Steel piping should not be an issue. There may be some concern with plastic piping.
Here is the general requirement from the 2021 IMC. No specific prohibition on plastic piping I could locate, assuming it meets the flame spread requirements. *602.2.1 Materials within plenums. Except as required by Sections 602.2.1.1 through 602.2.1.8, materials within plenums shall be noncombustible or shall be listed andlabeled as having a flame spread index of not more than 25 and a smoke-developed index of not more than 50 when tested in accordance with ASTM E84 or UL 723.* Mike Slaughter Risk Reduction Division Travis County Emergency Services District 2 Office: (512) 989-4531 mslaugh...@pflugervillefire.org On Mon, Feb 5, 2024 at 3:56 PM Brian Harris <bhar...@bvssystemsinc.com> wrote: > Is there anywhere in code that says sprinkler pipe is not allowed in a > space above a ceiling being used as a return air plenum? I know we’ve done > it before but now have a superintendent telling us it’s not allowed on his > job….. Drawings were approved, centerlines clearly called out. Nothing on > the contract drawings saying the space is off limits, etc. > > > > Thank you, > > > > *Brian Harris, CET* > > BVS Systems Inc. > > bvssystemsinc.com > <https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fbvssystemsinc.com%2f&c=E,1,Jogx9LlwOLpPQ2VYAh4Ww4VH4X3tQmQpB4TEtnev2Y4zVz3oeLSe-T1CFZgeK_kPHTn0ids6glFDyDaRQsxoTnzob8VSxMi2yAsucAP8&typo=1> > > Phone: 704.896.9989 > > Fax: 704.896.1935 > > > > _________________________________________________________ > SprinklerForum mailing list: > > https://linkprotect.cudasvc.com/url?a=https%3a%2f%2flists.firesprinkler.org%2flist%2fsprinklerforum.lists.firesprinkler.org&c=E,1,_5ViUrcxAxpHhDVkRI2q1KkK2dbR__m2T3IiIatKP8xihgV9Uj1x_YbhoHB6wpzc8McnVYDcextBFKMLPZmrIOlTx3y4-yRU2bDJbsSu&typo=1 > To unsubscribe send an email to > sprinklerforum-le...@lists.firesprinkler.org >
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