Dapr, The Installation Guidelines of the CPVC will give you the criteria for installing CPVC exposed rather than 13R.
Greg McGahan Genesis Fire Services, LLC. ________________________________ From: Dapr Jones <[email protected]> Sent: Friday, April 26, 2024 10:57 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] NFPA 13R residential system - Exposed CPVC A multi-family fit up project will have existing to remain upper floor and new first floor apt. units. Currently the building is not sprinkled and will have a new sprinkler system. The contractor wants to run the new sprinkler pipe exposed using CPVC in the existing upper level units. NFPA 13R doesn't seem to prohibit this as Table 5.2.1 does include CPVC (ASTM F442/F442M). I'd like to get your thoughts on this and see if you've come across it. Thanks
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