Engineering Manual
147
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
0.0
5.0
External static pressure 0.30 [in.WG] (75Pa) External static pressure 0.30 [in.WG] (75Pa)
External static pressure 0.50 [in.WG] (125Pa)
External static pressure 0.80 [in.WG] (200Pa)
External static pressure 0.50 [in.WG] (125Pa)
External static pressure 0.80 [in.WG] (200Pa)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
0.0
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
0.0
5.0
External static pressure 0.30 [in.WG] (75Pa)
External static pressure 0.30 [in.WG] (75Pa)
External static pressure 0.50 [in.WG] (125Pa)
External static pressure 0.80 [in.WG] (200Pa)
External static pressure 0.50 [in.WG] (125Pa)
External static pressure 0.80 [in.WG] (200Pa)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
0.0
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
PVA-A36AA7 PVA-A42AA7
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
External static pressure 0.30 [in.WG] (75Pa)
External static pressure 0.50 [in.WG] (125Pa)
External static pressure 0.80 [in.WG] (200Pa)
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
NC-60
NC-50
NC-40
NC-20
NC-30
High
Middle
Low
0.0
5.0
0.0
5.0
External static pressure 0.30 [in.WG] (75Pa) External static pressure 0.30 [in.WG] (75Pa)
External static pressure 0.50 [in.WG] (125Pa)
External static pressure 0.80 [in.WG] (200Pa)
External static pressure 0.50 [in.WG] (125Pa)
External static pressure 0.80 [in.WG] (200Pa)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
0.0
10.0
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
63 125250 5001k2k4k8k
Octave band center frequencies (Hz)
10.0