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# Sound Pressure Level - OSHA A-Weighted per Day

Maximum A-weighted sound pressure levels allowed by the U.S. Occupational Safety and Health Administration - OSHA -  for periods in a working day:

Sound Pressure Level - OSHA A-Weighted per Day
Duration per Day
(hr)
Maximum Allowed Sound Pressure Level
(dBA)
8 90
6 92
4 95
3 97
2 100
1.5 102
1 105
0.5 110
less than 0.25 115

## Related Topics

### • Acoustics

Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.

## Related Documents

### Maximum Sound Pressure Levels in Rooms

Maximum recommended sound pressure levels in rooms like kindergartens, auditoriums, libraries, cinemas and more.

### Noise - Acceptable dBA Level

Acceptable noise - dBA - level at typical common locations.

### Noise - Recommended Exposure Limits (REL)

The NIOSH noise Recommended Exposure Limit - REL - for occupational noise

### RC - the Room Criteria

The Room Criteria (RC) is used to measure background noise in buildings for frequencies ranging 16 to 4000 Hz.

### Sound - Ldn - Day and Night Level

The EPA A-weighted sound level day and night equivalent definition - Ldn - for a 24 hour period.

### Sound - Leq - Equivalent Level

The EPA Equivalent Sound Level - Leq - quantifies the noise environment to a single value of sound level for any desired duration.

### Sound - Ls - Exposure Level

The EPA Sound Exposure Level - Ls - describes the noise from a variable source.

### Sound Pressure

Sound Pressure is the force of sound on a surface perpendicular to the propagation of sound.

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