BS CP153-3(1972) : 1972

Foreword
1. GENERAL
1.1 Scope
1.2 Performance and costs
1.3 Types of windows
2. MEASUREMENT OF SOUND
2.1 The decibel scale
2.2 Loudness
2.3 The dB(A) scale
3. CONTROL OF NOISE
3.1 Transmission of sound
3.2 Sound insulation
4. THE SOUND INSULATION PERFORMANCE OF WINDOWS
      AND ROOFLIGHTS
4.1 Effect of openings
4.2 Ventilation
4.3 Performance categories
4.4 Field and laboratory measurements
4.5 Design principles
4.6 Rooflights
4.7 Thermal effects of double windows installed
      primarily for sound insulation
5. NOISE LEVELS
5.1 External noise climate
5.2 Desirable limits for intrusive noise in buildings
5.3 Sound insulation requirements
5.4 Effects of height of buildings
6. THE SELECTION OF WINDOW TYPES AND SIZES
6.1 Effects of building design and siting
6.2 Curtain walling
6.3 Fixed and openable windows
6.4 Use of double windows
6.5 Automatically controlled windows
7. SONIC BOOMS
7.1 Effects on windows
APPENDIX
A. Further reading
TABLES
1. Sound insulation values for closed windows
2. Range of noise levels at locations in which traffic
      noise predominates
3. Tolerable noise levels (not exceeded for more than
      10% of the time)
4. Effect of window size on the sound insulation of
      40 dB and 50 dB external walls
FIGURE
1. Analysis of traffic noise and window insulation

Describes sound transmission through windows, rooflights and glazed curtain walling. An extension, of the more basic information on sound transmission and insulation in buildings is given in CP 3: Chapter III. Covers performance and costs, types of windows, measurement of sound, control of noise, the sound insulation performance of windows and rooflights, noise levels, the selection of window types and sizes and sonic booms.