Page 1

metechno LEADING OFFSITE TECHNOLOGY

OFFICE WASHROOM / WC

Design Guide www.me te chno.co.uk

33


33

WASHROOM V.01 ISSUED 07.10.2013


metechno LEADING OFFSITE TECHNOLOGY

The guide is intended to promote a consistent, efficient and high quality approach to the design of washrooms and associated building service elements. This is one in a series of Metechno Design Guides and should be read in conjunction with the relevant specification for the project being undertaken.

Contents

PAGE

1.0

Design Principles

4

2.0

Core Layouts

5

3.0

Key Dimensions

6

4.0

Strategy

8

4.1

Scope

9

4.2

Interface

9

5.0

Components Floors & Flooring

10

5.1

Skirtings

11

5.2

WC Cubicles

11

5.3

Ambulant Cubicles

12

5.4

Cubicle Frontages

13

5.5

Vanity Units

14

5.6

Hand Drying

15

5.7

Taps & Soap Dispensers

15

5.8

Urinals

16

5.9

Ceilings

17

5.10 Other Walls

18

5.11 Disabled Toilets

19

5.12 Showers

20

5.13 Cleaners Cupboards

20

5.14 Sanitaryware

21

5.15 Brassware

24

6.0

Mechanical & Electrical

25

6.1

Mechanical Services

25

6.2

Lighting

27

6.3

Air Conditioning & Ductwork

28

Metechno Approach

29

Client’s Notes Page

35

7.0

www.m etechno.co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

33


1.0

design principles Washroom/WC designs vary rarely change but can accommodate new thinking and thought processes. In this document we have tried to guide you through our processes of best practice and design for manufacture, whilst also indicating areas for potential architectural flair within the washroom/WC area.

Design Criteria Preferences Office Developments Occupancy Density: 1 person per 10 sq.m Male to Female Ratio: 50% - 50% Expansion Facility: 1 person per 6 sq.m

West End Dealer Accommodation Occupancy Density: 1 person per 10 sq.m Male to Female Ratio: 50% - 50% Expansion Facility: 1 person per 6 sq.m Male to Female Ratio: 80% - 40%

City Dealer Accommodation Occupancy Density: 1 person per 10 sq.m Male to Female Ratio: 50% - 50% Expansion Facility: 1 person per 5 sq.m (- 15% for absenteeism) Male to Female Ratio: 80% - 40% Supply air ventilation: 8 air changes per hour Extract air ventilation: 10 air changes per hour Room air temperature (min): 18 deg. C db. Room air temperature (max): 24 deg. C db (if comfort cooling provided) Lighting levels (at FFL): 200-250 Lux subject to choice of finishes

NOTES: The ventilation plant and riser distribution must be capable of serving the ‘expansion’ accommodation to the above specification. The above is to be read in conjunction with the requirements of BS 6465: 2006. Above information supplied kindly by Land Securities.

4

© copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

2.0

core layouts The following core layouts are a selection of typical washroom/WC configurations.

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

5


3.0

key dimensions of a typical washroom/wc

The layout of a toilet should be based upon a 900mm grid, which will allow good ergonomic space planning and will allow for alignment of likeminded detailing. The following dimensions where possible should be adhered to:

Architectural dimensions A - Vanity to cubicle frontage 1200 min (1500mm preferred) B - Internal dimension of cubicle 1500mm C - Cubicle centres 900 mm D - Urinal centres 700 mm min E - Vanity depth 600 mm with 40 mm cleaning gap

Ceiling heights Standard 2400mm FFL to ceiling height, which allows for economic usage of standard materials, sufficient height for detailing and suitable above ceiling void for bulky services ductwork etc.

6

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

Services dimensions F - WC wall 300mm G - Back to back WC wall 450mm (may need to increase for acoustics) H - Vanity wall 150mm J - Urinal wall (cistern) 200mm

WC CUBICLE DUCT ZONE

BACK TO B ACK WC CUBICLE DUCT ZONE

VANITY UNIT DUCT ZONE

w w w. m et ech no. co.u k © copyright Metechno Limited - not to be reproduced/forwarded without permission

BACK TO B ACK WC CUBICLE DUCT ZONE WITH ACOUSTIC SEPARATION

URINAL DUCT ZONE

7


4.0

strategy There are three approaches to the washroom/WC fit out and care should be taken when selecting each option.

