Technical Memorandum on Noise from Percussive Piling

Table 4 - Correction Factors to Obtain the Predicted Noise Level(PNL) from Sound Power Level at Given Distances
Distance (m) Correction (dB(A))
0 17
1 17
2 20
3 21
4 23
5 24
6 24
7 25
8 26
9 27
10 29
11 30
12 30
13 31
14 32
15 33
16 33
17 34
18 34
19 35
20 to 21 36
22 to 24 37
25 to 26 38
27 to 29 39
30 to 32 40
33 to 36 41
37 to 39 42
40 to 43 43
44 to 48 44
49 to 53 45
54 to 59 46
60 to 65 47
66 to 72 48
73 to 79 49
80 to 87 50
88 to 96 51
97 to 107 52
108 to 118 53
119 to 130 54
131 to 144 55
145 to 159 56
160 to 175 57
176 to 193 58
194 to 214 59
215 to 236 60
237 to 260 61
261 to 288 62
289 to 317 63
318 to 351 64
352 to 387 65
388 to 427 66
428 to 472 67
473 to 521 68
522 to 575 69
576 to 635 70
636 to 700 71

 

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