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BS4142 Survey & Assessment

BS414 describes the method for determining the 1) external noise level 'from factories, industrial premises or fixed installations and sources of an industrial nature in commercial premises', and 2) the background noise level, measured in the absence of any noise from the industrial source. This data is then used to calculate the likelihood of complaint arising as a result of the industrial noise source. It is the job of the acoustic consultant to conduct the survey, assess the likelihood of complaints, and compile a report detailing the findings. In some cases, the findings may require some form of noise control work to reduce and/or attenuate the noise, so that the likelihood of complaints is lessened.

BS8233 Survey & Assessment

BS8233 is a wide-ranging document which covers many aspects of noise in buildings but includes recommended "Reasonable" and "Good" noise climates. Of most significance to environmental noise assessments are the levels given for living rooms and bedrooms. Local authorities will request this survey in areas where there are existing noise sources such as entertainment noise from establishments, roads, and railways. It is the job of the acoustic consultant to survey the proposed site, and create a technical report advising the client how to achieve the guidance outlined in BS8233 with regards to sound insulation and noise reduction for buildings.

Noise at Work 2005 Regulations / Occupational Noise Survey

The Noise at Work 2005 Regulations set permitted limits for the daily & weekly noise exposure, and peak noise levels employees are allowed to be exposed to in workplace. A consultant will question your employees as to their daily/weekly work patterns, and use noise data taken from a comprehensive survey of the workplace to calculate each employee type's daily/weekly noise exposure (whichever is most relevant). Dependent on the findings of the assessment, it may be found that some employees must wear hearing protection, or that certain areas/machines/processes cannot be entered or used without mandatory hearing protection. It is important to remember that noise-induced hearing loss is cumulative - the damage done from excessive noise can not be repaired.

BB93 / Schools

Building Bulletin 93 governs the acoustic requirements for schools, ranging from the minimum requirements for sound insulation, to speech intelligibility, internal
ambient noise levels and reverberation times of teaching areas. At planning stage, a variety of acoustic variables must be determined ranging from site suitability,
building envelope design, glazing specifications amongst many others. An acoustic professional will undertake a survey of the proposed site to assist in the creation of
a technical report. A new document entitled "Acoustic Performance Standards for the Priority Schools Building Programme September 2012" is to be released in 2013
which updates the various requirements that BB93 currently governs, and this will become the reference point for acoustic design & testing targets for schools upon its
roll out.

BS6472 Survey

BS6472 contains guidance on the evaluation of vibration with respect to human response. A BS6472 survey is likely to requested when a proposed development is situated in the vicinity of a significant source of vibration - such as a railway line. An acoustic consultant would conduct a survey, and produce a technical report to calculate the vibration dose value (also known as VDV) which in turn is used to assess the likelihood of adverse comment as a result of vibration.

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