It depends on how far below the roof you are as to how you brace it. We have a 2000 feet long run of 10-inch pipe but it is only 3 feet below a concrete ceiling (basement ceiling). To brace it between expansion joints we have plate welded to the pipe and a base plate with welded tab bolted to the ceiling with angle iron bolted to both tabs. Think bridge construction when visualizing this.
You don't say what your building framework is but presumably you don't have similar conditions. The cable bracing may be your only option. By the way the expansion joints are the longitudual slip joint type - original construction - but we have had no problem with them leaking. We did put linear stops on them to prevent them from pulling out, which almost happened one time. An open 10-inch pipe in the basement with fire pumps behind it would have been a sight to see. John Hoffman P.E. | Fire Protection Engineer | Facility Engineering Services, KCP, LLC - Burns & McDonnell Engineering | National Nuclear Security Administration's Kansas City Plant | Operated by Honeywell FM&T | 2000 E. 95th St | Kansas City, MO 64131 | ph 816-997-7213 | [email protected] From: Coastal <[email protected]> To: [email protected] Date: 07/01/2010 05:57 PM Subject: Seismic Bracing Sent by: [email protected] Hello Sprinklerforum, I am looking for ways to put longitudinal bracing on a straight run of 6" Schedule 40 pipe that can expand or contract About 5" with a temperature swing from 40 degrees to 100 degrees. This is a 1400' durn near straight run. I am looking at using a Metraflex Building Separation loop for an expansion loop. -- Best regards, Charles Thurston Coastal Fire Protection mailto:[email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.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 [email protected] http://fireball.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)
