42-424
Maximum permitted impact vibration displacement
In all Manufacturing Districts, no activity shall cause or create an impact vibration, at any point on any lot line, with a displacement in excess of the permitted impact vibration displacement for the frequencies as set forth in the following table for the district indicated.
MAXIMUM PERMITTED IMPACT VIBRATION DISPLACEMENT
(in inches)
|
District |
|||
|
Frequency (cycles per second) |
M1 |
M2 |
M3 |
|
10 and below |
.0016 |
.0040 |
.0078 |
|
10 - 20 |
.0010 |
.0020 |
.0044 |
|
20 - 30 |
.0006 |
.0012 |
.0022 |
|
30 - 40 |
.0004 |
.0008 |
.0014 |
|
40 - 50 |
.0002 |
.0006 |
.0010 |
|
50 - 60 |
.0002 |
.0004 |
.0008 |
|
60 and over |
.0002 |
.0002 |
.0008 |
