|
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Distance (m) | Correction (dB(A)) | ||||
0 | 8 | ||||
1 | 8 | ||||
2 | 14 | ||||
3 | 18 | ||||
4 | 20 | ||||
5 | 22 | ||||
6 | 24 | ||||
7 | 25 | ||||
8 | 26 | ||||
9 | 27 | ||||
10 | 28 | ||||
11 | 29 | ||||
12 | 30 | ||||
13 | 30 | ||||
14 | 31 | ||||
15 to 16 | 32 | ||||
17 to 18 | 33 | ||||
19 to 21 | 34 | ||||
22 to 23 | 35 | ||||
24 to 26 | 36 | ||||
27 to 29 | 37 | ||||
30 to 33 | 38 | ||||
34 to 37 | 39 | ||||
38 to 41 | 40 | ||||
42 to 47 | 41 | ||||
48 to 52 | 42 | ||||
53 to 59 | 43 | ||||
60 to 66 | 44 | ||||
67 to 74 | 45 | ||||
75 to 83 | 46 | ||||
84 to 93 | 47 | ||||
94 to 105 | 48 | ||||
106 to 118 | 49 | ||||
119 to 132 | 50 | ||||
133 to 148 | 51 | ||||
149 to 166 | 52 | ||||
167 to 187 | 53 | ||||
188 to 210 | 54 | ||||
211 to 235 | 55 | ||||
236 to 264 | 56 | ||||
265 to 300 |
57 |
For the purpose of determining the correction to be used for converting from sound power level at the source to the PNL at the NSR, the distance from the source position to the NSR shall be determined to the nearest whole metre, with values of 0.5 or more being rounded upwards.
This table is only valid for distances of up to 300 m. For distances greater than 300 m the Authority shall calculate appropriate correction factors having regard to standard acoustical principles and practices.