Water distribution piping under concrete slabs

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  7. Water distribution piping under concrete slabs

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  1. (a) Inaccessible water distribution piping under concrete slabs may be cross-linked polyethylene PEX (SDR9) pipe.

  2. (b) Cross-linked polyethylene PEX (SDR9) pipe shall meet ASTM F-876/F-877 and NSP standards 14 and 61.


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