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Resolution No 36-2021 - Adopting Revised Construction Standards and Specifications
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Resolution No 36-2021 - Adopting Revised Construction Standards and Specifications
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10/27/2021 9:20:49 AM
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Board of Public Works
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Resolutions
Document Date
10/26/2021
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SECTION 4 – SANITARY <br />43 <br />4-2.2 (f) JOINT RESTRAINT <br />Retainer Glands shall be wedge action with set screws. The length of restraint shall be determined <br />by the Design Engineer. <br />Concrete Thrust Blocks: Concrete thrust blocks shall only be used if designed and certified by a <br />Professional Engineer registered in the State of Indiana. <br />4-2.3 VALVES <br />4-2.3 (a) KNIFE GATE VALVE <br />Knife gates shall have a cast iron body conforming to ANSI Class 150 with 304 or 316 stainless <br />steel wetted parts. The valve shall be of full port design. The resilient seat shall be EPDM suitable <br />for use with wastewater. The actuator type shall be based on the valve’s application. <br />4-2.3 (b) PLUG VALVE <br />Plug valves shall conform to AWWA C517 with full port opening. Valve bodies shall be cast iron <br />conforming to ASTM A-126 Grade B. The plug shall be cast iron with a resilient coating. Joints <br />shall be flanged (non-buried service) or mechanical joint (buried service). The valve shall have a <br />two (2) inch nut operator and valve box for buried service and a hand wheel operator for non-buried <br />service. <br />4-2.3 (c) CHECK VALVE <br />Check valve shall comply with AWWA C508. Valve body and cover shall comply with ASTM A- <br />536 Grade 65-45-12 ductile iron. The disc shall be precision molded Buna N. The swing check <br />valve shall have an outside lever and weight. Joints shall be flanged. Check valve shall be of the <br />non-slam type. The check valve shall provide full flow pipe equivalent area when fully open. <br />4-2.3 (d) AIR RELEASE VALVE <br />Air release valves or other air release devices shall be installed at every intermediate apex point <br />where air may accumulate in the force main. Air release valves shall be by “APCO”, “Val-Matic”, <br />or equal. Air release valves shall be installed inside a structure, refer to Standard Drawing 4-15. <br />4-2.3 (e) VALVE BOX <br />Valve boxes shall be cast iron. Valve box assemblies shall include bottom section, top section, and <br />lid. Lid shall have the word “SEWER” cast into it. Valve boxes shall have a five (5) foot burial <br />depth. <br />4-2.4 STRUCTURES <br />4-2.4 (a) PRE-CAST <br />Manholes shall conform to ASTM C-478 for round structures and ASTM C-913 <br />for rectangular/square structures. See also Section 3-3.3 for additional information.
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