Ok the requirement for standpipes has nothing to do with how tall any particular stair well is, but in IBC land, 30' above or below lowest level of FDP access. Where required, standpipes shall be installed in all "Required" stairwells. So if the stairwell is required for egress or occupant load, you put a stand pipe in it.
Ok so you are using a P/A valve and not a DPV because the AHJ requires that. Got it. If your using a P/A valve you'll need a listed release panel for those pull stations to connect too, that panel should be able to monitor the pull stations(I prefer to call them "Remote Manual electric release stations" but that gets a little long "RMERS")Even with a non interlock you can have a supervisory air supply, it's just a trouble signal, not a release device. (No PORV) P/A vs DPV, generally more maint. DPV operation pretty simple, and Hose valve air leakage is not an issue, it must hold 200Psi test just like every other part of the system. So in the end, you're stuck with the AHJ requirements. Will it work? Yes, but still not the way I would try to do it. 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 Greg McGahan Sent: Thursday, February 25, 2010 5:31 AM To: [email protected] Subject: RE: pull stations Actually, the "stubby" stairwell is kind of a grey area. It is a required exit stairwell therefore it requires a standpipe. However, it is only 20' tall and there fore would not normally require the standpipe. To better describe it, the stubby serves only the PG in the middle, the stairwell that serves the other 7 floors starts on the level above the PG and is staggered in plan view about 80' from stubby. Is a S/P required? I am not sure. Also, there is no hoses, these are only 2-1/2" hose valves. Greg McGahan Living Water Fire Protection (850) 937.1850 | Fax (850) 937.1852 | Cell (850) 554.3231 _______________________________________________ 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)
