(a) Sizing.
(1) Culverts shall be of sufficient size to carry the design flow of the available grade.
(2) Culverts shall be a minimum of twelve inches in diameter and a minimum of eighteen feet long.
(b) Grade. Culverts shall be laid on ditch grade.
(c) Materials. Sixteen gauge corrugated, hot-dipped galvanized, copper-bearing steel pipe, or C 75 reinforced concrete pipe, shall be used.
(d) Joints.
(1) Sections of galvanized pipe shall be connected with bolted No. 16 gauge galvanized standard connecting bands not less than one and one-half inches wide.
(2) Joints in concrete pipe shall be sealed according to Michigan Department of Transportation Standard Specifications.
(e) Laying.
(1) Six inches of sand bed must be placed beneath the culvert to ensure uniformity of the bed.
(2) The culverts shall have not less than a six-inch cover of 22A gravel, slag or crushed stone.
(3) Riprap shall be placed in the ditch at each end of the culvert if required by the Village Engineer. Six-inch minimum stone size shall be used and riprap shall conform to the flow line of the ditch.
(f) End Protection.
(1) All culverts shall be fitted with concrete rings per Michigan Department of Transportation Standard Specifications.
(2) Headwalls may be substituted for rings, provided they conform to the Michigan Department of Transportation Standard Specifications for such headwalls
(3) In lieu of the rings and headwalls provided in paragraphs (f)(1) and (2) hereof, the exposed ends of a culvert may be protected with cement- bonded riprap (six-inch minimum stone size) or brick, provided that the riprap or brick extends not less than four inches thick at the invert, not less than eight inches thick from the invert to and over the top of the culvert, and not less than twelve inches along the length of said ends.
(4) Other forms of culvert end protection may be accepted if approved in writing by the Road Administrator.
(g) Maintenance. Culverts shall be maintained in satisfactory condition by the property owner at all times. (Ord. 8. Passed 11-21-60; Ord. 2011-01. Passed 2-14-11.)