Building Bulletin 93 (BB93)... 

The aim of Building Bulletin 93 (BB93) is to provide a comprehensive guide for architects, building control bodies, building services engineers, and others involved in the design of new school buildings.

BB93 gives the performance targets for compliance with Requirement E4 of The Building Regulations Approved Document E that "each room or other space in a school building shall have the acoustic conditions and the sound insulation against disturbance by noise appropriate to its normal use".

Acoustic performance standards are specified for the following:

indoor ambient noise levels
airborne sound insulation between spaces
impact sound transmission of floors to spaces below
reverberation times in teaching and study spaces
areas of sound absorbing finishes in circulation spaces
speech intelligibility in open-plan spaces

All school buildings must conform to BB93 and are subject to detailed design checks and on-site inspections. The document BB93 can be found at www.teachernet.gov.uk/acoustics

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