16.10.200 Workmanship and materials.
A. Workmanship. The specifications for the construction of storm sewers shall not be less stringent than those set forth in the latest edition of the Indiana Department of Highways’ “Standard Specifications”; additionally, ductile iron pipe shall be laid in accordance with American Society of Testing Materials (ASTM) C-12.8.
B. Materials.
1. Storm sewer manholes and inlets shall be constructed of masonry, cast in place concrete or precast reinforced concrete or other material approved by the Board and County Surveyor. Material and construction shall conform to the current Indiana Department of Highways’ “Standard Specifications.”
2. Pipe and fittings used in storm sewer construction shall be (a) PVC meeting the requirements of ASTM D-3034 SDR 35 with joints meeting the requirements of ASTM D-3212; (b) high density polyethylene (HDPE) meeting the requirements of AASHTO M-294 and ASTM D-1248 with joints meeting the requirements of ASTM D-3212, or concrete pipe (ASTM C-76). Other pipe and fittings not specified herein may be used only when specifically authorized by the Board. Pipe joints shall be flexible and watertight and shall conform to the requirements of the materials of the latest edition of the Indiana Department of Highways’ “Standard Specifications.”
C. Special Hydraulic Structures. Special hydraulic structures required to control the flow of water in storm runoff drainage systems include junction chambers, drop manholes, inverted siphons, stilling basins, and other special structures. The use of these structures shall be limited to those locations justified by prudent planning and by careful and thorough hydraulic engineering analysis. [Ord. 12-1-97C § 12.]