Design Requirements
Type of Street | Right-of-Way Width (feet) | Pavement Width (feet) |
|---|---|---|
Arterial | 80 | Determined individually |
Collector | 60 | 40 |
Local | 50 | 36 |
Drainage Basin Size (acres) | Storm Frequency Design Capacity |
|---|---|
0 to 25 | 15-year |
26 to 100 | 25-year |
Over 100 | 50-year |
Land Use Type | Runoff Coefficients |
|---|---|
Business: | |
Downtown areas | 0.70 to 0.95 |
Neighborhood areas | 0.50 to 0.70 |
Residential: | |
Single-family areas | 0.30 to 0.50 |
Multiunits, detached | 0.40 to 0.60 |
Multiunits, attached | 0.60 to 0.75 |
Residential (suburban) | 0.25 to 0.40 |
Apartment dwelling areas | 0.50 to 0.70 |
Industrial: | |
Light areas | 0.50 to 0.80 |
Heavy areas | 0.60 to 0.90 |
Parks, cemeteries | 0.16 to 0.25 |
Playgrounds | 0.20 to 0.35 |
Railroad yard areas | 0.20 to 0.35 |
Unimproved areas | 0.10 to 0.30 |
Streets: | |
Surface type: | |
Asphaltic | 0.70 to 0.95 |
Concrete | 0.80 to 0.95 |
Brick | 0.70 to 0.85 |
Drives and walks | 0.75 to 0.85 |
Roofs: | 0.75 to 0.95 |
Flat: 2% | 0.05 to 0.10 |
Average: 2% to 7% | 0.10 to 0.15 |
Steep: 7% | 0.15 to 0.20 |
Lawns: heavy soil: | |
Flat: 2% | 0.13 to 0.17 |
Average: 2% to 7% | 0.18 to 0.22 |
Steep: 7% | 0.25 to 0.35 |
Angle of Parking Space (Degrees) | 1-Way Aisle (feet) | 2-Way Aisle (feet) |
|---|---|---|
90 | Prohibited | 24 |
60 | 18 | 20 |
45 | 15 | 20 |
30 | 12 | 18 |
Parallel | 12 | 18 |
Schedule of Minimum Distances for Location of Parking and Loading Areas | ||||
|---|---|---|---|---|
Zone | From Buildings (feet)2 | From Streets (feet)4 | From Property Lines (feet) | From Residential Zones (feet)5 |
Residential districts1 | 10 | 10 | 10 | 10 |
CC | 10 | 10 | 10 | 25 |
C/I | 10 | 10 | 10 | 25 |
Open Space districts | 10 | 25 | 10 | 25 |
Mixed-Use districts | 5(3) | 10 | 10 | 10 |
NOTES: | |
|---|---|
(1) | All uses except one-family dwellings. |
(2) | Loading areas and parking spaces adjoining garage doors excepted. |
(3) | Ten feet from front of building. |
(4) | Parking prohibited in front yard except for parking in residential driveway or in the C/I District, provided that no parking shall be situated within 100 feet of any residential zone district. |
(5) | But not less than 10% of the average lot depth from a rear property line. |
A | Total number of parking spaces required to satisfy nonresidential uses at point of peak demand. |
B | Total number of parking spaces required to satisfy residential uses at point of peak demand. |
C | Total number of parking spaces required to satisfy peak demand (residential and nonresidential combined) (A+B). |
D | Less on-site parking supply (existing to remain and proposed). |
E | Net peak demand on municipal parking (C-D). |
A | Total number of parking spaces required to satisfy nonresidential uses at point of peak demand. |
D | Less on-site parking supply (existing to remain and proposed). |
E | Net nonresidential demand on municipal parking at peak (A - D). |
C | Total peak demand on municipal parking (A + B). |
F | Net nonresidential demand on municipal parking at peak (A - D). |
G | Net additional demand on municipal parking at peak (C - F). |
