Ron beat me to it – this is NOT your problem. I’m assuming it’s an existing structure or a lightweight metal frame if new? From a responsible charge perspective, I think you have to perform your due diligence and consider every reasonable option regarding type and spacing of hangers, then put that out there for the structural engineer of record to process. The obvious way to attach a greater load to a structure with such limited point load capacity is to attach at multiple points.
What type of framing is this? Steve Leyton From: Sprinklerforum [mailto:[email protected]] On Behalf Of Ron Greenman via Sprinklerforum Sent: Wednesday, June 03, 2020 9:41 AM To: [email protected] Cc: Ron Greenman <[email protected]> Subject: Re: Structural Load And remember the building does not belong to you and it is NOT your responsibility to come up with a solution. The owner, via his representatives (the GC, the structural engineer, and ultimately, the architect) is responsible for building a code-compliant building that includes supporting any live or dead loads, including the sprinkler system. And I'm guessing that in California insufficient point loading for hanging would the least of your concerns regarding structure. Ron Greenman [email protected]<mailto:[email protected]> 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-) On Wed, Jun 3, 2020 at 9:26 AM John Denhardt via Sprinklerforum <[email protected]<mailto:[email protected]>> wrote: I agree with Ken. I have been down this road before. The structure needs to support the piping plus 250 pounds at the point of hanging. If the structure can handle this load, then the structure has an issue. Thanks, John [https://www.dropbox.com/s/g4h8r7hdtsr6154/AFSA_L.png?raw=1] John August Denhardt, PE Vice President, Engineering and Technical Services American Fire Sprinkler Association m: p: 301-343-1457 214-349-5965 ext 121 w: firesprinkler.org<http://firesprinkler.org> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/facebook_sig.png]<https://www.facebook.com/firesprinkler.org/> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/twitter_sig.png] <https://twitter.com/afsa/status/1039528345367732224> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/linkedin_sig.png] <https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/instagram_sig.png] <https://www.instagram.com/firesprinklerorg/> Help AFSA “Sound the Alarm” about sprinklers! AFSA’s charitable partner the American Red Cross is educating millions through its Home Fire Preparedness Campaign. Help us support the inclusion of fire sprinklers in their messaging. Donate today!<https://www.redcross.org/donate/cm/afsa-pub.html/> On Wed, Jun 3, 2020 at 12:18 PM Parsley Consulting via Sprinklerforum <[email protected]<mailto:[email protected]>> wrote: Jerry, Although I'm slightly unclear over what you're being told I would make sure that whoever is providing that information to you has read 9.2.1.3.1 of the '16 edition of -13: 9.2.1.3.1 Sprinkler piping shall be substantially supported from the building structure, which must support the added load of the water-filled pipe plus a minimum of 250 lb (115 kg) applied at the point of hanging, except where permitted by 9.2.1.1.2, 9.2.1.3.3, and 9.2.1.4.1 9.2.1.1.2 deals with toggle hangers supporting pipe 1½" and smaller, 9.2.1.3.3 covers flexible hose fittings, and 9.2.1.4.1 covers branch hangers into a metal deck. It's pretty clear that the structure has to be able to support at least the load noted in 9.2.1.3.1. As I am a principal member of the hanging and bracing committee, please see the disclaimer below. sincerely, Ken Wagoner, SET Parsley Consulting 350 West 9th Avenue, Suite 206 Escondido, California 92025 Phone 760-745-6181 Visit the website<http://www.parsleyconsulting.com/> IMPORTANT NOTICE: This correspondence is not a Formal Interpretation issued pursuant to NFPA Regulations. Any opinion expressed is the personal opinion of the author and does not necessarily represent the official position of the NFPA or its Technical Committees. In addition, this correspondence is neither intended, nor should it be relied upon, to provide professional consultation or services It should be noted that the above is my opinion as a member of the NFPA Automatic Sprinkler System Hanging and Bracing Committee in accordance with the NFPA Regulations Governing Committee Projects and should therefore not be considered, nor relied upon, as the official position of the NFPA or its Committees On 06/03/2020 8:25 AM, Jerry Van Kolken via Sprinklerforum wrote: I have a building where they are telling me the structural point loading on the framing less than 250lbs. (140lbs) Advice? Jerry Van Kolken Millennium Fire Protection Corp. 2950 San Luis Rey Rd. Oceanside, CA 92058 (760) 722-2722 FX 722-2730 _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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