For those that havent seen a scissor stair (yes that's the official moniker) heres a link to a drawing of one;
http://www.acstairmaster.com/stairs_images/stairs_pages/images/scissor_stair s_image.gif John Drucker Fire Protection Subcode Official (AHJ) Borough of Red Bank, NJ Safe Buildings Save Lives ! -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Leyton Sent: Wednesday, July 23, 2008 6:44 PM To: [email protected] Subject: RE: Standpipe/Stair arrangement Don't know if there's an official moniker, but we call it a scissor stair and it's an architectural device that satisfies at least two of your required exits and gets a LOT of your occupant load out of the building in a relatively smaller (and localized) footprint area. The code requires that standpipe connections be located at either the intermediate or floor level landings of every required exit stair so I believe it is correct to put a standpipe connection at the landings of EACH stair (i.e. two per level within the shaft) because you have two stairs. Steve Leyton Protection Design & Consulting The foregoing is my opinion only and is not intended to represent the Technical Committee on Standpipe Systems, nor serve as an interpretation of NFPA 14. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Fletcher, Ron Sent: Wednesday, July 23, 2008 3:32 PM To: [email protected] Subject: Standpipe/Stair arrangement This is a tough one to put into words, drawings would better explain. We have a stair tower (one of three) in a hotel that has two entrance/exits on the first through fourth floors and one door on the other 27 floors. There is no dividing wall between the stairs. Imagine two people enter through separate doors on the first floor and as they head up the stairs they pass each other halfway up to the intermediate landings. You could actually climb over the railings from one stair to the other. We have installed a single standpipe through the floor landings on floors 5-27 and continued to the first floor. Now the AHJ is thinking we need a hose valve adjacent to the other entrance on floors 1-4. Both doors access the same fire area. I hope y'all can decipher. Ron Fletcher Aero Automatic Phoenix, AZ _______________________________________________ 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) _______________________________________________ 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)
