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joining standpipe to main pipe in accordance with NFPA 14

Question asked by alirezazamnai on Dec 19, 2017
Latest reply on Dec 24, 2017 by alirezazamnai

Does joining a 2 1/2" standpipe to the 6" main pipe through drilling the main pipe and welding the standpipe to it in the T form- instead of using any fittings- comply with NFPA 14?

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