Chris- Thank you. We had thought about that but I was just unclear on how the roof drains would be part of the potable water.
Brian Harris, CET BVS Systems Inc. bvssytemsinc.com<http://bvssystemsinc.com/> From: Chris Dorn <chris.d...@dornfireprotection.com> Sent: Wednesday, August 23, 2023 9:17 AM To: Discussion list on issues relating to automatic fire sprinklers <sprinklerforum@lists.firesprinkler.org> Subject: [Sprinklerforum] Re: Roof Drain / Sprinkler Drain Brian, This would be a cross connection of the potable water system with wastewater. At minimum you would need a 1" air gap. Chris Dorn From: Brian Harris <bhar...@bvssystemsinc.com<mailto:bhar...@bvssystemsinc.com>> Sent: Wednesday, August 23, 2023 8:53 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: [Sprinklerforum] Roof Drain / Sprinkler Drain We have a project with standpipes and a basement. All floors above the basement drain through the Standpipe drain and empty at grade. We usually then drain the remaining (basement) section of standpipe through the bottom hose valve. The GC is asking if we can instead drain that last section by tying into the roof drain in the same stairwell that runs outside below grade. Is this a no-no? Brian Harris, CET BVS Systems Inc. bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935
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