Design Requirements
Type of Street | Right-of-Way Width (feet) | Pavement Width (feet) |
|---|---|---|
Arterial | 80 | Determined individually |
Collector | 60 | 40 |
Local | 50 | 36 |
Drainage Basin Size (acres) | Storm Frequency Design Capacity |
|---|---|
0 to 25 | 15-year |
26 to 100 | 25-year |
Over 100 | 50-year |
Land Use Type | Runoff Coefficients |
|---|---|
Business: | |
Downtown areas | 0.70 to 0.95 |
Neighborhood areas | 0.50 to 0.70 |
Residential: | |
Single-family areas | 0.30 to 0.50 |
Multiunits, detached | 0.40 to 0.60 |
Multiunits, attached | 0.60 to 0.75 |
Residential (suburban) | 0.25 to 0.40 |
Apartment dwelling areas | 0.50 to 0.70 |
Industrial: | |
Light areas | 0.50 to 0.80 |
Heavy areas | 0.60 to 0.90 |
Parks, cemeteries | 0.16 to 0.25 |
Playgrounds | 0.20 to 0.35 |
Railroad yard areas | 0.20 to 0.35 |
Unimproved areas | 0.10 to 0.30 |
Streets: | |
Surface type: | |
Asphaltic | 0.70 to 0.95 |
Concrete | 0.80 to 0.95 |
Brick | 0.70 to 0.85 |
Drives and walks | 0.75 to 0.85 |
Roofs: | 0.75 to 0.95 |
Flat: 2% | 0.05 to 0.10 |
Average: 2% to 7% | 0.10 to 0.15 |
Steep: 7% | 0.15 to 0.20 |
Lawns: heavy soil: | |
Flat: 2% | 0.13 to 0.17 |
Average: 2% to 7% | 0.18 to 0.22 |
Steep: 7% | 0.25 to 0.35 |
Angle of Parking Space (Degrees) | 1-Way Aisle (feet) | 2-Way Aisle (feet) |
|---|---|---|
90 | Prohibited | 24 |
60 | 18 | 20 |
45 | 15 | 20 |
30 | 12 | 18 |
Parallel | 12 | 18 |
Schedule of Minimum Distances for Location of Parking and Loading Areas | ||||
|---|---|---|---|---|
Zone | From Buildings (feet)2 | From Streets (feet)4 | From Property Lines (feet) | From Residential Zones (feet)5 |
Residential districts1 | 10 | 10 | 10 | 10 |
CC | 10 | 10 | 10 | 25 |
C/I | 10 | 10 | 10 | 25 |
Open Space districts | 10 | 25 | 10 | 25 |
Mixed-Use districts | 5(3) | 10 | 10 | 10 |
NOTES: | |
|---|---|
(1) | All uses except one-family dwellings. |
(2) | Loading areas and parking spaces adjoining garage doors excepted. |
(3) | Ten feet from front of building. |
(4) | Parking prohibited in front yard except for parking in residential driveway or in the C/I District, provided that no parking shall be situated within 100 feet of any residential zone district. |
(5) | But not less than 10% of the average lot depth from a rear property line. |
A | Total number of parking spaces required to satisfy nonresidential uses at point of peak demand. |
B | Total number of parking spaces required to satisfy residential uses at point of peak demand. |
C | Total number of parking spaces required to satisfy peak demand (residential and nonresidential combined) (A+B). |
D | Less on-site parking supply (existing to remain and proposed). |
E | Net peak demand on municipal parking (C-D). |
A | Total number of parking spaces required to satisfy nonresidential uses at point of peak demand. |
D | Less on-site parking supply (existing to remain and proposed). |
E | Net nonresidential demand on municipal parking at peak (A - D). |
C | Total peak demand on municipal parking (A + B). |
F | Net nonresidential demand on municipal parking at peak (A - D). |
G | Net additional demand on municipal parking at peak (C - F). |