BS 8233:1999

Committees responsible
Foreword
Introduction
1 Scope
2 Terms and definitions
3 Symbols
4 Measuring equipment and accuracy
5 Planning and design
6 External noise sources
7 Specific types of building
8 Sound insulation in buildings and control of
      noise from building services
Annex A (informative) Noise calculations
Annex B (informative) Noise rating
Annex C (informative) Specification of sound insulation
Annex D (informative) Special problems requiring
                      expert advice
Annex E (informative) Airborne and impact sound insulation
Bibliography
Figure 1 - Normalized road traffic noise spectrum
           derived from BS EN 1793-3: 1998
Figure 2 - Typical contours around an airport
Figure 3 - Average noise spectra of a jet airliner after
           take-off and before landing
Figure 4 - Train noise spectra with mark 2 and mark 3
           coaches measured at 25 m from the track centre
           line, in a free field, at 160 km/h and on
           'good quality' conventially ballasted track
           with continuously welded rail
Figure 5 - Characteristics of sound absorbing materials
Figure A.1 - The addition of two noise levels
Figure A.2 - Subtraction of noise levels
Figure A.3 - Sound insulation of non-uniform partitions
Figure E.1 - Transmission paths (via the structure) of
             noise originating in room 1 (diagrammatic)
Figure E.2 - Indirect sound leakage paths
Figure E.3 - Mass law curve
Table 1 - Symbols
Table 2 - Typical traffic noise levels measured about
            1 m from the facade
Table 3 - Data used in the calculation of the noise level
            inside a room
Tabel 4 - The calculation
Table 5 - Indoor ambient noise levels in spaces when they
            are unoccupied
Table 6 - Indoor ambient noise levels in spaces when they
            are unoccupied and privacy is also important
Table 7 - Maximum steady noise levels for reliable speech
            communication
Table 8 - Guide to reverberation time T at 500 Hz in
            unoccupied rooms for speech and music
Table 9 - Typical sound insulation specification for wall
            separating two cinema screens
Table 10 - Sound insulation of typical windows
Table 11 - The sound insulation of roofs
Table A.1 - Standard A-weighting values (dB)
Table B.1 - Noise rating values
Table B.2 - Values of a and b
Table C.1 - Common indices used to describe airborne and
            impact sound insulation
Table E.1 - Sound insulation of imperforate sheet materials
Table E.2 - Airborne sound insulation of walls and
            partitions
Table E.3 - Airborne and impact sound insulation of floor
            constructions

Recommendations for the control of noise in and around buildings and suggestions for appropriate criteria and limits for different situations. Room acoustics for simple situations is covered, but the design of buildings where the acoustics are critical, such as auditoria, is outside the scope.