Traditional approach • • • • • • •

Suits both new build and refurbishment Labour and skills availability issues Needs large material movement Perception of being cheap option Quality and consistency not assured Programme uncertainty Typically significant site waste

TECHNO-WALLTM Prefabricated Offsite Walling System (Product Code MET W1.01) • • • • • • •

Suits both new build and refurbishment Can be made to suit hoist dimensions Less material movements on site Perception of being costly option Quality and consistency assured Significant programme rewards (compression) Site waste reduced

TECHNO-PODTM Prefabricated Offsite Pods (Product Code MET P1.01)

TECHNO-MODTM Prefabricated Offsite Modules (Product Code MET M1.01) • • • • • • • •

Suits new build only May require longer lead in period Can place point lead strain on floor loading Has dimensional restrictions due to transportation On project’s critical path Massive programme rewards (compression) Quality and consistency assured Site waste negated

8

© copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

4.1

scope Once the approach has been determined it is advisable to agree upon the scope of the package and the relationship with the adjacent trade interfaces. Full fit out (within a defined area) • • • • •

All Stacks and Vents to agreed connection point at roof/basement level Hot and Cold water to toilet area including water heater (if on scheme) Electrical works and circuitry to local distribution board Horizontal ductwork into main ductwork riser by others All components within formed drywall box (by others)

Partial fit out (within a defined area) • • • • •

Horizontal wastes to all Sanitaryware up to agreed connection point Hot and Cold water to toilet area from defined point within area Plug in light fittings into pre-fitted roses by others Flexibles and grilles only to ductwork All components as scoped within formed drywall box (by others)

Finishes fit out (within defined area) consider the following options: • All services by the Shell and Core M&E contractor • All components within the formed drywall box by others

4.2

interface details for discussion/prompt • • • • • • • • • • • •

Distribution board in local/adjacent riser Overflow monitoring/leak detection may be necessary Fire alarm and PA works by others, may require co-ordination with programme Disabled alarm scope Stack and vent start/stop point Commissioning responsibility and extent Fire compartmentation and fire damper positions Acoustics and approach to maintaining the specification Privacy (especially on door opening) Ductwork access for cleaning regime All access valve and maintenance points Sprinklers

w w w. m et ech no. co.u k © copyright Metechno Limited - not to be reproduced/forwarded without permission

33 9


5.0

components - floors and flooring The preferred option is for a calcium sulphate raised floor system on pedestals which can accommodate a floor from 50mm to 500mm zone; this allows the elimination of wet trades such as screed and provides for programme advantages with follow-on trades such as drying time etc.

The floor can be either; • • • •

Ceramic tile (preferred option) Natural Stone (20 mm max) Reconstituted tile Typical tile dimensions from 450 x 450, 600 x 300, 300 x 300, 900 x 300 etc.

Grid layouts to suit the architectural concept but still maintaining the 900mm grid. Grout colour to match tile but leaning to a dark shade to negate the need for replacement/significant maintenance once cleaning regime is commenced. Care should be taken to specify correct finish around urinals, as uric acid is the most aggressive substance in a toilet environment.

An industry recognised specialist for the technical support of stone and ceramic is Domus - www.domustiles.co.uk

10

© copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

5.1

skirtings The skirting tile should be of the same material as the floor normally 100 mm high, with the exception in the cubicles which could be in stainless steel, but in all cases the skirting tile should be flush with the adjacent wall finishes.

5.2

wc cubicles These should ideally be 900 mm centres with an overall maximum depth of 1500mm and with a basic two (or more panel) elevation with a fixed lower panel and accessible upper panels mounted on hinges with a concealed locking device. Back panels can be laminate, veneer or clad in back painted glass but the detailing is basically the same in each case with the allowance of 20mm for each of the stated finishes.

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

11


5.3

ambulant cubicle These must have a minimum clear width of 800 mm with an additional 750mm activity space beyond.

