BB93 Building Bulletin 93 – Our Summary
BB93 is a document published by the Department for Education in England stating the minimum performance standards for acoustics in schools. The idea behind the document is to ensure that school buildings provide the right acoustic conditions to enable effective teaching and learning.
BB93 is used by acoustic consultants, architects, developers and designers to aid the design and testing of new and refurbished school buildings in the UK.
Why the acoustic design of schools is important
The impact of poor acoustics in education buildings is to make it harder for teachers and pupils to be heard clearly. To achieve the right environment, factors such as noise break-in from external sources and reverberation within the room need to be addressed. The amount of sound absorption and sound insulation must all take in to consideration things like room size and layout.
Below are some examples of BB93 performance standards that can be found in the document:
- Indoor background noise levels when rooms are unoccupied.
- Sound insulation between teaching rooms and other spaces
- Sound insulation of floors and ceilings
- Reverberation in teaching and study spaces
- Noise control in sports hall and swimming pools.
- Sound absorption in corridors and stairwells.
- Open plan teaching spaces
Acoustic design is vital in achieving the required performance standards for school buildings. There is no ‘one size fits all’ solution to noise control due to the variation in external noise influences, internal noise from services and other classrooms etc.
Prior to the completion of the project, testing has to be carried out by a qualified acoustic consultant. They will follow procedures set by the building bulletin 93 document. Following testing, reports can be issued to building control to check against building regulations before approval and sign off.