Classroom acoustics design beyond BB93 - refurbishment of a hearing impaired unit in a mainstream primary school

Abstract

Benchmark acoustic testing was carried out for an existing hearing impairment unit within a mainstream primary school, as part of a feasibility study investigating potential for refurbishment vs. rebuild/relocation. Acoustic measurements comprised reverberation time, internal airborne sound insulation and indoor ambient noise level. Although the benchmark testing largely demonstrated compliance with the minimum acoustic performance standards outlined in Building Bulletin 93 for refurbishments, it was also important to consider the results in the wider context of individual school operation and management, and beyond the scope of Building Bulletin 93 performance standards. Interviews with staff and students were carried out to supplement the acoustic measurements and evaluate performance in use. This process revealed additional acoustic problems which were outside the scope of BB93 but were nonetheless challenging for the children and staff learning in the space. Results will be discussed against the scope of BB93 and findings will be useful to inform future design standards, given the Department for Education's refocus on refurbishment of school buildings as part of its target to achieve net zero carbon by 2050.