Hello Thom, oopsie... I thought it was .10% or .10 psi safety in the calcs......
Too late on Friday Drinking has started.... Friday, July 25, 2008, 5:00:29 PM, you wrote: > Remember that 250# is a fat guy on a ladder, or actually a fat guy falling > off his ladder, grabbing the sprinkler pipe to save himself from a broken > neck, cause his boss gave him a safety harness and all the necessary gear, > and fall protection training, but he thinks he doesn't need it to just run > up the ladder and tighten a leaking head. > (This in no way reflects on, or is in ref. to Tom D.) > The five times is just a safety factor, same as you 10% or 10Psi in the Hyd. > Calc. > Thom McMahon, SET > Firetech, Inc. > 2560 Copper Ridge Dr > P.O. Box 882136 > Steamboat Springs, CO 80488 > Tel: 970-879-7952 > Fax: 970-879-7926 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Matt Willis > Sent: Friday, July 25, 2008 1:28 PM > To: [email protected] > Subject: RE: beam strength for hangers > >>But that didn't answer your question. In my opinion NFPA-13 only > applies to the hanger assembly itself. Does that mean the sprinkler > designer is off the hook ?. By no means >someone has to do the load > calculation otherwise the application is incomplete. > Exactly. The paragraph I mentioned (9.2.1.3) pertaining to the Building > Structure in 13 has been used to make the sprinkler contractor hire a > structural engineering firm to provide proof that we were in compliance > with Chap 9 of Our standard. In Todd's situation.. the hanger has to > meet 5 times plus 250. Since it is not listed under the section for > Building Structure in 13, the 5 times does not need to be added, only > the weight plus 250. > R/ > Matt > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.138 / Virus Database: 270.5.6/1572 - Release Date: 7/25/2008 > 6:51 AM > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) -- Best regards, Charles Thurston Coastal Fire Protection Coastal mailto:[EMAIL PROTECTED] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