500 min

100

Clothes hook set at 1400 above floor level

800 min

750 activity space clear of door swings

Ambulant WC should be ideally wall hung and complete with a concealed cistern and stainless steel dual flush faceplate (as above) but the height needs to be 480mm in lieu of the standard 400mm which can be achieved with a high seat or mounting the WC higher on the frame. The cubicle door must open out and it is advisable to use the last cubicle in the run where possible. Two horizontal and one vertical grab rails need to be provided within the cubicle as a minimum standard.

12

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

5.4

cubicle frontages These are designed to be flush wall appearance comprising of a 45mm solid core construction faced and balanced with a FSC veneer, laminate or lacquer with a pilaster detail between each cubicle allowing a rebate detail to adhere to privacy requirements. Each door is hung on a single pair rising butt hinges all with a ‘D’ line disabled WC snib and a buffered coat hook to rear. Note that each door should have a continuous buffered gasket to help eliminate slamming.

An industry recognised specialist for the technical support of cubicles is FR Shadbolt - www.shadbolt.co.uk

w w w. m et ech no. co.u k © copyright Metechno Limited - not to be reproduced/forwarded without permission

13


5.5

vanity units The ‘floating stone’ top is the firm starting point. This is supported from cantilevered 6mm bracketry within the prefabricated wall section. Tops typically are 30mm natural stone or reconstituted stone requiring research and proof for suitability of usage. Tops can be solid 30mm but can be detailed with a dropped edge or additional fascia should the designer require. Centres of sinks to be 900mm as a preference although this dimension can reduce to a min of 700mm.

Sinks are to be an under slung complete with Sink Platform and chrome bottle trap and pipe work. (Please refer to 5.14 for further details). Splash backs behind sinks need to be a glass or suitable cleanable surface with special attention placed upon the paper towel dispenser and towel chute co-ordination. Full height mirrors shall be provided above vanity units. The mirrors shall align with the joints in the vanity unit stone and shall be set forward for the angled towel dispensers but have a small floating detail for the horizontal wall recessed towel dispenser. Shelving for bags, books, briefcases etc. need to be considered and if feasible these should be designed as part of the vanity stone tops with provision for these items. Should dimensions constrain this option a neatly designed shelf above the stone or at the end of the vanity should be considered. Under no circumstances should protruding shelves be designed in conjunctions with mirrors. An industry recognised specialist for the technical support of stone tops is Domus - www.domus.co.uk

14

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

5.6

hand drying There are two approaches for this element; • Paper towels/chutes/bins • Hand driers

Paper towel combinations - wall mounted flat option or angled behind vanity mirror either dropping into a floor mounted plastic or stainless steel round bin through a 100mm diameter hole cut through worktop. Even if hand driers are not initially supplied, provide necessary conduit to a fused spur for each tenant to install in the future if required. The use of combined hand-dryer towel dispenser and bin should be considered as an option. An industry recognised specialist for the technical support of washroom accessories is Allgood - www.allgood.co.uk

5.7

taps & soap dispensers Taps shall be sensor tap with independent soap dispensers (plastic bottle) both mounted on the ledge on the sink. Most makes of taps can be utilised within this set up. (Please refer to 5.14 for further details). ALL TAPS MUST BE WRAS APPROVED.

Typical tap

Typical soap dispenser

w w w. m et ech no. co.u k © copyright Metechno Limited - not to be reproduced/forwarded without permission

15


5.8

urinals These should ideally be on the 900mm grid lines but should never be less than 700 mm centres. These can be basic two (or three) panel elevation with a fixed lower panel and accessible upper panel mounted on hinges with a concealed locking device. Back panels can be laminate, stone, tiling or clad in back painted glass but the detailing is basically the same in each case with the allowance of 20mm for each of the stated finishes. Note; urine is the most aggressive of all substances and detailing and avoidance of porous materials is imperative. Skirting should be flush at the base (as before) with a shadow gap at the top.

Note that access will be required at high level if a cistern is utilised or at low level if a concealed trap urinal is used. Manufacturers recommended fixing heights are to be followed in all cases as these vary with each type of urinal. Urinal dividers are not usually required.

16

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

5.9

ceilings Note that no access should be required in the ceiling. Above cubicles, pre-painted moisture resistant MDF is to be used, which has preformed apertures for lights and grilles and the remainder of the ceiling is to be standard Gyproc mf system either tape and jointed or skimmed. Detail abutting the two materials by means of a standard Gyproc shadow bead positioned on the centre of the cubicle door. Alignment of lights, beacons and sounders should be considered.

