Given the data below, design a section of sanitary sewer to carry these flows at a minimum velocity of 2.5 fps. Assume that the minimum depth of the sewer below the street must be 8.5 ft and that an n value of 0.013 is applicable. Make a plan and profile drawing. (Note: The invert into Manhole F must be 937 ft. Assume an invert drop of 0.2 ft across each manhole.)
Manholes | Distance Between Manholes (ft) | Flow (gpm) | Street Elevations at Manholes (ft) |
A to B | 180 | 1200 | A - 978 |
B to C | 300 | 1450 | B - 972 |
C to D | 450 | 2200 | C - 964 |
D to E | 300 | 2500 | D - 958 |
E to F | 400 | 3000 | E – 954 |
|
|
| F – 949 |
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