Offices Nationwide

Good Hearing?
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more

How loud is too loud?
Noise above 85 dBA over time will cause hearing loss. In general, the louder the noise, the less time required before hearing loss...more
Our other services include:
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C4SH can also be known as:
CSH, Code for Sustainable Homes, Sustainable Homes, Code Assessment, Code for Sustainable Homes Daylight Calculation,
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Company No. 06728970
In Area I
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