Mr. Fetter, you sure do ask a lot of stupid questions. Rosanne Rosanna-Danna
Oh wait, it's the forum. Thought it was sent just to me. See below Steve Leyton Protection Design & Consulting San Diego, CA (The following is my opinion only and does not necessarily represent the opinion or intent of the NFPA 14 Technical Committee on Standpipe and Hose Systems.) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Saturday, November 01, 2008 11:05 AM To: [email protected] Subject: RE: Standpipe system Steve: Just for my own clarification. When you have a single story building, and a Horizontal standpipe system with say 3 or 4 hose stations: 1. do you still need to test at 500 Gpm at the most Hyd. Remote hose station? A. 14 says you flow the two most remote connections - note plural. So if you have one at the top you can go down to the next. Or furnish two. Conflicts with the Building Code that says to furnish an additional connection for testing. Which slightly conflicts with the change just approved in ROP that clarifies that it's not the intent to provide two connections at the roof. 2. If yes, do you install a second hose valve at that location, for flow testing? A. As noted above, per the Building Code you furnish a second connection for testing. 3. If yes, does that second valve count as an additional hose station? (Say if you had two required, and added the third valve for testing, would you now have to calc. three? (750 Gpm instead of 500 Gpm?) A. No. If the only reason you furnish a second valve is for testing, it's invisible as far as impact on water supply, demand, calc's, etc. 4. Can a required hose station have more than one hose valve and still be considered a single hose station, even if the valves are of the same size? (Yes I've seen the ever popular 2-1/2" hose valve in a cabinet(see croker 2400 series cabinets) with the 1-1/2" valved hand line. Since you calc. the 2-1/2" because of the greater flow and pressure I've just never considered them as separate hose stations. One is for one groups use, and the other is for the fire fighters.) A. Geez Thom, you couldn't come up with a more obtuse question? Yes, see my response to #3. And remember that the 750 GPM requirement doesn't kick in until you have three or more connections off of any one standpipe, not just on any one floor if served by more than one standpipe. 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 Subject: Re: Standpipe system Keep in mind that if you have 3 or more hose connections on any one floor supplied by a single standpipe, the demand is 750 GPM. IF you have more than one standpipe riser, it's possibe to arrange them as 1+3 or 2+2 or 3+1, so you really need to do this thoughtfully. Sounds like you might need another pair of eyes? Steve Leyton Protection Design & Consulting _______________________________________________ Sprinklerforum mailing list http://lists.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) __________ Information from ESET NOD32 Antivirus, version of virus signature database 3575 (20081031) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3575 (20081031) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
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