| Table
4 - Summation of Noise Levels |
| Difference
in dB(A) between two noise levels being summed |
Amount
in dB(A) to add to the higher noise level |
| 0
to 0.5 |
3.0 |
| 1.0
to 1.5 |
2.5 |
| 2.0
to 3.0 |
2.0 |
| 3.5
to 4.5 |
1.5 |
| 5.0
to 7.0 |
1.0 |
| 7.5
to 12.0 |
0.5 |
| more
than 12.0 |
0
|
When using
Table 4 noise levels should be summed in a pairwise fashion
and the final total rounded to the nearest whole dB(A), with
values of 0.5 or more being rounded upwards.
|
|