Unless otherwise specifically approved by the Building Commissioner, roof drainage shall be handled by suitable collectors and downspouts, which shall discharge into a sealed, jointed storm drain of not less than four-inch diameter with a slope of one-fourth inch or more per foot. Where a storm sewer or other storm drainage outlet is not available or where a disconnection permit application is submitted and granted, downspouts may discharge onto other devices approved by the Building Commissioner provided that no excess water shall flow onto adjoining property or over sidewalks. A disconnection permit shall be revoked upon evidence that excess water flows onto adjoining property or over sidewalks. The storm drain outlet carrying roof water or yard drainage shall be not less than six-inch diameter and shall not connect to the footing drain, but may intercept and receive the outlet of the footing drainage by a wye connection above the spring line. Connection of any pipe carrying roof water or yard drainage to a sanitary sewer is prohibited.
(Ord. 2014-33. Passed 7-14-14.)