7.4.10.9.Hydraulic Loads on Horizontal Storm Drains

(1) The hydraulic load that is drained to a storm building drain, a storm building sewer or a combined building sewer shall conform to Table 7.4.10.9. Table 7.4.10.9. Maximum Permitted Hydraulic Load Drained to a Storm Building Drain or Sewer, or a Combined Building Sewer Forming Part of Sentence 7.4.9.5.(2) and Article 7.4.10.9. Maximum Hydraulic Load, L Nominal Pipe Size of Drain Slope(1) or Sewer, NPS 1 in 400 1 in 200 1 in 133 1 in 100 1 in 68 1 in 50 1 in 25 3 n/a n/a n/a n/a n/a 2 770 3 910 4 n/a n/a n/a 4 220 5 160 5 970 8 430 5 n/a n/a 6 760 7 650 9 350 10 800 15 300 6 n/a n/a 10 700 12 400 15 200 17 600 24 900 8 n/a 18 900 23 200 26 700 32 800 37 800 53 600 10 n/a 34 300 41 900 48 500 59 400 68 600 97 000 12 37 400 55 900 68 300 78 700 96 500 112 000 158 000 15 71 400 101 000 124 000 143 000 175 000 202 000 287 000 Notes to Table 7.4.10.9.: (1) Slope is the ratio of rise to run, in whatever measurement units are chosen.