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I searched the archives and didn't find a discussion on this topic. Here's my question? Can I extrapolate out beyond the 10'-0" length on the section modulus required for trapeze in table 9.1.1.6.1(a) '07ed.? A fitter called this morning wanting 14' trapeze hangers for 4" pipe. He was placing the main in the wrong location but it brought up an interesting question. I noticed that the section modulus has a linear increase with trapeze length. For 4" Sch 10 y=.085x, where y=section modulus & x=Trapeze length. So, for a 14' trapeze for 4" sch 10, would a 1.19 section modulus work? Do I have to have the initials PE after my name to think these thoughts? Thanks, Randy Knutson Shilo Automatic Sprinkler, Inc. _______________________________________________ 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)
