TALCO fig. 52,56 and 58 Side beam hangers are only listed for up to 4" pipe. Fig. 51 is listed for 6 & 8", but you need to use the 1/2" lag bolt of appropriate length (3") per 9.1.5.3.1. The bigger problem is the seismic loads which make you use 9.3.5.9.1 to size thru bolts and lags, where the min for 6" is a 4-1/2" lag. (Into a 4" beam?) Thru bolts only allow 485# on a single thru bolt 1/2".
So besides the structural engineer approval, you'll need to check the anchors and fasteners. 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 Parsley Consulting Sent: Wednesday, July 15, 2009 8:16 AM To: [email protected] Subject: Structural concerns John, I'm looking at one of those now. A designer has sent me a set of plans for review and is just incensed that I would question the ability of a side beam bracket in a 4x12 to properly support the weight of a 6" main. He was equally upset when I asked if he had information from the structural engineer to endorse the same member accepting a horizontal force of almost 800 pounds in lateral seismic loading. He told me stuff about my mom that I never knew. PARSLEY CONSULTING Ken Wagoner, SET 760.745.6181 voice 760.745.0537 fax [email protected] <mailto:[email protected]> e-mail www.ParsleyConsulting.com <http://www.ParsleyConsulting.com> website John Drucker wrote: > George, > > Some of us do. The 20006 IBC (Chapter 16 - 1602.1, 1606.2 1604.2) does > include provisions with regards to sprinkler piping loading. There > have been times when the loading of a structural member has been > questioned and where the structural engineer has responded by > "beefing" up the connection. If the fire inspector isn't picking it up the building inspector sure should be. > > > John Drucker, CET > Fire Protection Subcode Official > Fire/Building/Electrical Inspector > Fire Marshals Office > Borough of Red Bank, NJ > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of George > Church > Sent: Wednesday, July 15, 2009 5:03 AM > To: [email protected] > Subject: RE: Trapeze hangers? > > I saw a WalMart renov in York where the 6" main was c-clamped to the > bottom "wave" of those bar joists that have Z purlin material instead > of angle iron as a bottom chord. > > I moved over a few feet so as not to be walking underneath it. How can > anyone look at that and not raise a question? > > glc > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of J. > Scott Mitchell > Sent: Tuesday, July 14, 2009 11:22 PM > To: [email protected] > Subject: RE: Trapeze hangers? > > I saw an aircraft hangar once that had 8" bulk mains hung from this > light weight construction. The sprinkler contractor and structural > engineer put their heads together before hand. The result was strut > channel trapezes spaced 8 ft apart and spanning four z-purlins. > > The real headache comes when there is no engineer and the GC buys a > pre-engineered building from a building company who says the warranty > is void if you hang anything from the purlins. > > J. Scott Mitchell, P.E. > > --- On Tue, 7/14/09, [email protected] <[email protected]> wrote: > > From: [email protected] <[email protected]> > > It's very well possible. It all depends on the size and gauge of the > structural member. More and more installations are using > pre-engineered buildings which are typically of a light weight > construction and not really designed for much static loading from the steel. > > Craig L. Prahl, CET > Fire Protection Specialist > > > > > > _______________________________________________ > Sprinklerforum mailing list > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: > [email protected] > > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > > _______________________________________________ > Sprinklerforum mailing list > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: > [email protected] > > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > > > _______________________________________________ > Sprinklerforum mailing list > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: > [email protected] > > 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 - www.avg.com > Version: 8.5.387 / Virus Database: 270.13.14/2238 - Release Date: > 07/14/09 18:03:00 > > _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
