Evaluation Standards
Unit Type | Residents | ||
|---|---|---|---|
Single-family detached: | |||
Two bedrooms | 2.68 | ||
Three bedrooms | 3.31 | ||
Four bedrooms | 3.72 | ||
Five bedrooms | 4.13 | ||
Single-family attached and townhouses: | |||
Two bedrooms | 2.68 | ||
Three bedrooms | 3.35 | ||
Four bedrooms | 3.74 | ||
Garden apartment: | |||
Zero bedrooms | 1.15 | ||
One bedroom | 1.90 | ||
Two bedrooms | 2.81 | ||
Three bedrooms | 3.51 | ||
Unit Type | Elementary Pupils | Secondary Pupils | ||
|---|---|---|---|---|
Single-family detached: | ||||
Two bedrooms | 0.18 | 0.04 | ||
Three bedrooms | 0.54 | 0.09 | ||
Four bedrooms | 1.18 | 0.11 | ||
Five bedrooms | 1.31 | 0.13 | ||
Single-family attached and townhouses: | ||||
Two bedrooms | 0.18 | 0.04 | ||
Three bedrooms | 0.59 | 0.07 | ||
Four bedrooms | 0.90 | 0.13 | ||
Garden apartments: | ||||
Zero bedrooms | 0.00 | 0.00 | ||
One bedroom | 0.03 | 0.01 | ||
Two bedrooms | 0.30 | 0.04 | ||
Three bedrooms | 0.38 | 0.05 | ||
Unit Type | Traffic (PHT) | ||
|---|---|---|---|
Single-family detached: | |||
Two bedrooms | 0.70 | ||
Three bedrooms | 0.80 | ||
Four bedrooms | 0.90 | ||
Five bedrooms | 1.00 | ||
Single-family attached: | |||
Two bedrooms | 0.70 | ||
Three bedrooms | 0.80 | ||
Four bedrooms | 0.90 | ||
Garden apartments: | |||
Zero bedrooms | 0.60 | ||
One bedroom | 0.60 | ||
Two bedrooms | 0.70 | ||
Three bedrooms | 0.80 | ||
Commercial, retail, per 1,000 square feet gross leasable area | 4.35 | ||
Commercial, other, per 1,000 square feet gross leasable area | 1.25 | ||
Industrial, warehousing, per 1,000 square feet gross leasable area | 0.55 | ||
Industrial, light, per 1,000 square feet gross leasable area | 0.50 | ||
Industrial, heavy, per 1,000 square feet gross leasable area | 0.93 | ||
Q=CIA Where | ||
Q = | Quantity of runoff in cubic feet per second. | |
C = | Runoff coefficient (consult Design Data Book for Engineers, Elwyn E. Seelye, John Wiley and Sons, or other reputable source). | |
I = | Rainfall in inches per hour for the design storm frequency, and the time of concentration of the watershed. [Amended 2-19-1980 by Ord. No. 608] | |
A = | The contributing drainage area, in acres, both within and outside the boundary of the property in review. When using the Soil Conservation Service method as required by § 233-55, procedures outlined in TP 149 and RT 55 shall be used in determining peak flows. [Amended 2-19-1980 by Ord. No. 608] | |
A = RKLSCP Where | ||
A = | Amount of soil loss from sheet erosion. | |
R = | Rainfall factor. [Amended 2-19-1980 by Ord. No. 608] | |
K = | Soil erodibility. | |
L = | Slope length. | |
S = | Slope gradient. | |
C = P = | Cover index. Erosion control practice factor. | |
Evaluation Standards
Unit Type | Residents | ||
|---|---|---|---|
Single-family detached: | |||
Two bedrooms | 2.68 | ||
Three bedrooms | 3.31 | ||
Four bedrooms | 3.72 | ||
Five bedrooms | 4.13 | ||
Single-family attached and townhouses: | |||
Two bedrooms | 2.68 | ||
Three bedrooms | 3.35 | ||
Four bedrooms | 3.74 | ||
Garden apartment: | |||
Zero bedrooms | 1.15 | ||
One bedroom | 1.90 | ||
Two bedrooms | 2.81 | ||
Three bedrooms | 3.51 | ||
Unit Type | Elementary Pupils | Secondary Pupils | ||
|---|---|---|---|---|
Single-family detached: | ||||
Two bedrooms | 0.18 | 0.04 | ||
Three bedrooms | 0.54 | 0.09 | ||
Four bedrooms | 1.18 | 0.11 | ||
Five bedrooms | 1.31 | 0.13 | ||
Single-family attached and townhouses: | ||||
Two bedrooms | 0.18 | 0.04 | ||
Three bedrooms | 0.59 | 0.07 | ||
Four bedrooms | 0.90 | 0.13 | ||
Garden apartments: | ||||
Zero bedrooms | 0.00 | 0.00 | ||
One bedroom | 0.03 | 0.01 | ||
Two bedrooms | 0.30 | 0.04 | ||
Three bedrooms | 0.38 | 0.05 | ||
Unit Type | Traffic (PHT) | ||
|---|---|---|---|
Single-family detached: | |||
Two bedrooms | 0.70 | ||
Three bedrooms | 0.80 | ||
Four bedrooms | 0.90 | ||
Five bedrooms | 1.00 | ||
Single-family attached: | |||
Two bedrooms | 0.70 | ||
Three bedrooms | 0.80 | ||
Four bedrooms | 0.90 | ||
Garden apartments: | |||
Zero bedrooms | 0.60 | ||
One bedroom | 0.60 | ||
Two bedrooms | 0.70 | ||
Three bedrooms | 0.80 | ||
Commercial, retail, per 1,000 square feet gross leasable area | 4.35 | ||
Commercial, other, per 1,000 square feet gross leasable area | 1.25 | ||
Industrial, warehousing, per 1,000 square feet gross leasable area | 0.55 | ||
Industrial, light, per 1,000 square feet gross leasable area | 0.50 | ||
Industrial, heavy, per 1,000 square feet gross leasable area | 0.93 | ||
Q=CIA Where | ||
Q = | Quantity of runoff in cubic feet per second. | |
C = | Runoff coefficient (consult Design Data Book for Engineers, Elwyn E. Seelye, John Wiley and Sons, or other reputable source). | |
I = | Rainfall in inches per hour for the design storm frequency, and the time of concentration of the watershed. [Amended 2-19-1980 by Ord. No. 608] | |
A = | The contributing drainage area, in acres, both within and outside the boundary of the property in review. When using the Soil Conservation Service method as required by § 233-55, procedures outlined in TP 149 and RT 55 shall be used in determining peak flows. [Amended 2-19-1980 by Ord. No. 608] | |
A = RKLSCP Where | ||
A = | Amount of soil loss from sheet erosion. | |
R = | Rainfall factor. [Amended 2-19-1980 by Ord. No. 608] | |
K = | Soil erodibility. | |
L = | Slope length. | |
S = | Slope gradient. | |
C = P = | Cover index. Erosion control practice factor. | |