RGU Sir Ian Wood Building - BREEAM Building Case Study

RGU Sir Ian Wood Building - BREEAM Building Case Study First Issue 01 October 2012 Update 6 November 2015 Information required Basic description of th...
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RGU Sir Ian Wood Building - BREEAM Building Case Study First Issue 01 October 2012 Update 6 November 2015 Information required Basic description of the project and building

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Phase 1 The Garthdee masterplan proposes a combined, ‘multi-school’ building at the eastern end of the campus on a site that was occupied by RGU’s pre-school nursery and had previously been a caravan park. This radical shift away from previous masterplans has, for the first time, provided the University with a clearly legible ‘front door’ that assists people movement, protects the most sensitive areas of campus parkland and encourages collaboration and interaction. The main development within the new master plan is the creation of a 38,000 sq m building to be constructed in three phases as funds become available. Phase 1 is now complete and houses new schools for Engineering, Computing, Life Sciences and Pharmacy. A diverse range of specialist labs and workshop spaces are incorporated. Subsequent phases include new schools for Art, and Architecture and the Built Environment. The Sir Ian Wood Building is arranged as two shallow plan, curvilinear teaching blocks placed either side of an internal street and courtyard space. A variety of food outlets, meeting spaces and multi-use learning, exhibition and performances spaces are provided on multiple levels within the communal spaces. The teaching wings are constructed in steel frame with precast concrete floors that provide flat soffits and facilitate easy re-configuration of internal room subdivisions. The curving central street, leading to a light filled atrium space are roofed in ETFE membrane that provides high levels of thermal performance and, due to its minimal self-weight, keeps structure to a minimum. The development is highly energy efficient and generates over 15% of its energy use through on-site renewable technologies (ground source heat pumps). Social interaction is encouraged between the academic schools as students come together in these multi-use, internal spaces. It is anticipated that both students and staff will feel the benefits of co-location and increased collaboration and that all user groups will assume a sense of ownership, not only in their individual school or department, but also the university as a whole. Phase 2 The Scott Sutherland School of Architecture & Built Environment completes the South Wing of the BDP designed Sir Ian Wood Building for Robert Gordon University. The five storey building, sitting on the banks of the River Dee, provides accommodation for 645 staff and 40 staff with spaces ranging from large, flexible, open plan studios overlooking the river through to seminar rooms, dedicated model making workshops, and an exhibition area. The building further completes the BDP masterplan for the University’s Garthdee Campus – a masterplan that looks to concentrate all academic facilities on the eastern portion of the site whilst retaining and enhancing landscaped qualities to the west end of the site. The completion of this phase further strengthens the university’s desire for co-location and the increased collaboration between faculties and departments that this approach will bring. The client brief requested a high degree of flexibility in order to have the option to reconfigure to address changing student numbers and new ways of teaching. Therefore the studio spaces are fully flexible and can be easily re-configured as there are no internal load bearing partitions. The structural design philosophy was developed to support this with large spans to allow column free spaces and bracing arranged around fixes such as circulation cores. Precast concrete planks and slimfloor construction simplified M+E coordination whilst also allowing for a simpler erection process.

BREEAM rating and score

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Phase 1 Very Good 61% Phase 2 Design Stage score for RGU Phase 2 is 61.7% (Very Good).

Details of the key innovative and low-impact design features of the building

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Phase 1 / 2 The lighting installation comprises of low energy fitments throughout. Lighting is controlled via absence detection within teaching, meeting rooms and general areas. Atrium, refectory spaces are controlled with combined daylight/absence sensors. LED lighting has been installed throughout Phase 2. Increased mass helps the internal environment cope more efficiently with swings in temperature and ‘free cooling’ or night purging will be utilized. The building has an exposed concrete horizontal slab to the majority of rooms. Aberdeen City Council set the building a target of 16% on site renewables and for Phase 1 a proportion of the building heating load is satisfied via Ground Source Heat Pumps (GSHP) located in the main plantroom. The heat pumps are connected to external borehole arrays (underneath the main car park) absorbing heat and circulating the warm air to the plantroom. Here the heat pumps will operate to raise the water temperature to around 55 degrees which can then be circulated around the building to feed radiators etc. On Phase 2, this has been achieved with photovoltaics on the roof and VRF (variable refrigerant flow) air conditioning to the rear of the studios. Natural Ventilation is utilised where possible. During the summer both high and low level windows are used to maintain comfortable conditions. During the winter, lower external temperature increase cooling ability allowing only the use of the high level windows to ensure occupant comfort and avoid draughts. There are external louvers on the South and East Elevation on the building to cut down on solar gain and there is also user operated blinds in all staff and teaching areas. All blinds are occupant controlled (powered in communal areas). These are roller blinds so that glare can be restricted but natural light can still enter the space. A live energy consumption meter adjacent to the main entrance is available for public viewing. All toilet areas will utilise occupancy sensors to reduce water wastage while these areas are not in use. There is fully plumbed in drinking water is available at various locations throughout the building. Taps within toilets are push controlled and shut off on timer, urinals are sensor controlled and all wc’s have dual flush facility to reduce water consumption. Leak detection is provided on the mains water supply to the building. This will detect any major and minor leaks and will trigger an audible alarm.

