The function of a space governs its acoustics requirements. Spaces which need to be quiet and where speech intelligibility is important require a low reverberation time.
BB93 ‘Acoustics Design for Schools’
Table 1.5 of BB93 provides a comprehensive list of performance requirements for educational spaces. This table is used as a benchmark for many buildings including multifunctional buildings and higher educational facilities.
BREEAM Offices
At present BREEAM Offices does not provide performance requirements with respect to room acoustics, therefore the 1 second reverberation time BB93 requirement for offices is commonly used.
HTM - Health Technical Memorandum Acoustics
HTM states that ‘Sound-absorbent treatment should be provided in all areas (including all corridors), except acoustically unimportant rooms (storerooms etc), where cleaning, infection control, patient-safety, clinical and maintenance requirements allow.
Acoustically-absorbent materials should have a minimum absorption area equivalent to a Class C absorber (as defined in BS EN ISO 11654:1997) covering at least 80% of the area of the floor, in addition to the absorption that may be provided by the building materials normally used. If a Class A or B absorbent material is used, less surface area is needed.
Acoustic absorption is likely to be needed in large open spaces such as atria, particularly in localised areas.
MACH Acoustics advises that an acoustic consultant be appointed to undertake a detailed assessment if an alternative to ceiling tiles is to be used.
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