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OSHA maximum A-weighted sound pressure levels allowed 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)
less than 0.25
Download and print Maximum Allowable Sound Pressure Level per Day chart
Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.
Maximum recommended sound pressure levels in rooms like kindergartens, auditoriums, libraries, cinemas and more.
Acceptable noise -
dB - level at typical common locations. A
The NIOSH noise Recommended Exposure Limit - REL - for occupational noise
The Room Criteria (RC) is used to measure background noise in buildings for frequencies ranging 16 to 4000 Hz.
The EPA A-weighted sound level day and night equivalent definition - L
dn - for a 24 hour period.
The EPA Equivalent Sound Level - L
eq - quantifies the noise environment to a single value of sound level for any desired duration.
The EPA Sound Exposure Level - L
s - describes the noise from a variable source.
Sound Pressure is the force of sound on a surface perpendicular to the propagation of sound.
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