TM5-3810-305-10
Decibel Level Chart
Exposing the unprotected human ear to sound
levels above 85 dB (measured on the “A” scale)
for prolonged periods can result in permanent
hearing loss.
Within the 85-dB envelope, hearing protection is
In order to avoid hearing loss, ear plugs or
required. Failure to follow this procedure could
other suitable protective devices should be worn
cause SERIOUS INJURY.
when working within the 85 dBA envelope (40 ft
maximum from the nearest surface of the crane)
N O T
E
as shown on Figure 1-3.
Sound levels in the operators cab can reach 87
Radius dimensions illustrated in Decibel Level
dBA with the cab closed and therefore operators
Chart are from center of rotation. Points on the
should wear hearing protection while operating
profile are from nearest surface of the crane.
the LRT 110 Crane.
1-10
Figure 1-3. Decibel Level Chart - 85 - dB Profile
