of the Marystown Y. “The budget was always a challenge on this project as the approved cost-shared funding from the Department of Municipal Affairs did not match the expectations of the community,” said Mr. Symonds, whose office is in St. John’s, N.L. “Therefore, the facility underwent a major redesign and downsizing after the concept design phase to reduce the cost. The estimated cost could not be lowered enough to meet the budget and the tender value ended up exceeding the funding by

Project Credits Architect and prime consultant: LAT49 Architecture Inc. Mechanical and electrical engineering: Core Engineering Inc. Structural engineering and LEED AP: Morrison Hershfield Ltd. Civil engineering: Exp Services Inc. Landscape design: Tract Consulting Inc. General contractor: Pomerleau Inc. 1. Newfoundland Styro provided the EPS Insulation which can help achieve LEED credits in many categories including Regional Materials, Materials and Resources, Low-Emitting Materials, and Energy and Atmosphere.”.

2. Trail connection and existing bridge to exterior amenity space. Part of the project was clad with Prodema Panels, distributed by Sound Solutions.

3. View of main lobby and conditioning centre.

4. Aquatics centre. Lighting controls are the WSX Series (Wall Switch Sensor and CMR Series – Ceiling Mount, Line Voltage Sensors) from Sensor Switch.

2019 | ATLANTIC FOCUS

13

We Need Diverse Energy Sources to Meet Atlantic Canada’s Diverse Energy Needs

By Derek Estabrook, Vice President Marketing & Business Development, Heritage Gas Limited Climate change is real and we’re already feeling the impacts here in Atlantic Canada. Since the majority of the world’s GHG emissions are produced by the use of energy, addressing climate change will require us to change how we meet our energy needs. Here in Atlantic Canada most of our energy is used for transportation, building energy, and industrial processes1 (see Chart 1).

Chart 1 We meet these needs with a diverse mix of energy sources. Sixty percent of

Meeting more of our energy needs with electricity makes

our energy demand is met with refined petroleum products - like gasoline,

sense in some cases – electric light-duty vehicles, electric

diesel and fuel oil. Electricity meets 30%. Biofuels, natural gas and propane provide the remaining 10%2 (see Chart 2).

heat pumps for space heat, and LED lighting are great examples of where electricity can replace higher emitting fuel sources. However, electricity is not a practical energy source for some other applications, including industrial processes that require high temperature heat, or heavy fleet vehicles. In these sectors, switching from oil to natural gas can or other lower-emitting fuels can significantly reduce GHG emissions.

There are three key pathways to reduce the GHG emissions from buildings in Atlantic Canada.

IMPROVE ENERGY EFFICIENCY: The first pathway is to improve the energy efficiency of buildings to enable the building to achieve the same

Chart2

energy performance with less energy. Energy efficiency can be improved in many ways, including upgrading the

Approximately 3/4 of GHG emissions in Atlantic Canada are produced

building envelope, installing high-efficiency HVAC or heat

from just 3 sources - transportation (33%), electricity generation (30%) and heating and cooling for buildings (10%)3.

pump systems, switching to LED lights, or co-generation

To meet our diverse energy needs in a low carbon future, Atlantic Canada will need to use energy more efficiently and transition to a mix of cleaner energy sources like clean electricity, renewable energy, and lower-carbon fuels. While electricity will continue to be an important part of our energy mix in Atlantic Canada, electricity alone can’t meet all of our energy needs as we transition to a low carbon economy. In fact, using more electricity won’t necessarily reduce GHG emissions because of the high carbon intensity of electricity generation, especially in Nova Scotia and New Brunswick.

14

2019 | ATLANTIC FOCUS

to generate both thermal energy and electricity on-site.

SWITCH TO CLEANER ENERGY SOURCES: The second pathway is to switch to cleaner types of energy. At least in the short term, not all of the energy used by buildings will be renewable, so switching from higher-emitting fuels like oil to lower-emitting energy sources like natural gas can reduce GHG emissions by 35% or more.

REDUCE THE CARBON INTENSITY OF FUELS: The third pathway is to reduce the carbon intensity of the fuel used in the building by blending renewable natural gas with conventional natural gas, or generating electricity on-site with solar photovoltaic systems to reduce the overall carbon intensity of the electricity used by the building. Renewable natural gas can be produced by upgrading biogas from organic waste from municipal green bin programs, landfills, or farm waste.

While the use of coal and oil for electricity generation in Atlantic Canada will likely decline over the next few years as more renewable energy like hydro and wind is produced, there are limits to the amount of renewable electricity that can be added to the grid while keeping electricity rates affordable and the electric grid stable. Becoming a greener region won’t be as simple as switching to electricity to heat buildings, power vehicles, and run industrial processes.

There is a better way forward in Atlantic Canada.

