V6-i VRF 50Hz
75
P
art
2
- O
ut
do
or
Unit
Engineer
ing Da
ta
Figure 2-10.3: 9HP octave band level
O
ct
av
e b
an
d
so
un
d
pr
e
ss
ur
e
le
ve
l (
dB
(A
)
Octave band center frequency (Hz)
Figure 2-10.4: 10/12HP octave band level
O
ct
av
e b
an
d
so
un
d
pr
e
ss
ur
e
le
ve
l (
dB
(A
)
Octave band center frequency (Hz)
10
20
30
40
50
60
70
80
90
63
125
250
500
1000
2000
4000
8000
10
20
30
40
50
60
70
80
90
63
125
250
500
1000
2000
4000
8000
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
Approximate minimum
audible limit on
continuous noise
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
Approximate minimum
audible limit on
continuous noise