Good Practices on the Control of Noise from Electrical & Mechanical Systems
Statutory Control Over Noise  |  Noise Prediction  |  Typical Sound Power Levels of Electrical & Mechanical Equipment  |  Complete Enclosures  |  Partial Enclosures  |  Barriers  |  Inertia Blocks  |  Vibration Isolators  |  Silencers  |  Floating Floors  |  Acoustic Louvres  |  Soundproof Doors  |  Vibration Identification Guide  |  Guidelines for Centrifugal and Axial Fan Installation  |  Examples of Practical Noise Control Measures  |  Reference  |  Other Relevant Noise Control Materials
 

Soundproof Doors

The sound insulation provided by a door depends not only on the type of door but also on installation details (e.g. the gaskets around the perimeter). Generally, rubber or plastic compression seals, which are set around the door edges, provide the best result of insulation when closing the door. The degree of sound insulation of a door is usually specified by sound transmission class (STC). Table 18 gives typical STC values of some conventional types of doors. However, if doors are required to have STC values greater than 30, it is recommended that packaged soundproof door units are to be employed. They are usually supplied with them fixed in a frame together with suitable seals. A variety of soundproof doors is available in the market, offering average STC values up to 45 which is equivalent to a 112mm brick wall.

Table 18: Sound Transmission Class of Doors

Figure 58: Soundproof door

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