Mechanical Equipment Noise Level Data

The table below presents example octave-band sound pressure level data measured at 3 ft away from several types of mechanical equipment. In the absence of manufacturer’s or field data, the values in the table may be used for preliminary design purposes if proper consideration is given to situations that may exceed these values. For example, peak values for especially large mechanical equipment can exceed the values in the table by more than 5 dB. Manufacturer’s data should be used only if their test conditions are comparable to the actual installed conditions. Data from field measurements or laboratory tests conducted according to current ANSI, ASTM, or other recognized standards are always preferred and should be obtained for final design.

Reference

“Noise from Construction Equipment and Operations, Building Equipment, and Home Appliances,” U.S. Environmental Protection Agency, NTID 300.1, Washington, December 1971.

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