Residence Districts
Frequency Band (cycles per second) | Sound-Pressure Level (in decibels re 0.0002 microbar) | |
|---|---|---|
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 9,600 | 28 |
Type of Operation or Character of Noise | Correction (in decibels) | |
|---|---|---|
Daytime operation only | +5 | |
Noise source operates less than 20% of the time | +5* | |
Noise source operates less than 5% of the time | +10* | |
Noise source operates less than 1% of the time | +15* | |
Noise of impulsive character (hammering, etc.) | -5 | |
Noise of periodic character (hum, screech, etc.) | -5 |
*NOTE: Applying one of these corrections only. | ||
Minimum Lot Area (square feet) | Maximum Number of Hens or Other Fowl |
|---|---|
5,000 | 3 |
10,000 | 4 |
15,000 | 5 |
20,000 | 6 |
30,000 | 7 |
40,000 or greater | 8 |
Residence Districts
Frequency Band (cycles per second) | Sound-Pressure Level (in decibels re 0.0002 microbar) | |
|---|---|---|
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 9,600 | 28 |
Type of Operation or Character of Noise | Correction (in decibels) | |
|---|---|---|
Daytime operation only | +5 | |
Noise source operates less than 20% of the time | +5* | |
Noise source operates less than 5% of the time | +10* | |
Noise source operates less than 1% of the time | +15* | |
Noise of impulsive character (hammering, etc.) | -5 | |
Noise of periodic character (hum, screech, etc.) | -5 |
*NOTE: Applying one of these corrections only. | ||
Minimum Lot Area (square feet) | Maximum Number of Hens or Other Fowl |
|---|---|
5,000 | 3 |
10,000 | 4 |
15,000 | 5 |
20,000 | 6 |
30,000 | 7 |
40,000 or greater | 8 |