(a) Storm water shall be collected and drained from roofs, paved areas, yards, courts, shafts, open excavations and that part of a lot or premises where water accumulates, except as provided under subsection (b) hereof.
(b) The provisions of this section shall not be interpreted to prohibit construction or maintenance of a pool or fountain provided with approved drainage and in which the water is not permitted to become stagnant, contaminated or polluted.
(c) Storm drains shall be run separately to public storm sewers, creeks or approved ditches or gullies. Storm drains shall not be connected into a sanitary sewer.
(1) Connections to a public sewer shall be made in accordance with the sewer authority having jurisdiction.
(2) Terminations at creeks, ditches, gullies or swales shall be made with a concrete headwall to protect the pipe from damage or erosion.
(d) Storm drains, conductors and leaders, including prohibitions, shall be in accordance with the provisions of the Ohio Basic Building Code (Plumbing), Sections 4101:51-69, 70 and 71, along with the appropriate sizing Tables 4101:2-51-77 (A) and (B) (refer to Appendix A).
(1) The size of a drain line from a small roof or area to be drained may be reduced from the smallest size listed in the Ohio Basic Building Code (Plumbing), Section 4101:2-51-71 (refer to Appendix A), in accordance with the following limitations.
Pipe Diameter | Roof Area (sq. ft.) For 1/4 in. Slope | For 1/2 in. Slope | Area for Vertical Leader (sq. ft.) |
2 | 350 | 500 | 720 |
2-1/2 | 550 | 780 | 1300 |
(2) A rain conductor or leader shall not receive any soil or waste connections or serve as a sanitary vent.
(3) Where there is a continuous or semicontinuous discharge into a storm drain or sewer from a pump, ejector, air conditioning unit or similar device, the flow shall be added to the drainage area total on the basis of twenty-four square feet of area for each gallon per minute.
(e) The type of pipe that may be used for leaders and storm drainage shall be in accordance with Section 1381.03 of this Building Code.
(Ord. 1992-101. Passed 1-14-92.)