§ 18-29-1108.1 — Size of combined drains and sewers

18-29-1108.1 Size of combined drains and sewers.

Whenever a combined sewer system is employed, the required size of the combined house sewer shall be determined by adding the total drained area in square feet in Table 18-29-1106.2 and equivalent area for the number of fixture units in accordance with Table 18-29-1108.1. Table 18-29-1108.1 Combined Sanitary and Storm System No. of Fixture Units | Equivalent Area (sq. ft.) | No. of Fixture Units | Equivalent Area (sq. ft.)* No. of Fixture Units | Equivalent Area (sq. ft.) | No. of Fixture Units | Equivalent Area (sq. ft.)* 1 | 165 | 31 | 2,820 2 | 325 | 32 | 2,870 3 | 475 | 34 | 2,955 5 | 750 | 38 | 3,125 6 | 875 | 40 | 3,200 7 | 1,000 | 42 | 3,270 8 | 1,115 | 44 | 3,340 9 | 1,225 | 46 | 3,400 10 | 1,330 | 48 | 3,465 11 | 1,435 | 50 | 3,350 12 | 1,530 | 55 | 3,530 13 | 1,620 | 60 | 3,790 14 | 1,710 | 65 | 3,900 15 | 1,800 | 70 | 4,000 16 | 1,880 | 75 | 4,090 17 | 1,960 | 80 | 4,175 18 | 2,040 | 85 | 4,250 19 | 2,110 | 90 | 4,320 20 | 2,180 | 95 | 4,390 21 | 2,250 | 100 | 4,450 22 | 2,310 | 105 | 4,500 23 | 2,360 | 110 | 4,550 24 | 2,440 | 115 | 4,600 25 | 2,500 | 120 | 4,645 26 | 2,550 | 125 | 4,690 27 | 2,600 | 130 | 4,725 28 | 2,660 | 140 | 4,800 29 | 2,710 | 145 | 4,830 30 | 2,770 | 150 | 4,850 * For more than 150 fixture units, the equivalent area shall be determined by adding 7.2 square feet for each fixture unit over 150 to 4,850 square feet.