The region will need to use energy more efficiently, make the electricity grid cleaner, transition to lower-carbon fuels, and make all renewable energy, including renewable natural gas, a bigger part of our overall energy mix.

Sources: 1 Statistics Canada Table: 25-10-0029-01 – Total Primary and Secondary Energy, 2017 2 Statistics Canada Table: 25-10-0029-01 – Total Primary and Secondary Energy, 2017 3 Canada National Inventory Report, Table 11 – 2016 GHG Emission Summary for N.S., N.B., P.E.I., Nfld. & Labrador

Rethinking Sir Charles Tupper Medical Building & Clinical Research Centre Over 30 Building Improvements implemented, including:

Energy Exchange Loop

for energy recovery across building systems

Variable Flow Lab & Fume Hood System

for improved energy and end-use performance resulting in:

50% Reduction

in Annual Water Usage

2,800 Tonnes eCO2

in Annual Greenhouse Gas Emissions Reductions 2019 | ATLANTIC FOCUS

15

Proud to have been the prime HVAC contractor for the new Kinesiology Building on UNB Fredericton Campus, and the supplier and installer of the earth tubes.

*Responsible

*Reliable

*Professional www.northsideventilation.com

Roofing contractor of the UNB Kinesiology Building

• Atlantic Canada’s leading roofing company

• Industrial, Commercial, Institutional

• New construction and maintenance contracts

www.atlanticroofers.com

Halifax, N.S. Sydney, N.S. Moncton, N.B.

p: (902) 429-0701 p: (902) 562-8090 p: (506) 383-8733

Mechanical & Electrical Consulting Engineers www.onsa.ca

LEADERS IN ATLANTIC CANADA’S

SUSTAINABLE BUILDING SYSTEMS

COMMISSIONING Proud commissioning agent for the

UNB Fredericton Kinesiology Building Tell us about your next project 506.852.7520 16

2019 | ATLANTIC FOCUS

A CENTRE FOR HEALTHY and SUSTAINABLE LIVING The new Kinesiology building on UNB Fredericton campus inspires students and the community to pursue a greener and healthier way of living. The new Kinesiology building on UNB’s Fredericton campus was designed and constructed with the intention of being a leader in sustainability.

The new Kinesiology building is on track to be the 1st WELL Building Standard certified building under the education program in North America, and the building is also on track for Leadership in Energy and Environmental Design (LEED) Gold certification.

1 Sustainable attributes Some of the sustainability features of the building include:

• Occupancy sensors and lighting, demand control

• Earth tubes for fresh air preheat/precool

strategies

• Heat wheel energy recovery

• Living wall

• Natural ventilation

• Removing inefficiencies from attached building

• Displacement ventilation in the teaching auditorium; where cool air enters

(Currie Center), adding thermal storage to Kinesiology

through the stair risers and displaces the warm, stale air towards the ceiling

• Rainwater harvesting

where it leaves the room

• Vegetative roof

• LED lighting throughout the building

• Solar-powered bicycle shelter outside the building

• Daylight harvesting; where 73% of the building is natural light despite

• Repurposing of trees that were cut down in

being two sides into a hill, and daylight sensors were added to classrooms

construction

2019 | ATLANTIC FOCUS

17

Earth tube technology: The Earth Tube system consists of 8 underground tubes, buried below the frost line where temperature remains relatively constant. The steel cylinders above ground take in fresh air and the 8 tubes preheat (for winter) or precool (for summer) the entire fresh air requirement entering the building.

Currie Center integration: All heating and cooling energy for the new Kinesiology building is fed from the connected Currie Center building.

This energy sharing is permitted by two 10,000 gallon thermal storage tanks, visible to occupants through a mechanical room window. This energy sharing provides

2

more efficiency to the Currie Center and in turn conserves energy that the Kinesiology building would otherwise have to output.

1. Kinesiology building by Architects Four Limited.

2. Air intake for the earth tubes supplied and installed by the prime HVAC contractor, Northside Ventilation.

Glazing provided by Prelco Inc. 3. The living wall. Baillargeon wood doors by Masonite Architectural are used for the interior, along with Elkay drinking and bottle filling stations.

4. The vegetative roof, and all other roofing, was installed by Atlantic Roofers.

5. Solar bike rack.

3

4 18

2019 | ATLANTIC FOCUS

Natural daylight harvesting & rainwater harvesting: The building achieves 73% natural light, a large feat considering 2 sides of the building are built into a hill.

The natural light helps save on energy costs and in turn improves the morale and well-being of the occupants.

The rainwater harvesting system collects water from the vegetative roof surfaces, and is reused throughout the building to flush toilets and urinals.

Connecting occupant health with building health: As a faculty that is committed to promoting health and wellness, the new Kinesiology building is a living lab

5

that helps with this goal. The sustainable aspects of the building are important and show their worth through the impact on occupant wellness and the conversations that spark from being inside the building.

