This British Standard provides guidance for the control of noise in and around buildings. It is applicable to the design of new buildings, or refurbished buildings undergoing a change of use, but does not provide guidance on assessing the effects of changes in the external noise levels to occupants of an existing building. This British Standard does not cover: specialist applications, such as auditoria and cinemas (for cinemas, see BSISO9568); vibration control, except where it is evident in the form of radiated sound; or noise that breaks out from the building that might affect external receptors. NOTE AnnexA describes some of the simpler types of noise calculation. A method of rating noise is described in AnnexB. Methods of measurement of sound insulation are described in AnnexC. AnnexD outlines some special problems requiring expert advice. AnnexE describes airborne and impact sound insulation. AnnexF sets out the legislative framework applicable to noise producing developments. AnnexG provides example calculations for resolving a typical design problem. Examples of design criteria adopted by various hotel groups are included for reference in AnnexH.