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

17


5.10

other walls in toilet area The starting point for these walls should be painted plasterboard but if design and costs allow, extend hard finishes onto other adjacent walls. Skirting should be flush at the base (as before) with a shadow gap at the top. Note that a full height-dressing mirror is often required in each toilet so these are usually positioned on these walls.

There is usually a requirement from the tenant to accommodate vending machines and these should be positioned on these walls with provision for suitable fixing backgrounds. An industry recognised specialist for the technical support of washroom accessories is Allgood www.allgood.co.uk

18

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

5.11

disabled toilets These rooms are designed around basic statutory dimensions notably 2200 x 1500mm internal dimensions. Finishes should be taken as per the main toilets, complementing all aspects of the selected materials along with all the necessary statutory grab rails, Sanitaryware etc. As these rooms are so small, a podded construction should always be considered. If a requirement for a shower area to each floor is stated, extending these rooms should be considered.

The Disabled WC should be, ideally, wall hung, complete with a concealed cistern and stainless steel dual flush faceplate (finish can vary). Sink and tap over to be suited in with the main toilet scheme. Grab rails and additional fixtures and fittings to be stainless steel.

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

19


5.12

showers On floor Should on floor showers be a requirement it makes sense to enlarge the disabled toilet to incorporate a walk in shower room.

Utilising the disabled toilet layout and provision if necessary can also accommodate provision for multi faith washrooms.

Basement Where showers are to be provided for cyclists, provision should be made to comply with the Local Authority requirements and that of the targeted BREEAM rating for the development. Generally, showers shall be provided at a density of 1 per 10 cyclists. Lockers should be provided at a density of 1 per cyclist

5.13

cleaners cupboards and sinks Provision of these is to be made on each core if multi tenant design or one per floor if single tenancy design. Should the cleaner’s cupboard be accessible from a landlord’s area from each tenancy, and then one sink per floor should be considered. Sink to be Belfast type with integral splash back, bib taps and grating with provision for two shelves above.

20

© copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

5.14

sanitaryware Ideal Standard Group are considered as Britain’s largest bathroom manufacturer who can and will provide all necessary support, product back up and new innovative ideas whilst providing stability for Developers over the buildings life not just the build period. The following are examples of Ideal Standard ranges but the designer is to check with as to whether supply agreements are in place for specific models..

WC Pans Wall hung WC pans are the preferred solution and must be installed on the manufacturers proprietary mounting frame within the duct.

Jasper Morrison – Wall Hung

Duravit Happy D Wall Hung

Concept Wall Hung

Duravit Starck 3 Compact Wall Hung

White Wall Hung

Duravit Architec Wall Hung

An industry recognised specialist for the technical support of sanitaryware is Ideal Standard - www.ideal-standard.co.uk Concept back to wall

w w w. m et ech no. co.u k © copyright Metechno Limited - not to be reproduced/forwarded without permission

21


5.14

sanitaryware Pushbuttons There is a selection of push buttons available to suit Architect preferences and these can be chrome, satin or even colour coated to match panels

Underslung Basins - all with overflow

Marlow

Washpoint

Cherwell

Duravit Architec basin

Alternative Basins (but not necessarily approved)

Airside Basin

IQ wall mounted

Leadenhall Basin

Portman

22

Š copyright Metechno Limited - not to be reproduced/forwarded without permission

Independent Basin

Duravit Architec basin with ledge


metechno LEADING OFFSITE TECHNOLOGY

2.0 Urinals Urinals to be cistern fed where possible with either sensor mounted in ceiling or above each individual urinal. All waste traps should be accessible from the WC accommodation (unless full walk-in access is provided to the rear). Wastes must be white plastic.