The building was a collaborative effort between designers, builders, stakeholders, and future occupants to build something everyone is proud of. The new Kinesiology building is leading the way in creating a culture for healthy and sustainable spaces.

Nikole Watson, Energy Coordinator, University of New Brunswick.

6

6. The central staircase and atrium. Maritech Commissioning Works Ltd. was the commissioning agent for the building. The main fixtures used are BLT Series – Low Profile Recessed LED Luminaire from Lithonia Lighting, and nBRG – nLight Bridge – 8 Port from nLight. Photos 1, 3, and 4 courtesy of Rob Blanchard, UNB.

2019 | ATLANTIC FOCUS

19

Saltstone

1 1. The North elevation. PROJECT CREDITS: Owners: Wendy and Craig Jansen Architect: Solterre Design (David Gallaugher, Jordan Willett, Jennifer Corson) Contractor: Sawlor Built Homes Structural Engineer: Doncaster Engineering Civil Consultant: Sherwood Enterprises Passive House Consultant: Passive Design Solutions Photos: Acorn Photography

Solterre Design’s decades of experience in green architecture faced a new challenge with this exciting project located in a secluded cove in Saint Margaret’s Bay. The owners, Wendy and Craig Jansen, came to Solterre with some big challenges including; a newly acquired 2.5 acre site that had no access to drinkable water and a desire to meet the German ‘Passive House’ energy standard AND the ability to be net-zero operational energy.

Passive strategies for site positioning, elongating the compact form along east and west line, allowed for the living spaces to have southern exposure (and southwest views), while the utility, maintenance and bathrooms were able to be efficiently planned along the north wall, requiring less daylight and window area.

While Wendy and Craig wanted a home able to accommodate their two grown daughters and other family to visit throughout the year, they also wanted their main living spaces to be all on one level to accommodate their aging-in-place for decades to

As is often the case, the challenges became the strongest elements

come. Working closely with the team at Sawlor Construction,

and drivers of the design. Meeting the demanding energy efficiency

Solterre ensured that all the steps were carefully coordinated

targets of Passive House calls for simple compact building forms. The

and that the Passive House targets were met (although the

lack of access to a consistent potable water source drove the direction

project is not certified, it did meet the Efficiency Nova Scotia’s

of the design to collect and store rainwater in an underground cistern.

requirements for the Passive House grant).

The Solterre method, proposing several different schematic designs, ensures that the client is an integral part throughout a collaborative

The blower door test of 0.41 AC per hour (at 50 Pa) was a

design process.

great result for the Sawlor team as the challenging topography and a large number of glazed units, and four additional

Sketches and renderings as well as line drawing are used to help clients

exterior vents for two propane fireplaces, created a number of

understand design intent and visualize spaces throughout the process.

envelope penetrations requiring special attention. The Sawlor

During schematic design this strict water requirement led to a dynamic

team had taken Passive House training with Natalie Leonard at

butterfly roof which terminates at a rainwater collection point at a

Passive Design Solutions which meant that the architect-builder

central breezeway. The breezeway provides a sheltered arrival and

team working seamlessly to ensure that all design details,

frames a first glimpse of the dramatic coastal views through the

including energy performance requirements were executed at

opening. A central scupper brings rainwater down in the centre of

the highest level.

the breezeway through the rain garden on its way to a 6,000-gallon underground storage cistern. The simple horizontal building forms and

Saltstone has become a favourite at Solterre, as the design

banding of the siding evokes the strong horizon line of the ocean.

team felt that the challenges of this project resulted in not only a high-performance passive house, but a home exceeding Craig

The long sloping roof lines rise up to the dramatic views down the coastline in a careful and elegant gesture. The site, challenged with predominantly rock outcroppings, did have a sloping site towards the southwest and the ocean views.

20

2019 | ATLANTIC FOCUS

and Wendy’s expectations.

1 Garage 2 Workshop 3 Bathroom 4 Bedroom 5 Living 6 Viewing deck 7 Dining 8 Kitchen 9 Laundry/utility 10 Entrance hall 11 Deck 12 Planter screen PV for panels

9

3 6

Concrete water feature 4

10

3

5 7

8

1

Main level

36 x 36 Step stone

11

Floor plans Recirculation pump 12

2

2. Installation of the 1,500 gallon Roth Multitanks with pre- and post-rainwater filters and UV, supplied by Roth North America.

