Modified Planned Industrial Park District
Frequency Band (cycles per second) | Sound Pressure Level (decibels re 0.0002 dyne/cm2) | |
|---|---|---|
20 - 75 | 69 | |
75 - 150 | 60 | |
150 - 300 | 56 | |
300 - 600 | 51 | |
600 - 1,200 | 42 | |
1,200 - 2,400 | 40 | |
2,400 - 4,800 | 38 | |
4,800 - 10,000 | 35 |
Frequency Band (cycles per second) | Sound Pressure Level (decibels re 0.0002 dyne/cm2) | |
|---|---|---|
20 - 75 | 65 | |
75 - 150 | 50 | |
150 - 300 | 43 | |
300 - 600 | 38 | |
600 - 1,200 | 33 | |
1,200 - 2,400 | 30 | |
2,400 - 4,800 | 28 | |
4,800 - 10,000 | 26 |
Type of Operation in Character of Noise | Correction in Decibels | |
|---|---|---|
Daytime operation only | Plus 5 | |
Noise source operates less than 20% of any 1-hour period | Plus 5* | |
Noise source operates less than 5% of any 1-hour period | Plus 10* | |
Noise source operates less than 1% of any 1-hour period | Plus 15* | |
Noise of impulsive character (hammering, etc.) | Minus 5 | |
Noise of periodic character (hum, screech, etc.) | Minus 5 |
*NOTE: Apply one of these corrections only. |
Floor Area (square feet) | Loading Spaces Required* | |
|---|---|---|
5,000 to 10,000 | 1 | |
10,000 to 20,000 | 2 | |
20,000 to 40,000 | 3 | |
40,000 to 60,000 | 4 | |
Each 50,000 over 60,000 | 1 additional |
*NOTE: In the case of office buildings, not more than two spaces shall be required in any case. |
Modified Planned Industrial Park District
Frequency Band (cycles per second) | Sound Pressure Level (decibels re 0.0002 dyne/cm2) | |
|---|---|---|
20 - 75 | 69 | |
75 - 150 | 60 | |
150 - 300 | 56 | |
300 - 600 | 51 | |
600 - 1,200 | 42 | |
1,200 - 2,400 | 40 | |
2,400 - 4,800 | 38 | |
4,800 - 10,000 | 35 |
Frequency Band (cycles per second) | Sound Pressure Level (decibels re 0.0002 dyne/cm2) | |
|---|---|---|
20 - 75 | 65 | |
75 - 150 | 50 | |
150 - 300 | 43 | |
300 - 600 | 38 | |
600 - 1,200 | 33 | |
1,200 - 2,400 | 30 | |
2,400 - 4,800 | 28 | |
4,800 - 10,000 | 26 |
Type of Operation in Character of Noise | Correction in Decibels | |
|---|---|---|
Daytime operation only | Plus 5 | |
Noise source operates less than 20% of any 1-hour period | Plus 5* | |
Noise source operates less than 5% of any 1-hour period | Plus 10* | |
Noise source operates less than 1% of any 1-hour period | Plus 15* | |
Noise of impulsive character (hammering, etc.) | Minus 5 | |
Noise of periodic character (hum, screech, etc.) | Minus 5 |
*NOTE: Apply one of these corrections only. |
Floor Area (square feet) | Loading Spaces Required* | |
|---|---|---|
5,000 to 10,000 | 1 | |
10,000 to 20,000 | 2 | |
20,000 to 40,000 | 3 | |
40,000 to 60,000 | 4 | |
Each 50,000 over 60,000 | 1 additional |
*NOTE: In the case of office buildings, not more than two spaces shall be required in any case. |