Performance Standards
Center Frequency (cycles per second) | Maximum Permitted Sound-Pressure Level (decibels) |
|---|---|
31.5 | 65 |
63 | 67 |
125 | 66 |
250 | 59 |
500 | 52 |
1,000 | 46 |
2,000 | 37 |
4,000 | 26 |
8,000 | 17 |
(Sound pressure level in decibels equals 0.0002 dynes/cm.) | |
Center Frequency (cycles per second) | Maximum Permitted Sound-Pressure Level (decibels) |
|---|---|
31.5 | 76 |
63 | 74 |
125 | 68 |
250 | 63 |
500 | 57 |
1,000 | 52 |
2,000 | 45 |
4,000 | 38 |
8,000 | 32 |
(Sound pressure level in decibels equals 0.0002 dynes/cm.) | |
PV | = | 6.28 F x D, where: |
PV | = | Particle velocity, inches per second |
F | = | Vibration frequency, cycles per second |
D | = | Single amplitude displacement of the vibration in inches |
Maximum Ground Transmitted Vibration | ||
|---|---|---|
Particle Velocity (inches/second) | ||
Zoning District | Adjacent Lot Line | Residential District |
Residential and Conservation | 0.02 | 0.02 |
Work and Service | 0.10 | 0.02 |
Performance Standards
Center Frequency (cycles per second) | Maximum Permitted Sound-Pressure Level (decibels) |
|---|---|
31.5 | 65 |
63 | 67 |
125 | 66 |
250 | 59 |
500 | 52 |
1,000 | 46 |
2,000 | 37 |
4,000 | 26 |
8,000 | 17 |
(Sound pressure level in decibels equals 0.0002 dynes/cm.) | |
Center Frequency (cycles per second) | Maximum Permitted Sound-Pressure Level (decibels) |
|---|---|
31.5 | 76 |
63 | 74 |
125 | 68 |
250 | 63 |
500 | 57 |
1,000 | 52 |
2,000 | 45 |
4,000 | 38 |
8,000 | 32 |
(Sound pressure level in decibels equals 0.0002 dynes/cm.) | |
PV | = | 6.28 F x D, where: |
PV | = | Particle velocity, inches per second |
F | = | Vibration frequency, cycles per second |
D | = | Single amplitude displacement of the vibration in inches |
Maximum Ground Transmitted Vibration | ||
|---|---|---|
Particle Velocity (inches/second) | ||
Zoning District | Adjacent Lot Line | Residential District |
Residential and Conservation | 0.02 | 0.02 |
Work and Service | 0.10 | 0.02 |