BSRIA (Building Services Research & Information Association) is a not-for-profit test, instrumentation, research and consultancy organisation, providing specialist assistance to the construction and building services sectors.  BSRIA has ongoing research programmes and produces industry-recognised best practice guidance. It also offers a wide range of services to help companies improve the design, building and operation of […]


BREEAM (Building Research Establishment Environmental Assessment Method) is a rating system to evaluate the environmental impact of a building. It sets the standard for best practice in sustainable building design, construction and operation. Since its introduction in 1990, the BREEAM assessment method has been applied to over 200,000 buildings throughout the UK.  A BREEAM assessment […]

Boosted Cold Water Manifolds (BCW)

Boosted cold water (BCW) is required when the cold water tank is located lower than user level in a building, so that water needs to be pumped upwards for distribution. A BCW system typically comprises a cold water storage tank that supplies a number of pumps. These deliver water to a large bore riser pipe(s) for […]

BESA HIU Testing

The purpose of BESA testing is to enable the performance of commercially available HIUs to be evaluated under operating conditions associated with the UK. The test regime is focussed on twin-plate HIUs with heating and DHW loads typical of new flat developments and small to mid-sized houses. This is to provide comparative information to the […]

BB101 Ventilation

BB101 contains the guidelines issued by the Education & Skills Funding Agency, to address the Ventilation, Thermal Comfort and Indoor Air Quality in Schools. BB101 was finally re-issued in August 2018.  It provides guidance on draught, carbon dioxide levels and temperature criteria based on an adaptive approach. It prescribes filtration standards and refers to BB93 […]


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