3. The breezeway looking out to the sea between the garage and the house.

4. Triple-glazed, Passive House Certified, supreme casement windows from Kohltech Windows & Entrance Systems.

2 3 4 PROJECT STATISTICS • The home meets the strict Passive House energy standard (third party confirmation by Efficiency NS.) • R-values double code requirements, Slab R34, Wall R53, Roof R100 • Passive solar design with window glazing tuned per cardinal direction • Triple-glazed PH certified windows • Two propane fireplaces were included for ambience and as a backup heat source in case of power outage • Tested Airtightness 0.41ACH @ 50 pascals • Air source heat pump • 90% efficient Zehnder HRV (German import) • Net-zero with 12.2 kW grid-tied PV system • Cistern: 4 – 1500 gallon Roth Multi-tanks

2019 | ATLANTIC FOCUS

21

Septic Tanks • Water Cisterns Pump Tanks • Holding Tanks Rain Water Harvesting Multi Usage • • • • • • Kohltech is proud to be one of only a handful of Passive House Certified window and door manufacturers in North America.

Our dedication to energy-efficiency allows us to supply companies like Sawlor Built Homes the best triple-glazed windows to complete their Passive projects.

Multi Layer

Multi Coverage

Inner layer of FDA approved virgin HDPE, two inside layers of PE for improved stability, plus one outer layer of black and UV-stabilized PE Lifetime* corrosion protection and 5 years of labor insurance Strongest & heaviest poly tank on the market No water for backfilling required Low profile 100% watertight

Our multi-layered tank construction, consisting of virgin material surrounded by 3 layers of protection.

Visit page 20 to see our window collaboration on their Saltstone Project. *see warranty for details

kohltech.com Named one of Canada’s Best Managed Companies in 2019 22

2019 | ATLANTIC FOCUS

BEST TANK. BEST WARRANTY. BEST SYSTEM.

Roth North America

www.roth-america.com 866-943-7256

The winners of the 2019 Canadian Green Building Awards

NATIONAL SPONSORS

The Awards presentation of the 2019 Canadian Green Building Awards, the annual program of Sustainable Architecture & Building [SABMag], took place in Vancouver on May 27, 2019 where the winning firms were recognized. We especially thank our sponsors who make the Awards possible.

ARCHITECTURAL CATEGORY SPONSORS

1. Muhammad Kashif (right) of Category Sponsor Mitsubishi Electric Sales of Canada presents the Commercial/Industrial [Large] Award for the Evolv1 Building to Dr. Andrea Frisque of Stantec.

1 6

2. Jennifer McGill (right), of National Sponsor Masonite Architectural, presents the Institutional [Large] Award for the Okanagan College Trades Renewal and Expansion Project to Michael Leckman of Diamond Schmitt Architects Inc. 3. On behalf of National Sponsor The Canadian Precast Prestressed Concrete Institute, juror Ron Kato (centre) presents the Commercial/Industrial [Small] Award for the Sechelt Water Resource Centre to Brian Wakelin (left) and Robert Drew of Public Architecture + Communication.

2

7

4. Ron Kato (right), representing Category Sponsor Enbridge Gas Inc., presents the Existing Building Upgrade Award for the Wellington Building Rehabilitation to David Clusiau of NORR Architects and Engineers.

5. On behalf of National Sponsor, the Canadian Precast Prestressed Concrete Institute, juror Lisa Bate (left) presents the Technical Award for the City of Calgary Composting Facility to Megan Leslie of Stantec.

3 8

7. On behalf of Category Sponsor Inline Fiberglass, juror Lisa Bate (left) presents the Residential Building [Large] Award for the Duke Apartment Building to Mark Ostry (second left) and Russell Acton (far right) of Acton Ostry Architects Inc. Pete Edgar of building owner Edgar Development Corp. is second right.

4

9

Visit https://sabmagazine.com/ awards/winners for more details.

5

6 Jennifer McGill (centre) of National Sponsor Masonite Architectural presents the Institutional [Small] Award for the Radium Hot Springs Community Hall and Library to Shelley Craig and Jordan Edmonds of Urban Arts Architecture Inc.

For details on sponsoring the 2020 Canadian Green Building Awards contact dgriffith@sabmagazine.com.

8. Representing National Sponsor the Canadian Precast Prestressed Concrete Institute, juror Ron Kato (right) presents the Existing Building Upgrade Award for the Bank of Canada Renewal to Zeina Elali (left) of Perkins+Will and Colleen Sullivan of the Bank of Canada.

9. Lindsay Oster (left), principal of Prairie Architects Inc. receives the Institutional [Small] Award for the Building Blocks on Balmoral at Great West Life from Jennifer McGill of National Sponsor Masonite Architectural.

2019 | ATLANTIC FOCUS

23

Pomerleau, a leader in LEED

1 1. Aerial view of the long-term care facility in Gander, NL, which is seeking LEED Silver certification.

2. Artist rendering of the reception area of the NL Health Partners long-term care facility.

For Pomerleau, building goes beyond infrastructure; we help build healthier and stronger communities for generations to come. That’s why, in 2005, we were one of the first construction companies to become a member of the Canada Green Building Council (CaGBC).

