BS8233: 1999: 'Sound Insulation and Noise Reduction for Buildings - Code of Practice' replaced the previous 1987 edition and incorporated significant revisions which took account of changes in legislation and official guidance, including changes in the guidance provided by the World Health Organisation (WHO) on noise targets for residential accommodation.
The document includes useful background acoustical information including noise spectra for road traffic, civil jet aircraft and railways, and definitions for a number of acoustical terms.
Table 5 of the document sets out maximum
ambient noise level targets for spaces within buildings when unoccupied (ie in the absence of noise from the occupants of these spaces) with the aim of providing an appropriate level of acoustic comfort in commercial premises and suitable conditions for resting and sleeping in residential accommodation. Guidance is also provided on noise targets for outdoor living areas such as gardens and balconies etc.
Table 6 sets out minimum
ambient noise level targets for spaces within buildings when unoccupied (ie in the absence of noise from the occupants of these spaces) with the aim of providing an appropriate level of acoustic privacy in spaces such as restaurants and open plan offices.
The noise targets for residential accommodation set out in Table 5 are generally lower then those which were included in the 1987 edition, and may be difficult to achieve in busy urban locations or at
sites near significant noise sources such as busy road, railways and airports. Similarly, the targets for outdoor living areas may be difficult to achieve in these locations.
The current edition of BS8233 also includes useful information on sound insulation within residential properties, Noise Rating (NR) Curves and sound insulation properties of some building materials
and forms of construction.
Auracle Acoustics is able to provide advice on the interpretation and implementation of all aspects of BS8233: 1997, and is able to assist in the achievement of its noise targets where appropriate.