School Building Development

St Catherine's School: BREEAM Case Study

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Project Description:

St Catherine's School is an independent Catholic day school for girls aged 3 to 18. Broadway Malyan has been appointed to design a new building to be located at the heart of the campus to provide the school with a new entrance and teaching facilities. The building is located on a prominent corner which will enhance the image of the school by creating an exciting public arrival space. In addition to this the building will provide additional teaching accommodation for art, photography and drama; as well as a new school kitchen, dining hall, food technology classroom and large lecture theatre which will be used by the local community. The school campus is located on the periphery of the conservation area and is adjacent to a number of grade 2 listed buildings and historical parks. Whilst the design is contemporary and striking it respects the surrounding character of the area and enhances this part of Twickenham.

BREEAM Case Study - School Extension

Area

The gross floor area:
New build gross area 698.5sqm
Existing/refurbishment area – 772.9sqm
Total – 1471.4m2

The total area of the site

0.285 hectares

The area of circulation

394sqm

The area of storage

61.25sqm

A description of the function areas and their size

New build and refurbished teaching and office spaces:
1016.15sqm

 

The % area of grounds to be available for community use

74sqm – community use (external 'atrium' area between reception & fitness suite)
2859sqm – gross area of grounds
2.58% - community use
Community use of the car park out of hours when
accessing community facilities is to be arranged

The % area of buildings to be available for community use

536sqm – community use
1471sqm – gross building area
36.4% - community use
Energy & Water

The anticipated electricity consumption:
72,096kWh per annum

The anticipated fossil fuel consumption:
16,075kWh per annum

The anticipated renewable energy generation:

A solar hot water array will be located on the roof with a biomass boiler contributing to the heating of the school.

Predicted on-site energy generation Biomass:
37,657kWh per annum
Predicted on-site energy generation Solar Hot Water:
15,530kWh per annum

The anticipated water use:

3.9 cubic m/pupil per annum
Water reduction management practices will be adopted in conjunction with water efficient appliances such as aerated
taps

The anticipated % of water to be provided by rainwater and grey water

Approximately 5% in the form of rainwater butts to recycle water for non-potable use eg irrigation
Sustainability

BREEAM rating & score
Very good (final score pending)

The key innovative and low-impact design features

Low e double glazing
High Efficiency boiler
Daylight controls in rooms
Occupancy sensing in wcs, storerooms & changing areas
Biomass boiler & solar hot water array

 

The innovative construction management techniques used to reduce the environmental impact

In addition to adhering to the 'Considerate Contractor' requirements, a Site Waste Management Plan (SWMP) was used by the contractor which
included procedures for segregating waste into separate types for re-use and recycling.

Monitoring processes also allowed records to be kept of where each waste stream ended up (landfill/recycled / re-used)

Any social or economically sustainable measures achieved/piloted

A new bin store/recycling compound will be located to the rear of the car park.

Improvements were made to the existing parts of the school as required by current building regulations.

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