9.1.1.6.3: Holes through solid structural members shall be permitted to serve as hangers for th support of system piping provided such holes are permitted by applicable building codes and the spacing and support provisions for hangers of this standard are satisfied.
Challenge: Is a composite wood I-joist considered a solid member? I would say not, based on an interp we got years ago that such members were not heavy enough to meet the intent of the definition of panel construction, i.e. "members capable of trapping heat". Notwithstanding my opinion, is the structural engineer of record willing to sign for the web material as meeting the load-bearing criteria of NFPA 13? Is the building or fire official willing to hear that opinion? Have you contacted the engineering department of the joist manufacturer? SL -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Travis Mack, SET Sent: Friday, August 28, 2015 11:30 AM To: [email protected] Subject: "HANGING" When installing piping through TJI, are you required to provide a hanger on the piping? For years in this area, guys drill the TJI and run CPVC through them without a hanger. A new inspector is now requiring the fitter to go back and add hangers on a large 4 story building. What are your thoughts? I was under the impression that installing in this manner, you are laying the piping on the structure and the structure is essentially your hanger, so no additional hangers are needed. -- Travis Mack, SET MFP Design, LLC 2508 E Lodgepole Drive Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 email:[email protected] http://www.mfpdesign.com https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to us via: https://www.hightail.com/u/MFPDesign _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler .org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
