Centre for Disability Studies: Jean Strutt House
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as PDF Simmonds.Mills Architects were commissioned by the charity Disability Essex. The brief called for a sustainable building that would provide office and meeting room spaces for the Charitys staff, clients and visitors, as well as providing letable space for the charity to rent out to similar organisations. The Centre for Disability Studies has been designed as two closely linked buildings a North Wing, Jean Strutt House; & a South Wing, The Peter Broughton Wing. The brief required a combination of high levels of thermal comfort, low running costs and low CO2 emissions. In addition the Charity also decided to generate electricity on site in order to create an income stream and further reduce emissions.
Centre for Disability Studies: Jean Strutt House : Project images
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Fuel use
| Pre-development | Forecast | Measured | |
| Electricity use | - | 6790 kWh/yr | - |
|---|---|---|---|
| Natural gas use | - | 6906 kWh/yr | - |
| Oil use | - | - | - |
| LPG use | - | - | - |
| Wood use | - | - | - |
| Other Fuel | - | - | - |
| Pre-development | Forecast | Measured | |
| Primary energy requirement | - | 81 kWh/m².yr | - |
|---|---|---|---|
| Annual CO₂ emissions | - | 18 kg CO₂/m².yr | - |
| Annual space heat demand | - | 15 kWh/m².yr | - |
Renewable energy
| Electricity generation | Forecast | Measured |
|---|---|---|
| Photovoltaic | 6705 kWh/yr | - |
| Other Renewables Tech | - | - |
| Electricity consumed by generation | - | - |
| Primary energy requirement offset by renewable generation | 26 kWh/m².yr | - |
| Annual CO₂ emissions offset by renewable generation | 5 kg CO₂/m².yr | - |
Calculation and targets
| Whole house energy calculation method | PHPP |
|---|---|
| Other whole house calculation method | Note forecast space heat and natural gas use based on internal temperature of 20C. |
| Energy target | |
| Other energy targets | - |
| Forecast heating load | - |
Airtightness
| Date | Result | |
| Pre-development air permeability test | - | - |
|---|---|---|
| Final air permeability test | - | 0.33m³/m².hr @ 50 Pascals |
Project description
| Stage | Occupied |
|---|---|
| Start date | 01 March 2009 |
| Occupation date | 07 March 2010 |
| Location | Rochford Essex England |
| Build type | New build |
| Building sector | Public |
| Property type | Detached |
| Construction type | Other |
| Other construction type | Single skin concrete block with external insulation |
| Party wall construction | |
| Floor area | 307 m² |
| Floor area calculation method | Treated Floor Area (PHPP) |
| Building certification |  Passivhaus certified building |
Project Team
| Organisation | Disability Essex |
|---|---|
| Project lead person | Richard Boyd & Stuart Kirk |
| Landlord or Client | Disability Essex |
| Architect | Simmonds.Mills Architects |
| Mechanical & electrical consultant | Alan Clarke |
| Energy consultant | David Olivier |
| Structural engineer | Bob Johnson |
| Quantity surveyor | Bowen Associates |
| Consultant | Maxine Narborough & Solar Century |
| Contractor | DCH Construction |
Design strategies
| Planned occupancy | North WingOffices 10 peopleTraining room: 20-25Foyer: variable |
|---|---|
| Space heating strategy | 1.Extensive passive solar gain.2.Ventilation heat recovery.3.Ground brine loop and heat exchanger, for pre-heating of supply air to MVHR.4. Small domestic (natural gas) boiler and radiators. |
| Water heating strategy | 1. Small domestic (natural gas) boiler2. Solar thermal (evacuated tubes) 3. insulated hot and cold water pipework. |
| Fuel strategy | 1. Natural gas (minimised use of) 2. mains electricity |
| Renewable energy strategy | 1. Photovoltaic panels on freestanding walkway canopy. Not factored in to passivhaus certification. Forecast figure for electricity generated split between the two linked buildings. |
| Passive Solar strategy | Lots of it! |
| Space cooling strategy | 1. Passive ventilation via openable windows2. Summer bypass facility on MVHR.3. Ground brine loop and heat exchanger, for pre-cooling of supply air to MVHR.4. careful design for solar control and shading. |
| Daylighting strategy | Extensive daylighting - using extensive south facing high level glazing. |
| Ventilation strategy | 1. MVHR.2. Natural ventilation for night time cooling and as required |
| Airtightness strategy | Air - vapour membranes to ceilings & windows to plastered blockwork to concrete raft. Careful detailing and workmanship around service penetrations. |
| Strategy for minimising thermal bridges | Thermal bridge free detailing, referencing AECB CarbonLite guidance. |
| Modelling strategy | PHPP. Daylight modelling. |
| Insulation strategy | external wall insulation approaches to walls (areas of Timber clad Larsen trusses and areas of rendered EPS EWI). Load bearing underfloor insulation (below structural raft). Full fill blown insulation to I beam superstructure. Excellent thermal integrity through careful design and workmanship. |
| Other relevant retrofit strategies | NA |
| Contextual information |
Building services
| Occupancy | North WingOffices 16 peopleTraining room: 20-25Foyer: variable |
|---|---|
| Space heating | |
| Hot water | |
| Ventilation | |
| Controls | |
| Cooking | |
| Lighting | |
| Appliances | |
| Renewable energy generation system | |
| Strategy for minimising thermal bridges |
Building construction
| Storeys | |
|---|---|
| Volume | - |
| Thermal fabric area | - |
| Roof description | |
| Roof U-value | - |
| Walls description | |
| Walls U-value | - |
| Party walls description | |
| Party walls U-value | - |
| Floor description | |
| Floor U-value | - |
| Glazed doors description | |
| Glazed doors U-value | - - |
| Opaque doors description | |
| Opaque doors U-value | - - |
| Windows description | |
| Windows U-value | - - |
| Windows energy transmittance (G-value) | - |
| Windows light transmittance | - |
| Rooflights description | |
| Rooflights light transmittance | - |
| Rooflights U-value | - |