Basic Building Cost (£/sqm)

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Phase 1 £1,175 per sqm Phase 2 £1,170 per sqm

Services costs (£/sqm)

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Phase 1 £675 per sqm Phase 2 £678 per sqm

External works (£/sqm)

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Phase 1 £137 per sqm Phase 2 £87 per sqm

Gross floor area (sqm)

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Phase 1 24427m2 GROSS Phase 2 4054 m2 GROSS

Total area of site (hectares) Function areas and their size (sqm)

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Site area is 4ha (no change from Phase 1-2) Phase 1 17350m2 NET Phase 2 2792m2 NET

Area of circulation (sqm)

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Phase 1 7070m2 CIRCULATION *this is different from Balance. A balance figure also includes items such as Plant. Phase 2 565m2 CIRCULATION *this is different from Balance. A balance figure also includes items such as Plant.

Area of storage (sqm)

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Phase 1 350m2 STORAGE Phase 2 110m2 STORAGE

% area of grounds to be used by community (where

RGU

Grounds have not been assessed and if this is required RGU to advise.

relevant)

% area of buildings to be used by the community

BDP/RGU

Evidence was included under MAN 7. Phase 2 is a specialised department and shares these facilities. This equates to 3658m2 (17% of net area).

(where relevant)

Predicted electricity consumption (kWh/sqm)

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Phase 1 142.27 kWh/m2 Phase 2 77.41 kWh/m2

Predicted fossil fuel consumption (kWh/sqm)

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Phase 1 104.73 kWh/m2 Phase 2 23.4 kWh/m2

Predicted renewable energy generation (kWh/sqm)

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Phase 1 85.28 kWh/m2 generated by ground source heat pumps.

Phase 2 5.41 kWh/m2 generated by photovoltaic installation. Predicted water use (m3/ person/ year))

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Phase 1 6.2 m3/person/year Phase 2 5.2 m3/person/year

% predicted water used to be provided by rainwater or greywater The steps taken during the construction process to reduce environmental impacts i.e. innovative construction management techniques

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0%

Phase 1 The main contractor implemented a site waste management plan including setting up a waste transfer station on site. A full time skip vehicle transferred skips from the construction zone to an on-site station where waste is segregated, compacted and then removed in bulk loads directly to the recycling plants, minimising void spaces. The University study for the first six months estimated that 368 journeys and 372kg of CO2 were saved. Less than 1.3% has gone to landfill. Additional benefits include a cleaner, tidier site as skips are never overfilled and always available. Skips leaving site are also 100% full of compacted materials. This innovation had been further developed from the first visit and although full year figures are not yet available the very ambitious targets set at the start of the project are likely to be exceeded. Waste Aware Scotland is now using the RGU waste management plan for a case study. Phase 2 The M+E sub-contractor utilised BIM technology in order to pre fabricate all risers and main M+E routes off site thus reducing wastage and ensuring a quick and safe on-site installation that reduced both programme, cost and risk to site personnel. Site waste management plan and energy use monitoring was implemented for Phase 2.

A list of any social or economically sustainable measures achieved/ piloted

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Phase 1 During the construction phase monthly newsletters & questionnaires were sent out along with regular neighbourhood meetings, student meetings, and open days convened. Deliveries were strictly controlled and route directions sent out for all deliveries. An extensive programme of community events and charity works was been implemented throughout the contract. The events included:  Give Blood  VSA Gifts for Kids at Xmas  Poppy Appeal,  Marie Curie events  Sports Relief  Children in Need.  Road Safety week,  World Book Night. Local labour was employed and presentations and advice are provided for unemployed people trying to get into construction. Surplus timber was given to University and the local school who made bird boxes and squirrel feeders and a ‘bug hotel’. Phase 2 SSSA+BE utilised the building as a learning resource throughout the construction period: • Weekly Friday afternoon tours were held for all staff and students • Regular presentations were given at all stages from design development to construction • The contractor hired a number of students on summer placements The BIM and the online documentation photographs have been made available to RGU as a future learning resource

NOTES: 

Included energy use figures for Phase 2 are those generated by simulation software and should not be used as a cross reference against the actual energy consumption of the building.

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