§ 122-91. Concrete work.

The following are standard specifications for concrete sidewalks, driveway approaches, curbs and gutters. the director of engineering is hereby authorized to adopt standards specifications and standard details consistent with this section. The official copy of the standards specifications and standard details shall be on file with the director of engineering. Concrete work shall not be deemed complete until inspected and accepted by the director of engineering.

(1)

Basic requirement. The concrete sidewalks, driveways, curbs and gutters shall be composed of standard Portland cement or an approved high, early strength cement, fine aggregate, coarse aggregate and water, mixed and proportioned according to the workability factor method of design, and in accordance with definite specification requirements outlined in this section and as adopted by the director of engineering. The concrete shall comply with the standard specifications and standard details for concrete work on concrete mix and minimum concrete properties as promulgated by the director of engineering. The concrete, when tested on test specimens cured under field laboratory conditions, shall equal or be greater than the following:

a.

Compressive strength: pounds per square inch, 28 days—3,500 pounds; and

b.

Flexural strength: pounds per square inch, seven days—650 pounds.

(2)

Foundation. The foundation shall consist of firm, hard soil from which all vegetable matter and other loose material have been removed. Sidewalks shall be constructed on a sand cushion.

(3)

Combined curb and gutter. Curb and gutter shall be designed and constructed in accordance with the standard specifications and standard details adopted by the director of engineering, which standards and details, include details concerning location, thickness, height, and reinforcement of permissible curb and gutter. Mountable curbs shall be prohibited.

(4)

Sidewalks.

a.

Width. Sidewalks shall be not less than five feet wide, unless otherwise approved by the director of engineering in accordance with this subsection. The director of engineering may approve a reduction in sidewalk width of not less than four feet if (i) the sidewalk is on the same street and within the same block as an existing sidewalk, (ii) more than 80 percent of the required sidewalk exists at the time a permit is requested and (iii) the existing sidewalk has a width of less than five feet.

b.

Construction. Sidewalks shall not be less than four inches thick composed of reinforced concrete. Sidewalks shall be constructed in accordance with the standard specifications and standard details, which include a reinforcing schedule.

c.

Location. Sidewalks will be located as described in the definition of "sidewalk," as defined in section 18-93(a) of this Code.

d.

Curb ramps. Wheelchair ramps will be provided as required by the state and federal law, including the regulations of the state department of licensing and regulation and the Americans with Disabilities Act.

(6)

Driveway approaches. Driveway approaches shall (i) be composed of reinforced concrete of not less than five inches thick, (ii) meet or exceed FHA minimum standards, and (iii) comply with the standard specifications and standard details adopted by the director of engineering.

(Ord. No. 28, § 5, 11-16-48; Code 1967, § 26-30; Ord. No. 2310, § 1, 9-8-77; Ord. No. 9053, § 1, 12-14-00; Ord. No. 11,980, § 2, 7-26-12; Ord. No. 13,352 , § 2, 11-10-16)

Editor's note

Ord. No. 13,352 , § 2, adopted Nov. 10, 2016, changed the title of § 122-91 from "Cement or concrete work" to read as herein set out.