The Code of practice for noise and vibration control on construction and open sites BS 5228-1 2009, refers to the need to reduce noise levels, which local Authorities often requires to be considered as part of planning permission. By introducing a noise barrier that provides a at least 10 dB noise level at low frequency (like at 100 Hz) the general noise level is cut in half. Breakout noise is the biggest concern as this may account for 5-10dB noise level, so correct installation is as crucial as the noise reduction from the sheeting material itself. Breakout noise often comes from gaps or the actual installation fixings, so sealed fixing points or overlaps are crucial and Monarflex MonarSound FlameSafe acoustic scaffold sheeting provides these.
Acoustic Control
There are no guidelines for rating the performance of scaffold sheeting. However, BS EN-1793-2: 1998 “Road traffic noise reducing devices - Test method for determining the acoustic performance” allows for the method for categorising the sound reduction performance of barriers that may be used to control road traffic noise.
Source room volume: 150.00 m²
Receiving room volume V: 48.00m²
Frequency
f
HZ |
Dn T
1/3 Octave
dB |
Rating according to ISO 717-1
D nt,w (C;C tr) = 19 (0; -2) dB
Evaluation based on field measurement results obtained in one-third-octave bands by an engineering method.
C 50-3150 = 0dB; C 50-5000 = 0dB; C 100-5000 = 0dB;
C tr, 50-3150 = -2db; C tr,50-5000 = -2dB; C tr, 100-5000 = -2dB;
|
50
63
80 |
13.2
18.8
16.4 |
100
125
180 |
17.9
15.3
15.0 |
200
250
315 |
15.3
14.5
14.6 |
400
500
630 |
14.4
15.7
16.0 |
800
1000
1250 |
16.8
18.1
18.9 |
1600
2000
2500 |
20.1
21.8
23.0 |
3150
4000
5000 |
24.3
25.9
27.9 |