A table of C values recommended by the American Society of Civil Engineers and Water Pollution Control Federation.
|
|
|
| Business |
|
| Downtown |
0.70-0.95
|
| Neighborhood |
0.50-0.70
|
| Residential |
|
| Single-Family |
0.30-0.50
|
| Multiunits, detached |
0.40-0.60
|
| Multiunits, attached |
0.60-0.75
|
| Residential (suburban) |
0.25-0.40
|
| Apartment |
0.50-0.70
|
| Industrial |
|
| Light |
0.50-0.80
|
| Heavy |
0.60-0.90
|
| Parks, cemeteries |
0.10-0.25
|
| Playgrounds |
0.20-0.35
|
| Railroad yard |
0.20-0.35
|
| Unimproved |
0.10-0.30
|
|
|
|
| Pavement |
|
| Asphaltic and concrete |
0.70-0.95
|
| Brick |
0.70-0.85
|
| Roofs |
0.75-0.95
|
| Lawns, sandy soil |
|
| Flat, 2 percent |
0.05-0.10
|
| Average, 2-7 percent |
0.10-0.15
|
| Steep, 7 percent |
0.15-0.20
|
| Lawns, heavy soil |
|
| Flat, 2 percent |
0.13-0.17
|
| Average, 2-7 percent |
0.18-0.22
|
| Steep, 7 percent |
0.25-0.35
|
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