(A) The minimum culvert size for all city roads and roads within the city, other than state maintained roads, shall be 15 inches inside diameter and shall be a minimum length equal to the width of the driveway pavement plus 4 times the depth of the drainage ditch as measured from the top of the driveway to the invert of the ditch. State maintained roads shall meet the minimum requirements of the State Highway departments for encroachment permits. All culverts shall be reinforced concrete pipe, 14 gauge galvanized corrugated metal pipe with asphalt or epoxy coating, or smooth bore N12- HDPE pipe or equivalent. The pipes may be round, oval or arch pipes and must be installed to the manufacturer’s specifications and meet the requirements for installation determined by the Engineer for the city. No material other that those mentioned shall be acceptable. The area below the pipe shall be compacted to 95% proctor using mechanical methods. The culvert shall be bedded in #57 stone compacted to 95% proctor and completely supported by said stone for the entire length of the pipe. There can be no greater than 1 inch deflection in the horizontal run of the culvert pipe. Minimum cover for all culverts shall be sufficient to withstand a H20 highway load per manufacturer’s specifications.
(B) There can be no greater than 1 inch deflection in the horizontal run of the culvert. The culvert shall have a minimum coverage of 4 inches above and surrounding it; consisting of 0-3/8 limestone, dense grade limestone, or 57 limestone and compacted to 85% to 90% consistency.
(C) All proposed entrances onto city roads shall be evaluated by the City Engineer to determine if a culvert pipe is necessary. If a culvert pipe is necessary, the owner shall have prepared an encroachment drawing, prepared and signed by an engineer licensed to practice in the state of Kentucky. The plan shall be submitted to the City Engineer for review and recommendation of approval or denial by the city.
(Prior Code KOC, § 620.13, passed 7-2-2001; Prior Code KOC, § 620.14, passed 4-7-2003)