And holds 150+ PSI when its flowed, if a manual wet with <100 PSI on it from city..... If there are PRV FHVs, it would be nice to know they're set for 40 PSI instead of 110 PSI, as at Meridian in Phila. Would have saved the Phila FD several hours it took to get a sprinklerfitter on site with the special Giacomini wrench. Imagine if they'd been able to get wet stuff on the fire hours sooner? Hey, maybe there IS value to these tests!
George L. Church, Jr., CET Rowe Sprinkler Systems, Inc. PO Box 407, Middleburg, PA 17842 877-324-ROWE 570-837-6335 fax [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Morey, Mike Sent: Wednesday, January 11, 2012 8:54 AM To: [email protected] Subject: RE: standpipe pressure beginnings If I had to venture a guess, testing a manual standpipe verifies that it is free of obstruction as well as damage/leaks/etc? Mike Morey, SET, CFPS Sprinkler Designer BMW Constructors, Inc. O: 317.651.0596 | C: 317.586.8111 www.bmwc.com ________________________________ From: [email protected] on behalf of Todd Williams Sent: Wed 1/11/2012 8:45 AM To: [email protected] Subject: RE: standpipe pressure beginnings There are some buildings here that go back to the 1930s. The hospital was started in 1912, but I don't think anything is that old. Finding old building codes could be challenging. Standpipes may have even been retrofits. Unless there is date stamped on an original device, there may be no way of telling. Their records of construction are not that complete. I will probably have to make assumptions on age and come to some agreement with the AHJ. I think the best we are going to get is something that meets the intent of 25 based on what we can find. BTW, What is the purpose of testing a manual standpipe? I can understand with an automatic system because you are checking for water supply decline. As long as their haven't been any design changes and there are no pressure reducing devices, I can't see what problems could arise. The water supply boosted through a truck is going to more of a function of the apparatus than any internal building system. I don't get it. At 08:19 PM 1/10/2012, you wrote: >I've come across that before. With and without building pumps. I >asked and was told 'you tell us'. >With an external piece I'd limit the FDC pressure to 175 and try for >500, 250, 250.. For lack of no other suggestion. Close the FCV's. >I've had 3" standpipes with 1 3/4" FDV's, 2 1/2" with 1 1/2". You >really need to find what BC was in place, read it, and then find what >edition of 14 was referenced, if any. Gauge the hydrant, gauge the >FDC, don't trust the piece's (or Bldg. FP's) gauges for everything. >Welcome aboard. >TD > > >When were standpipes first stipulated to have a minimum pressure? I >would assume that at some point there was no minimum pressure standard >(in the days prior to hydraulic calculations). I am dealing with >buildings up to 100 years old. > >Todd G. Williams, PE > >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum -------------- next part -------------- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 5582 bytes Desc: not available URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120111/7f88a2ea/attachment.bin> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
