10.26.2021-SBN-Standards-Manufacturer-Additions-Minor-Revisions-final

Home Browse Search

SECTION 4 – SANITARY 42 3.) Fittings: Ductile iron fittings are preferred. HDPE fittings, as required, shall conform to the same manufacture and material requirements as listed for the HDPE pipe. The electrofusion fittings and couplings shall meet the requirements of ASTM D3350-02 and ASTM F1055 and be of the same resin type as the pipe. 4.) HDPE Mechanical Joint Adaptors with Kits: HDPE Mechanical Joint Adaptors with Kits shall be used to connect the HDPE pipe to D.I. fittings. Instead of mechanical joint adapters, the combination of a mechanical joint restrainer and pipe stiffener may be used. Stainless steel pipe stiffeners shall be used for insertion into the HDPE pipe for support at each mechanical joint. The stiffeners shall be constructed of 304 stainless steel and be twelve (12) inches wide with a diameter sized appropriately for the respective pipe. 4-2.2 (d) DUCTILE IRON PIPE AND FITTINGS Eighteen (18) foot lengths of ductile iron pipe shall conform to the requirements of the American National Standards Institute (ANSI) 21.51, or American Water Works Association (AWWA) C151, Thickness Class 50 push-on joint pipe. The ductile iron pipe and fittings shall have a hot coal tar coating in accordance with American Standards Institute for Coal-Tar Dip Coating for Cast Iron Pipe and Fittings. Rubber gasket joints shall conform to the requirements of ANSI A21.11 or AWWA C111. Ductile Iron Pipe that is exposed or located in structures shall have flanged joints per AWWA C115. Ductile iron fittings shall conform to AWWA C111/ANSI A21.11 and AWWA C110/ANSI A21.10 for full body fittings or AWWA C153/ANSI A21.53-94 for compact fittings. All fittings shall be mechanical joint. All fittings shall be manufactured in the United States. Ductile Iron fittings that are exposed or located in structures shall have flanged joints per AWWA C115. Ductile iron pipe and fittings used in the sanitary sewer system shall be lined with forty (40) mil of a ceramic epoxy liner “Protecto 401” or equal. 4-2.2 (e) POLYETHYLENE ENCASEMENT OF DUCTILE IRON PIPE AND FITTINGS The ductile iron pressure sewer pipe, valves, and associated fittings shall be encased (wrapped) in polyethylene in accordance with AWWA C105/ANSI A21.5. The polyethylene wrap shall be V- Bio enhanced. It shall consist of three layers of co-extruded linear low-density polyethylene (LLDPE), fused into a single thickness of not less than eight (8) mils. The inside surface of the polyethylene wrap, to be in contact with the pipe exterior, shall be infused with a blend of anti- microbial biocide to mitigate microbiologically influenced corrosion and a volatile corrosion inhibitor to control galvanic corrosion. The wrap shall be overlapped one (1) foot in each direction at joints and secured in place around the pipe. Wrap at tap locations shall be taped tightly prior to tapping. Contractor shall make all necessary repairs to the wrap following tapping operations.