TABLE 2A
Sound Data Schedule
Equipment
|
Maximum Sound Power Level (dB)_______________
| Octave Band Level Center Frequency (Hz)_________
_____________________|63
| 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000
|
|
|
|
|
|
|
|
Air Handling Unit
| 94 | 90 | 89 | 89 |
89
|
84
|
82
|
79
|
|
|
|
|
|
|
|
Make-Up Air Fan
| 91 | 91 | 80 | 84 |
82
|
76
|
71
|
65
|
|
|
|
|
|
|
|
Air Conditioning Unit| 100 | 96 | 90 | 89 |
86
|
80
|
75
|
72
|
|
|
|
|
|
|
|
Boiler
| 75 | 72 | 72 | 75 |
76
|
63
|
55
|
50
|
|
|
|
|
|
|
|
Chiller
| 98 | 98 | 96 | 95 |
93
|
94
|
88
|
81
|
|
|
|
|
|
|
|
Cooling Tower
| 110 | 110 | 105 | 102 |
98
|
95
|
92
|
87
|
|
|
|
|
|
|
|
Air Compressor
| 90 | 89 | 92 | 93 |
92
|
92
|
90
|
81
|
|
|
|
|
|
|
|
Pump
| 85 | 80 | 82 | 82 |
80
|
77
|
74
|
72
|
|
|
|
|
|
|
|
Fan
| 55 | 50 | 48 | 47 |
48
|
46
|
42
|
37
1.4.6.1
Basic Criteria
For each piece of machinery in the human work environment, do not exceed
the maximum airborne sound levels 84 dB A-weighted scale, continuous or
intermittent, or 140 dB peak sound pressure-level, impact or impulse, noise.
1.4.6.2
Sound Data Schedule
**************************************************************************
NOTE: Depict on drawings one table for each piece
of machinery proposed for the project. Provide
information in project specification, if drawings do
not show the sound data schedule." Depict on the
Table as follows: (1) Machine Airborne Sound Power
Levels (dB) or (2) the Machine Airborne Sound
Pressure Levels (dB) with maximum level expressed in
pressure re 20 uPa or Power re one pW for octave
band level center frequencies in Hz at 63, 125, 250,
500, 1,000, 2,000, 4,000, 8,000 Hz and overall level
dB. Indicate the sound power level or sound
pressure levels, depending upon applicable
measurement standard. Refer to DM-3.10 and TABLE 2A
in below note for sound data selection. Further
details may be found in the current ASHRAE System
Handbook, Chapter entitled "Sound and Vibration
Control." When no standard exists, solicit sound
data from manufacturer and refer to DM-3.10 for
guidance. The dB(A) scale and peak pressure level
noise values specified are stated to preclude adding
requirements of OPNAVFAC INST 5100.23B concerning
hearing conservation and noise abatement programs.
**************************************************************************
SECTION 15070N
Page 23
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