For many years fitters bent the lip of Z-purlins with a crescent wrench and installed small mouth beam clamps. The buildings never fell from this technique to my knowledge even thought this is not correct. Recently we hired a fitter that had work for some of our competitors in the past and evidently they still bend the lips because that is what he started to do before we caught him.
We have used large mouth beam clamps and the purlin hangers which are huge and very expensive. We have only had one job in which the large mouth beam clamps were a problem. We do NOT bend the lip anymore and haven't for 12 years or so. We have used the screws installed on the vertical and it seemed to take a lot longer to install the pipe. Maybe the screws are better than they used to be. Greg Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 Fax: 850-937-1852 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Duross Sent: Thursday, September 27, 2007 5:38 PM To: [email protected] Subject: RE: Pipe clamps on Z purlins The first steel building I ever did I used a Michigan cast iron Z purlin hanger that had a lock bolt like a top beam and it slipped right on the bottom of the purlin, even had the angle of the lip of the purlin cast into it. Worked well but they were $$, only came in 3/8", the rod stays perpendicular to the roof slope. I used sammy express hangers on one too, upper lip of the purlin under the roofing, again only 3/8". They were ok too. I haven't used the swivels but I would guess they go on the upper lip as well? I was told (when we were installing angle for the 1/2" rood hangers) not to drill the vertical of the purlin. These engineered steel buildings are strange animals. Tom Duross GRS FGOL Besides the Erico and Sammy products, Tolco has a universal swivel the you can install on most rod-type clamps and anchors that allows the load to hang plumb even if the attachment is sloped. Steve Leyton Away from the office - sent from my BlackBerry _______________________________________________ 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) _______________________________________________ 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)
