Further details

Who needs to know about Building Bulletin 93?

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 from Part E of Schedule 1 of The Building Regulations 2000 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’.

How we can help you with BB93 compliance

We offer a range of services to solve your classroom and school acoustics issues in relation to BB93:

  • Acoustic design consultancy
  • Speech intelligibility – reverberation time measurement and prediction
  • Noise surveys to demonstrate compliance – accredited sound insulation testing

Speech intelligibility and computer prediction

We have particular expertise in relation to Section 1 of BB93 which contains performance standards for speech intelligibility in open plan spaces.

The guidance in BB93 states that a computer prediction model should be used to calculate speech intelligibility using the Speech Transmission Index (STI) in the open plan space.

We have carried out extensive speech intelligibility prediction exercises using computer prediction models for BB93 compliance.

Building Bulletin 93 can be found at Teacher Net