Use and Care Guide

22
Cast Iron Installation
1
⁄4 FULL
1
⁄2 FULL
3
⁄4 FULL FULL
TABLE 1
Slopes of Cast Iron Soil Pipe Sanitary Sewers
Required to Obtain Self-Cleaning Velocities of 2.0 and 2.5 Ft./Sec.
(Based on Manning’s Formula with N =.012)
2.0 2.0 0.0313 4.67 0.0186 9.34 0.0148 14.09 0.0186 18.76
2.5 0.0489 5.84 0.0291 11.67 0.0231 17.62 0.0291 23.45
3.0 2.0 0.0178 10.77 0.0107 21.46 0.0085 32.23 0.0107 42.91
2.5 0.0278 13.47 0.0167 26.82 0.0133 40.29 0.0167 53.64
4.0 2.0 0.0122 19.03 0.0073 38.06 0.0058 57.01 0.0073 76.04
2.5 0.0191 23.79 0.0114 47.58 0.0091 71.26 0.0114 95.05
5.0 2.0 0.0090 29.89 0.0054 59.79 0.0043 89.59 0.0054 119.49
2.5 0.0141 37.37 0.0085 74.74 0.0067 11.99 0.0085 149.36
6.0 2.0 0.0071 43.18 0.0042 86.36 0.0034 129.54 0.0042 172.72
2.5 0.0111 53.98 0.0066 107.95 0.0053 161.93 0.0066 214.90
8.0 2.0 0.0048 77.20 0.0029 154.32 0.0023 231.52 0.0029 308.64
2.5 0.0075 96.50 0.0045 192.90 0.0036 289.40 0.0045 385.79
10.0 2.0 0.0036 120.92 0.0021 241.85 0.0017 362.77 0.0021 483.69
2.5 0.0056 151.15 0.0033 302.31 0.0026 453.46 0.0033 604.61
12.0 2.0 0.0028 174.52 0.0017 349.03 0.0013 523.55 0.0017 698.07
2.5 0.0044 218.15 0.0026 436.29 0.0021 654.44 0.0026 872.58
15.0 2.0 0.0021 275.42 0.0012 550.84 0.0010 826.26 0.0012 1101.68
2.5 0.0032 344.28 0.0019 688.55 0.0015 1032.83 0.0019 1377.10
Flow velocity required to obtain a self-cleaning drain, waste, and vent plumbing system is 2.0 to 2.5 feet per second.
Pipe
Size Velocity Slope Flow Slope Flow Slope Flow Slope Flow
(In.) (Ft./Sec.) (Ft./Ft.) (Gal./Min.) (Ft./Ft.) (Gal./Min.) (Ft./Ft.) (Gal./Min.) (Ft./Ft.) (Gal./Min.)
DESIGN AND ENGINEERING DATA
FLUID FLOW PROPERTIES