We have carried out and will continue to collaborate with our clients and partners on Leadership in Energy and Environmental Design (LEED®) registered projects.

In less than a decade, more than 110 of Pomerleau’s projects have

Our team of over 40 LEED-accredited professionals supports

type. Furthermore, over 90% of the waste generated during the

clients seeking certification and provides them with a process and

construction was diverted from landfill. These features secured a

methodology that conforms to the requirements defined by LEED

LEED Gold certification for the building in 2014 and its construction

certifying organizations. Together with our clients, we help define

helped revitalize Halifax’s South End.

obtained or are awaiting LEED certification. More than a fifth of these are in the Atlantic Canada region, of which many are moving beyond the basic LEED certification. In fact, some have already received or are seeking LEED Platinum certification.

The Grainery Lofts is a perfect example of a green building that aligns form and function. The building has a solar field rooftop and solar wall which allows for the preheating of outside air. Its carbon footprint is 30% to 40% lower than a typical building of its

sustainability goals, provide cost and feasibility data, leverage state-of-the-art green building techniques and deliver sustainable

Caring made better

buildings that stand out.

Two long-term care facilities in Gander and Grand Falls-Windsor,

We share our clients’ commitment to building a more sustainable

Newfoundland and Labrador are among our current projects seeking LEED certification (specifically LEED® v4 - Healthcare:

future for all and LEED certification is key to achieving this vision.

Pomerleau remains actively involved with the CaGBC and continues to innovate by consistently integrating cutting-edge ecological practices into its operations.

LEED BD+C Silver Certification). Pomerleau was awarded the contract for the design, construction, financing and maintenance of these 60-bed facilities in April 2019 by Newfoundland and Labrador’s Department of Transportation and Works. The facility

“At Pomerleau, we believe we need to lead by example. The added

in Gander will be designed and constructed to accommodate a

value provided by green buildings in both the medium and long term

potential expansion of approximately 105 additional beds.

justifies the required investment. The benefits are immediate and include a reduction in heating, air conditioning and ventilation costs, and improved air quality. All these contribute to the well-being and comfort of building occupants, help increase productivity and reduce absenteeism,” explains Krista Gill, Pomerleau’s Sustainability & Commissioning Manager.

2

24

2019 | ATLANTIC FOCUS

The sustainability strategy developed by NL Healthcare Partners (NHLP) focuses on measures such as energy efficient building systems, including a thermally enhanced building envelope, exhaust air heat recovery, and high efficiency air-to-water heat pumps.

To foster a sense of community, residents and visitors will have access to outdoor areas where they can relax and interact with one another and the environment. Additional green spaces will be made available to staff members.

This sustainability strategy has been developed through an integrated approach with input from all Pomerleau’s design team and will be managed and coordinated by the team’s LEED Consultant, WSP Canada Group Limited.

“The process included an integrative design approach that brings the design team, Pomerleau and key specialized trade partners to the table early in the project. This approach strengthens our ability to anticipate the necessary steps to ensure a strong sustainable 3. A model room in the NL Health Partners long-term care facility.

project throughout the entire project. Each team member brings valuable experience and contributes to the sustainability

The innovative design of the building will transform it into a living organism: supplying outside air with a high ventilation

conversation throughout every phase of design and construction,” says Abigail MacEachern, Design Manager for Pomerleau.

effectiveness, maintaining thermal comfort conditions year-round,

Jeremie Poirier, Pomerleau’s Project Manager for both facilities, says

minimizing air contaminants, and providing access to daylight and

that no efforts will be spared to help the client secure LEED silver

views of the outdoors. These integrated strategies will positively

certification certifications for these projects. Reinventing construction

impact residents’ health and quality of life.

and sustainability are much more than just about efficiency; they are

Conservation of surrounding natural areas is also a design priority

fundamental to building strong and healthy communities.

and will provide a habitat for wildlife and promote biodiversity. At

For more on Pomerleau’s sustainability leadership, https://

least 30% of each site will be covered by vegetation.

pomerleau.ca/en/8/sustainable-development

2019 | ATLANTIC FOCUS

25

THE NEW GENERATION WAREHOUSE

A FIRST FOR THE CAGBC ZERO CARBON BUILDING STANDARD

By Edgar López, Sustainability Engineer, East Port Properties

BUILDING FEATURES • Insulated tilt-up concrete sandwich panels for continuous insulation (R20) and reduced infiltration as well as a ballasted EPDM roof (R40) • Vertical-storing dock levellers to remove what is typically a permanent thermal break and to reduce

Having developed and managed LEED certified warehouses since 2008, 355 Wilkinson Avenue began as a question: “How do we make warehouses even better?”

infiltration at bay doors by allowing them to sit tight against the floor • Transoms and skylights with diffusing filters for daylighting

