- A. Horizontal Drainage Piping. Horizontal drainage piping shall be installed at a uniform slope but at slopes not less than permitted in §§707.B through 707.D of this code.
- B. Small Piping. Horizontal building drainage piping less than 3-inch diameter shall be installed with a fall of not less than 1/4 inch per foot (21 mm per meter).
- C. Large Piping. Horizontal building drains 3-inch diameter or larger shall be installed with a fall of not less than 1/8 inch per foot (10 mm per meter).
- D. Minimum Velocity. Where conditions do not permit building drains and sewers to be laid with a fall as great as that specified, then a lesser slope may be permitted provided the computed velocity will be not less than 2 fps (0.61 m/s).
Authority Note
AUTHORITY NOTE: Promulgated in accordance with R.S. 40:4(A)(7) and R.S. 40:5(2)(3)(7)(9)(16)(17)(20).
Historical Note
HISTORICAL NOTE: Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 38:2849 (November 2012).