§ 14-33. Crossdrains and driveway culverts.

(a)

All culverts shall have:

(1)

A minimum open end area of 1.227 square feet;

(2)

May be arch, elliptical, or round in shape; and

(3)

Shall have headwalls made of reinforced concrete. Cover material over culverts shall be suitably stabilized.

(b)

Headwalls shall extend to but not above the top of the ditch into which they are being installed. All sidedrain end sections and headwalls shall be mitered. Mitered end sections shall be constructed such that a six-inch section of pipe extends above the bottom of the ditch. For all pipe less than or equal to 24 inches in diameter the mitered section shall be at a 4:1 slope. Crossdrain mitered end sections may be at a 2:1 slope. For all pipe greater than 24 inches and less than or equal to 48 inches, the mitered section shall be at a 2:1 slope. For all pipe greater than 48 inches in diameter, the mitered section shall be at a 1:1 slope. For all culvert pipes greater than 24 inches in diameter, grate bars shall be installed at 14-inch intervals beginning three inches from the bottom of the mitered section and not greater than one foot from the top of the mitered section. Grate bars shall be constructed of 2½-inch to 3½-inch galvanized pipe for pipes less than or equal to 48 inches in diameter and three- to four-inch galvanized pipe for culverts greater than 48 inches in diameter. All grate bars shall be of uniform size.

(c)

The proposed design of culvert installations shall be submitted to the public works department and approved by the public works director prior to the start of construction. Such design shall conform with the requirements of all applicable ordinances.

(d)

The public works director may grant exceptions to the requirements of subsections (a), (b), and (c) of this section upon a showing of good cause by the applicant.

(Code 1988, § 8-25; Ord. No. 83-1, § 3(13.1))