Part of the answer came from tracking of our tenants’ utility bills. In

• Central in-floor heating supplied by six Nordic

warehouses, heating is typically the highest operating expense – so we set out

air-to-water heat pumps (and a back-up/peak load

to make that zero. East Port Properties then partnered with the CaGBC to be

condensing boiler) distributed by ECM circulators

a pilot participant for the Zero Carbon Building standard. This was the only

• Net-metered PV system (83.8kWDC) sized to offset

pilot project of this asset class and the only one in Atlantic Canada.

the cost of the central heating system

355 Wilkinson Avenue is the first of a series of high-performance multi-tenant

• Controls for the fair allocation of central heat – when

warehouse buildings located in Dartmouth, NS. The building is a 65,000-ft2

a bay door opens, circulators in that zone stop and

warehouse completed and fully occupied in the spring of 2018, it has now

corresponding tenant-metered overhead gas heaters

earned Zero Carbon Building – Design certification.

make up for the door operation heat loss

PV system offsets the cost of the central heating system.

Vertical-storing dock levellers sit tightly against the floor to reduce infiltration at bay doors.

26

2019 | ATLANTIC FOCUS

Truefoam’s Trueroof EPS insulation was chosen as a cost effective way to meet the higher thermal resistance requirements on the roof.

The project uses six Nordic ATW Series air to water heat pumps by Maritime Geothermal Ltd.

MAKING THE CASE WITH EMPIRICAL DATA The basis of the design originated from a property of very similar composition which East Port Properties developed and managed.

Having access to tenant and house utility bills for this building helped us identify the real-world thermal performance of the building envelope. We developed an in-house feasibility model using RETScreen and used the known utility data to fine-tune the model. Next we modified the model to match the features and details corresponding to 355 Wilkinson Avenue. The results of this model guided us in sizing the PV system to achieve the primary

With a few months of data available to make our case, the CaGBC worked with us to verify the building’s performance.

Future developments on Wilkinson Avenue, however, are limited by net-metering rules. Since all our proposed buildings fall within the same electrical distribution zone, the 100kWAC cap applies to the aggregated PV systems of any net-metered building. 355 Wilkinson Avenue currently shares the cap with 495 Wilkinson Avenue (which is also seeking Zero Carbon Building – Design

objective of a zero central heating bill.

certification). The PV system in each of these two buildings is

A third-party energy model which we commissioned for incentive

51kWAC and 49kWAC respectively for a combined maximum

programs and the CaGBC revealed something much different. A prescriptive input requirement in the model inflated the thermal energy demand intensity to nearly twice our own estimate. Without data and experience to support investment premiums in efficiency,

limited by custom export limiting devices with thresholds set at output of 100kWAC. As such, all subsequent buildings will be required to have an export limiting threshold of zero – which complicates the business case. East Port Properties will continue to develop high performance warehouses nonetheless.

a project’s journey for higher performance could very well end here.

The insulated tilt-up concrete sandwich panels.

2019 | ATLANTIC FOCUS

27

Retrofitting for a low carbon future Retrofitting buildings to reduce our carbon footprint might just be the most important thing we’re not talking about.

By Charline Cormier and Chris Russell If we’re serious about the transition to a low carbon future or meeting our commitments under the Paris Agreement, Atlantic Canadians need to talk about the carbon savings potential of our existing buildings.

and reducing carbon impact. These studies also focus on the building holistically and not just single disciplines (Architectural, Electrical and Mechanical). By bringing a whole building design approach to these studies, we maximize the potential for carbon savings and energy reduction over the life of the building.

Why retrofit for carbon?

Reducing greenhouse gas emissions is critical to mitigating the effects of climate change. Existing buildings are responsible for a significant portion of Canada’s emissions.

Even if every new building were designed for net zero energy, we’d still be faced with the significant carbon footprint of North America’s existing building stock. Most of our existing buildings will still be in use fifty years from now, so retrofitting them is key to decarbonizing the built environment.

We need to change how we think about existing building projects. Evolving government priorities and regulations will

Industrial

encourage and eventually require retrofits for carbon savings

Buildings

and energy efficiency, and the private sector will follow suit. But

Electricity

that still begs the question, just how do we make yesterday’s

Agriculture

buildings less carbon-intensive and what are realistic targets for

Other

retrofitting?

Transportation

Building retrofits present design teams with complex challenges.

But retrofits can result in a renewed asset that also produces less carbon, uses less energy, improves occupant health and wellbeing, and reduces costs to operate.

Canada, as a signatory to the Paris Agreement, is targeting reductions in greenhouse gas emissions for 2030 and buildings are a significant part of that reduction. This new Agreement will strengthen the effort to limit the global average temperature rise to below 2°C and pursue efforts to limit the increase to

New construction

1.5°C. Retrofitting government buildings is an important step in

Already built in 2019

demonstrating leadership in emissions reductions.

