Building Bulletin 93 (BB93) Acoustic Assessment
A new single-storey building to provide additional classrooms was built at Notre Dame Prep School in Norwich. The school is a leading independent preparatory school and the new building was required to comply with Building Bulletin 93 (BB93) “Acoustic Design of Schools”.
Environmental Noise Survey
IEC carried out an environmental noise survey to establish the existing ambient noise levels at the location of the building in order to advise on a façade insulation scheme to mitigate noise ingress. Rain noise was also considered as part of the assessment.
Sound Insulation Testing
The airborne sound insulation performance of internal separating walls between classrooms and adjoining offices was calculated, as well noise transfer from circulation spaces. Recommendations for internal separating walls and associated flanking structures were made to meet BB93 sound insulation requirements.
Reverberation times of each space were considered and the amount of additional sound absorption required to allow good speech intelligibility determined.
Independent Environmental Consultancy Limited was established in 2005 and provides noise, vibration and air quality consultancy services. The company is a member of the Association of Noise Consultants and consultants are Corporate Members of the Institute of Acoustics, Institution of Environmental Sciences and Institute of Air Quality Management.
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