18-29-1101.6 Fittings and connections.

   All connections and changes in direction of the storm drainage system shall be made with approved drainage-type fittings in accordance with Table 18-29-706.3. The fittings shall not obstruct or retard flow in the system.

18-29-1101.7 Roof design.

   Roofs shall be designed for the maximum possible depth of water that will pond thereon as determined by the relative levels of roof deck and overflow weirs, scuppers, edges or serviceable drains in combination with the deflected structural elements. In determining the maximum possible depth of water, all primary roof drainage means shall be assumed to be blocked.

(Amend Coun. J. 10-14-21, p. 37722, Art. XI, § 2)

18-29-1101.8 Cleanouts required.

   Cleanouts shall be installed in the storm drainage system and shall comply with the provisions of this chapter for sanitary drainage pipe cleanouts or as required by the department of water management design standards.

(Amend Coun. J. 3-27-02, p. 82090, § 3; Amend Coun. J. 11-8-12, p. 38872, § 377)

18-29-1101.9 Backwater valves.

   Backwater valves installed in a storm drainage system shall conform to Section 18-29-715.

18-29-1102 Materials.

18-29-1102.1 General.

   The materials and methods utilized for the construction and installation of storm drainage systems shall comply with this section and the applicable provisions of Article 18-29-7.

18-29-1102.2 Inside storm drainage conductors.

   Inside storm drainage conductors installed above ground shall conform to one of the standards listed in Table 18-29-702.1.

18-29-1102.3 Underground building storm drain pipe.

   Underground building storm drain pipe shall conform to one of the standards listed in Table 18-29-702.2, except that neither polyvinyl chloride (PVC) nor polypropylene (PPL) pipe and fittings shall be allowed in stormwater detention applications as oversized pipe.