It’s in this context of targeted reductions that real estate management company Brookfield Global Integrated Solutions (BGIS) has undertaken existing building retrofit studies for key buildings in their Canadian portfolio. A large number of the buildings are in Atlantic Canada. BGIS engaged Stantec to provide detailed energy assessments, building performance modeling, financial analysis, and performance engineering services, to support major upgrades to the facilities they operate. Stantec has completed 18 Atlantic Canadian (over 30 in Canada) studies for large office buildings (mostly) that range in size, vintage and

A summary of a typical Carbon Retrofit study is: 1 | Existing Building Condition Assessment: Complete a detailed study of energy use by the existing building and its systems.

2 | Energy Model Development: Develop a detailed digital model calibrated to available utility data following ASHRAE Guideline 14 and aligned with actual and potential future building operations.

heritage status.

3 | Baseline Generation: Capture current and potential baselines.

4 | Energy Efficiency Measure Selection: Work with the project

Carbon Retrofit studies are an important first step in assessing the

team to identify EEMs suitable for the building based on performance

possibilities for retrofitting, and the range of strategies available

improvement, lifecycle cost and replacement schedule.

for achieving carbon reduction. In detailed feasibility studies on

5 | Energy Conservation Measure Analysis: Perform detailed energy

more than 30 BGIS-managed buildings across Canada investigating

simulations to assess the impact of each EEM.

design concepts that will bring each building closer to net zero

6 | Financial Analysis: Complete a lifecycle cost analysis to evaluate

carbon operations. These studies include 25-year Life Cycle Cost

the cost of each EEM, testing against operations, maintenance and

Analysis (LCCA) of the buildings existing operating state and

replacement as well as energy costs. Allow for fuel escalation and time

compared with recommendations for improving performance

value of money.

28

2019 | ATLANTIC FOCUS

showing the results of the above analysis and the recommendations

Energy Efficiency Measure selection in Existing Buildings

agreed to through multiple client workshops and review cycles.

We can reduce energy consumption in buildings with more

7 | Recommendations and Reporting: Complete detailed report

Good communication is important between all team members because understanding the existing buildings and making collaborative

efficient technology and educated behavior. Consider the energy pie and focus on the largest consumers.

informative decisions is key to the success of the studies. Having face to face meetings and multiple conference calls with building operators and occupants is essential to achieve an accurate and mutually desirable outcome. This process allows the team to develop effective energy-saving strategies and to arrive at meaningful results and recommendations, which support decision makers.

Studies like this are vast, complex, time-consuming undertakings, requiring multi-disciplinary collaboration and expertise in everything from building envelope to efficient mechanical systems to the cutting edge of modeling software. But they are critical in achieving our carbon targets. To find best option for carbon reduction within budget technology must be embraced. Leveraging digital tools from parametric design simulation to solar and geothermal modeling software is key. By doing so, we can modulate all options for systems, performance and cost. It will take many energy such as this to kickstart what could be one of the most significant undertakings on the road toward a Zero Carbon future.

Consider the grid, it can help or hurt

Carbon Retrofit studies Goals

Fuel switch to electricity:

Carbon Retrofit Studies fit into the larger federal mandate that

In “Clean Grid” areas, we must remove combustion from buildings

intends to significantly reduce the greenhouse gas (GHG) emissions

and switch to electric boilers, ground-source heat exchange and

in Canada by 2030. The Government of Canada has committed to

ground-source heat pumps.

reducing greenhouse gas (GHG) emissions from its buildings and fleets by 40% below 2005 levels by 2030. In response to this, Public Services, and Procurement Canada (PSPC) is undertaking actions to implement energy and GHG-reduction retrofits of its buildings.

Carbon Neutral Studies are part of the initial steps to achieve this

Fuel switch to alternative energy sources: In “Dirty Grid” areas, we must switch from carbon sources to alternative energy sources such as solar PV, local biomass, wind power, and combined heat and power (CHP).

goal and commitment. This commitment by the Federal Government

Our Summarizes Results

is part of a broader Federal Sustainable Development Strategy

Typical Design Option 1 Minimal Departmental Standard

(FSDS) which centers on numerous long-term goals including the

Reduces the building’s energy consumption by 24% from

following 2030 targets:

requirements of the National Energy Code of Canada for Buildings

• Effective Action on Climate Change: Reduce Canada’s total GHG

(NECB) 2011.

emissions by 30%;

Recommended EEMs:

• Low-Carbon Government: Reduced GHG emissions from Federal

• LED upgrade, daylight harvesting and occupancy sensors;

Government fleets and buildings by 40%;

• 4-pipe centralized heating and cooling system with heat

Performance Targets and Experience We conduct an in-depth investigation of design strategies and Energy Efficiency Measures (EEMs) that can substantially improve the energy performance and reduce the energy cost and GHG emissions of the subject building. We bundle the various possibilities for design interventions in four buckets; each defined by a different goal—ranging from the sky’s the limit budget option to a barebones ‘what would it take to meet modern department standards.

