The size, slope alignment, materials of construction of a POTW sewer, and the methods to be used in excavating, placing of the pipe, jointing, testing and backfilling the trench shall all conform to the requirements set forth in the code of waste disposal regulations, adopted by the Utah state water quality board pursuant to state law, and other specific requirements as set forth by the POTW. WEF "Manual Of Practice No. 9, Design And Construction Of Sanitary And Storm Sewer" (as revised), prepared by a joint committee of the Water Environment Federation and the American Society of Civil Engineers, is adopted as the general guideline for the planning, design and construction of all POTW sewers, unless modified by construction standards adopted by the POTW. All sewer main pipes installed in the public way shall be a minimum of eight inches (8") in diameter and minimum slope on sewer main pipeline shall be as follows, unless otherwise authorized in writing by the director:
Diameter | Slope |
Diameter | Slope |
8 inch | 0.40 percent |
10 inch | 0.30 percent |
12 inch | 0.20 percent |
15 inch | 0.15 percent |
18 inch | 0.10 percent |
21 inch | 0.09 percent |
24 inch | 0.08 percent |
30 inch | 0.06 percent |
(Ord. 36-93 § 4, 1993: prior code § 37-10-1)