Special Regulations
Maximum Permitted Steady State Vibration Displacement | |
|---|---|
Frequency (cycles per second) | Displacement (inches) |
10 and below | 0.0008 |
10 to 20 | 0.0005 |
20 to 30 | 0.0003 |
30 to 40 | 0.0002 |
40 to 50 | 0.0001 |
50 to 60 | 0.0001 |
60 and over | 0.0001 |
Maximum Permitted Impact Vibration Displacement | |
|---|---|
Frequency (cycles per second) | Displacement (inches) |
10 and below | 0.0016 |
10 to 20 | 0.0010 |
20 to 30 | 0.0006 |
30 to 40 | 0.0004 |
40 to 50 | 0.0002 |
50 to 60 | 0.0002 |
60 and over | 0.0002 |
Frequency Band (cycles per second) | Sound Pressure Level (decibel re 0.0002 dyne/cm2) |
|---|---|
20 to 75 | 69 |
75 to 150 | 54 |
150 to 300 | 47 |
300 to 600 | 41 |
600 to 1,200 | 37 |
1,200 to 2,400 | 34 |
2,400 to 4,800 | 31 |
4,800 to 10,000 | 28 |
The Board may waive documentary requirements as it deems appropriate. |
Special Regulations
Maximum Permitted Steady State Vibration Displacement | |
|---|---|
Frequency (cycles per second) | Displacement (inches) |
10 and below | 0.0008 |
10 to 20 | 0.0005 |
20 to 30 | 0.0003 |
30 to 40 | 0.0002 |
40 to 50 | 0.0001 |
50 to 60 | 0.0001 |
60 and over | 0.0001 |
Maximum Permitted Impact Vibration Displacement | |
|---|---|
Frequency (cycles per second) | Displacement (inches) |
10 and below | 0.0016 |
10 to 20 | 0.0010 |
20 to 30 | 0.0006 |
30 to 40 | 0.0004 |
40 to 50 | 0.0002 |
50 to 60 | 0.0002 |
60 and over | 0.0002 |
Frequency Band (cycles per second) | Sound Pressure Level (decibel re 0.0002 dyne/cm2) |
|---|---|
20 to 75 | 69 |
75 to 150 | 54 |
150 to 300 | 47 |
300 to 600 | 41 |
600 to 1,200 | 37 |
1,200 to 2,400 | 34 |
2,400 to 4,800 | 31 |
4,800 to 10,000 | 28 |
The Board may waive documentary requirements as it deems appropriate. |