Contour urinal (modified)

Jasper Morrison

White Urinal

Duravit Urinal 082930

Duravit Urinal 082135

Taps - Basin

Sensorflow 21

Contour 21 Sensorflow

Moments Sensorflow

Robert Pearson Sensor taps SS32

Robert Pearson Sensor taps SS45

Taps - Wall mounted

Sensorflow 21 Wall

Melange

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

Aquarius Sensor taps WM

23


5.15

brassware Showers - valves

Glance

Geometry

Jasper M orrison TT

Ascari Thermostatic

Showers - heads

Ellipse

Rain Shower

Jasper Morrison Overhead Shower Head

BREEAM rating is a standard policy and consideration to water saving must be a primary objective in the design of the system. Ideal Standard will help in identifying the requirements and advise on all specifics and specifications where necessary. An industry recognised specialist for the technical support of sanitaryware is Ideal Standard - www.ideal-standard.co.uk

24

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

6.0

mechanical & electrical For detailed specification please refer to the relevant section of the Services Engineering Requirements Document.

6.1

mechanical services Hot & Cold Water Services All hot and cold water pipework distribution should, whenever practical, be contained within the accessible riser ducts and should be of copper construction with soldered joints. Where pipework is in view the installation should be of a chrome finish. Hot and cold-water services should be insulated and trace heated and offsite tested when provided as part of the prefabricated offsite walling system or pod.

WC Soil and Waste Soil either in cast iron (preferred), copper, galvanised steel or plastic prefabricated off site and supported on adjustable angle plate system. Cisterns pre-plumbed and tested.

Indicative only

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

25


6.1

mechanical services Vanity/Urinal Soil & Vent should be in plastic prefabricated off site and supported within current wall detailing. Hot and cold-water services will be lagged and trace heated all off site tested.

Indicative only

26

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

6.2

lighting Each cubicle and above each urinal shall have a central positioned down-lighter. Same light to appear as main central strip of light but with emergency back-up as necessary.

Each basin to have a single mounted spotlight above. Above vanity to be lit to design requirements. Additional feature lighting of cubicle frontage/wall washing/mirror can be utilised but will need to be checked against the relevant cost plan. The actual selection of light fittings should be from preferred supplier list. Light fittings to be powered and controlled from the lighting management system.

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

27


6.3

air conditioning & ductwork Clean air is to be supplied above vanity units or in lobbies and then extracted above WC’s and urinals by means of return grilles set within ceiling and/or concealed plenums.

Indicative only

Consideration must be given for the ductwork-cleaning regime.

28

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

7.0

metechno approach What are we - the offsite advantage • We are a offsite manufacturer with the experience and thoughts of a contractor. • Our services are wide and flexible to suit each project. • Our dynamics allow each project to be funded and resourced correctly for the needs of all. • Quality and delivery remains our USP’s. • We offer aftercare and would like to be considered as part of the team.

SUPPLY SUPPLY CHAIN CHAIN

METECHNO SUB

SUB CONTRACTORS

CONTRACTORS

CLIENT CLIENT

How can we help you? • We will look at each project with an offsite mindset. ◌• We are happy to fully design a project yet only supply the “value added” components. ◌• We would like to show you how time can be saved and utilised to your benefit. ◌• We would like to offer an “OPTION” for you to consider at Tender stage. ◌• We come from a subcontracting background so are fully aware of you needs and requirements. ◌• We can offer specialist and specific training to help your needs thus saving in paying “so called expensive specialists”

w w w. m et ech no. co.u k © copyright Metechno Limited - not to be reproduced/forwarded without permission

29


7.0

metechno approach The premises • 150,000 ft2 production facility in Dalbeattie • Clear open shop floor allowing adaptation to each project • In depth pool of experienced craftsman

Design - the key to success • Design of fabric and services • BOM from design information • Co-ordinated services and fabric Design is the key to all projects ensuring that we provide all parties with a fully coordinated, coherent and detailed design for all fabric and services combined. BIM will facilitate this but it it is a process led Technology which we are at the forefront of.

30

© copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

TECHNO-WALLTM MET W1 . 01 - Wall Modules Our initial offer to the market uses our previous 10 years of experience in the Washroom Sector. We offer a prefabricated Modular wall sections bespoke manufactured for each individual project needs. Techno-WallsTM are fully designed to suit logistical requirements and can be broken down to suit a window or lift dimension. Fully designed to integrate with the surrounding fabric and installed using bespoke plant.

TECHNO-PODTM MET P1 . 01 - Volumetric Pods Our second offer to the market uses our previous 8 years of experience in the Residential Sector. We offer prefabricated Volumetric Pods bespoke manufactured for each individual project needs in the Residential and Commercial sectors. Pods are fully designed to suit logistical requirements along with the needs and requirements on a site by site process. Fully designed to integrate with the surrounding fabric and installed using simple plant.

