GENERAL

Steps for Manholes: Steps shall be cast iron, polyethylene coated, at least 15mm thick, not less than 400mm in width, and spaced 300mm on center. pipe General: Pipe shall conform to the respective specifications and other requirements as follows: Provide Polyvinyl Vinyl Chloride (PVC) conforming to ASTM D 3034, Type PSM with a maximum SDR of 35 ... ................
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