The pie below shows an overview of typical existing building energy consumptions.

recovery chiller; • Condensing natural gas boilers and adiabatic fluid cooler; • Chilled beams and repurposed existing cast-iron radiators for air conditioning and heating, respectively; • Exhaust air heat recovery coils (for lab hood and building exhaust heat recovery); • Humidification upgrade; • Variable Speed specifically exhaust hoods; • Wall upgrade (with R-40 insulation); • Roof upgrade (with R-40 insulation); • Window upgrade (with U-0.25 overall heat transfer coefficient); and • New Dedicated-Outside-Air-System (DOAS) to accompany ventilation system upgrade for ASHRAE 62.1 compliance.

2019 | ATLANTIC FOCUS

29

Typical Design Option 2 Highest GHG Reductions while Achieving a Positive Net Present Value (NPV) Within 25 Years Reduces building’s carbon footprint (annual GHG emissions) as much as possible, while producing a positive net-present-value (NPV) for the project when evaluated against its current state over a 25-year lifecycle.

artificial intelligence for real-time energy Savings

Recommended EEMs: • All EEMs from Design Option 1; • Ground-loop heat exchanger sized to 60% of peak heating load with supplemental condensing natural gas boiler;

#CARBONCRUSADERS www.ecopilotcanada.com

• Supplemental heat pump for domestic hot water (DHW) production (preheat carried out by means of the heat recovery chiller where present); • Elevator regenerative drives; and • 100 kW solar PV system.

Typical Design Option 3 Carbon Neutral Achieves Carbon Neutrality. The bundle of EEMs reduces the carbon footprint of the building to n

et-zero without resorting to

carbon offsets or renewable energy purchase.

Recommended EEMs: • All EEMs from Design Option 1; • Ground-loop heat exchanger sized to 60% of peak heating load with supplemental condensing natural gas boiler; • Supplemental heat pump for domestic hot water (DHW) production (preheat carried out by means of the heat recovery chiller); • Elevator regenerative drives; and • Larger (over 100kW) solar PV system with batteries.

Typical Design Option 4 Best Value for Canada Provides the best compromise for the building in terms of achieving significant GHG reductions and overall project feasibility.

Recommended EEMs: • All EEMs from Design Option 1; • Supplemental heat pump for domestic hot water (DHW) production (preheat carried out by means of heat recovery chiller); and • 100 kW (1,037 m2) solar PV system

Conclusion Atlantic Canadians need to look at the potential carbon reduction in our existing buildings by retrofitting. Taking on a retrofit can be costly and complex so we recommend starting with a detailed study. A carbon retrofit study will look at the energy consumers and

Attract new tenants.

Impress current ones.

help in the decision making to ensure that budget and performance targets are met. Budget and carbon goals should be set carefully and adhered to by the study to ensure that the methodology will give the required results. Every building is different but can achieve significant energy savings through retrofitting.

Charline Cormier CET, LEED® AP BD+C, ID+C, is Senior Architectural Technologist, Sustainable Buildings Consultant, Stantec. Co-author Chris Russell P.Eng., PMP, LEED AP BD+C, CM-Lean, is a Senior Engineer at Stantec.

30

2019 | ATLANTIC FOCUS

Partner with Efficiency Nova Scotia for fewer maintenance issues and a more comfortable environment. We’ll help your building grow into a bustling community of long-term residents and businesses.

Learn more at efficiencyns.ca/commercial

BUILDING

LASTING CHANGE

2020 JUNE 3 – 5, 2020 BEANFIELD CENTRE, TORONTO For sponsorship opportunities contact | Sarah Burns | 613-288-8097 | sburns@cagbc.org ATL Sept 2019 1-4_pg OUTLINES.pdf 1 9/5/2019 11:13:35 AM

C

M

Y

Acuity Brands, Inc. (NYSE: AYI) is the North American market leader and one of the world’s leading providers of lighting and building management solutions for commercial, institutional, industrial, infrastructure, and residential applications throughout North America and select international markets. Proud supplier of lighting and controls for the Marystown YMCA Recreation Centre, and the New Kinesiology Building (Centre for Healthy Living) at UNB. www.acuitybrands.com

CM

MY

CY

CMY

Subscribe to

SABMAG DIGITAL

K

Your access to SABMag in all formats. iTunes: http://apple.co/2cTFKhM Pocketmags: http://bit.ly/2gsGA7T Google Play: http://bit.ly/2hpNfwV 2019 | ATLANTIC FOCUS

31