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Old 10-11-2010, 05:05 PM   #1
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Supporting vertical PVC runs


Does no one worry about supporting PVC pipe on vertical runs? I have found virtually no mention of it between the book I bought, Google, and this forum. I remember reading somewhere that vertical pipe runs should be supported on each story (floor). Didn't find any products of use at both big box stores. I could use a riser clamp. The type that are used with steel/iron pipe but that seems like overkill. How is this handled in new construction?

FWIW the line I am constructing is a 1.5" dia drain/vent. It will run from the basement rafters up through one story, where a sanitary tee is, to the attic where it goes 45 degrees for a little bit and then finally out the roof.

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Old 10-11-2010, 05:21 PM   #2
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Supporting vertical PVC runs


I generally set a coupling on top of the hole in the bottom plate. Since the hole is larger than the pipe, but smaller than the coupling, it won't fall through and will easily support 10' of DWV pipe. Same theory as a riser clamp. When doing a crawl space for instance, glue a short peice of pipe into a coupling, drop it in the pipe hole. Now go in the crawl, find the veticle pipe and finish the run. Hopes this helps

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Old 10-11-2010, 06:54 PM   #3
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Supporting vertical PVC runs


Two words. Riser Clamp they are required for every stack interval.
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