(A) Cast iron pipe of sufficient strength to withstand the weight of vehicular traffic, or equivalent piping (PVC or plastic corrugated pipe not acceptable), shall be used in connecting to the storm sewer system. The pipe shall be at least three (3) inches and no greater than six (6) inches in diameter, and have a positive flow of not less than a minimum grade of one-eighth (1/8) inch per foot towards the street or gutter. The pipe shall be placed at the top of the curb, and the top of the curb may be cut or notched so that the bottom of the pipe is a minimum of two (2) inches above the gutter line. The pipe shall be anchored with a sufficient amount of concrete to prevent movement by vehicular traffic or settling.
(B) If a sidewalk is located in the right-of-way, the pipe shall not compromise the thickness of the sidewalk (minimum of four (4) inches). If the sidewalk abuts directly against the back of the curb, a drain shall not be installed to the street.
