New clearance requirements in ASCE 7 make it much harder to undertake methinks, but I imagine that if you were able to create the required clearances that it could still be done. (FTR, I don't think that the seismic clearances apply if you're in a region that doesn't require seismic engineering.) We used to coordinate a round metal sleeve that would be fabricated and installed by the HVAC contractor, and then we'd just run through that. The MEOR should calculate the additional friction loss imparted by the sleeve in the middle of the flow, to assure that all the boxes are checked regarding airflow volume, noise, etc.
Steve L. From: Tim Stone <[email protected]> Sent: Tuesday, June 25, 2024 10:14 AM To: sprinklerforum <[email protected]> Subject: [Sprinklerforum] Sprinkler Pipe passing through HVAC tin work I have seen this many times where a Sprinkler Pipe passes thru duct work. Primarily on existing older projects, Installed before I started designing 30 plus years ago. Is this practiced allowed? I don't find any reference to it in NFPA 13. This just happened over the weekend when duct work came through a wall and instead of offsetting down to get past an existing sprinkler branch line pipe the duct maintained elevation and was installed around the pipe. Regards, G. Tim Stone G. Tim Stone Consulting, LLC NICET Level III Engineering Technician Fire Protection Sprinkler Design and Consulting Services 117 Old Stage Rd. - Essex Jct., VT. 05452 CELL: (802) 373-0638 [email protected]<mailto:[email protected]>
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