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

31


7.0

metechno approach

TECHNO-MODTM MET M1 . 01 - Volumetric Structural Modules Our third offer to the market will use our combined experience in offsite manufacturing to produce the optimum offsite solution. We will offer a prefabricated option to the market for specific projects such as Marketing Suites, Hotel Room and Student Bedroom Modules and Volumetric Module bespoke manufactured for each individual project needs. Modules are fully designed to suit logistical requirements along with the needs and requirements on a site by site process. Fully designed to integrate with the surrounding infrastructure and installed using simple plant.

32

Š copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

2.0 The offsite advantages Shorter build times Providing the end user and developer with faster return on investment with potential for early rental or sales income for client, resulting in lower holdings costs. Predictable build times With more controlled project programming, you know what is going to happen and when. Better build quality Working in a clean dry manufacturing environment is far more conducive to the production of a quality product then on a traditional building site. This in turn leads to fewer defects, fewer disputes and happier clients. Removal of risk The greatest benefit is the removal of weather and associated onsite delays with an offsite manufacture solution. Secondly, there is generally a time period where material components relating to pods are let. This time delay can result in higher costs, whereas pod costings are fixed at the beginning of the project, potentially avoiding intermediate cost increases. Thirdly, loss or damage remains the responsibility of the manufacturer until onsite handover. Health & safety There are more onsite construction injuries and fatalities in comparison to offsite manufactured components. This is clearly a reflection of a safer single level working environment. See the finished product - prototypes Upon or prior to award of contract, prototype bathroom (s) are produced and signed off with contractor and client. Quality and finish of product is agreed at this time avoiding defects and disputes at completion of project. Centralised Control Purchasing for the head contractor is simplified with one contractor. Buying a number of trades and materials from one source reduces procurement resource time and effort resulting in cost savings. Less demand on resources A reduction of onsite labour requirements in a time of skilled labour shortages enables subcontractors to utilize their workforce more efficiently in open spaces, rather than congested spaces. Handover defects are minimized, with client approvals signed at the facility and prior to handover. Material and labour movements in hoists and tower cranes are minimized. Onsite welfare facilities are minimized. Less construction disruption Work onsite is safer, quieter and cleaner. Potentially up to 90% fewer vehicle movement’s onsite, which assists with less disruption around the sensitive worksite

w w w. m et ech no. co.u k Š copyright Metechno Limited - not to be reproduced/forwarded without permission

33


7.0

metechno approach The offsite advantages Why is it green? Factory manufacture is inherently less wasteful than traditional forms of construction and thus more sustainable, specifically; • Fewer deliveries to site, meaning less noise, dust and disruption. • Lower waste to landfill reducing onsite waste removal and disposal costs. • Factory waste material is typically less than 1.5% compared with 7%+ on a traditional construction site and recycling of waste is more reliably controlled in a factory environment than it is onsite. • Factory operatives are up to 250% more efficient than the same activity carried out onsite. • Recent Life-cycle analysis has demonstrated that offsite construction methods reduce the overall impact on the environment by at least 40%. Decision making Early decision making is required regarding the build method and exact specification requirements, which is traditionally not completed at the initial design phase. A greater level of coordination is required at the procurement stage to ensure the offsite packages integrate correctly with conventional building elements. Ideally, Architects and Consultants need consultation with the offsite manufacturer early in design stage. Changes during the manufacturing process can impact on time and cost to the project.

34

© copyright Metechno Limited - not to be reproduced/forwarded without permission


metechno LEADING OFFSITE TECHNOLOGY

2.0

client’s notes page

w w w. m et ech no. co.u k © copyright Metechno Limited - not to be reproduced/forwarded without permission

35


Metechno Limited 4 Station Road St Neots Cambridgeshire PE19 1QF T 01743 290050 E info@metechno.co.uk

www.metechno.co.uk

33

LEADING OFFSITE TECHNOLOGY

Washroom guide  

The guide is intended to promote a consistent, efficient and high quality approach to the design of washrooms and associated building servic...

Read more
Read more
Similar to
Popular now
Just for you