Although it may not applicable to this project, under the 2007 edition, PA system piping is now required to be pitched.
The DoD, under the UFC guidelines typically requires an operating area of 3,000 sf, plus 30% for PA. The "major defense contractor" may be held to this criteria, in which case the 1-hr separation is critical. Ray Schmid -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Thursday, April 12, 2007 5:53 PM To: [EMAIL PROTECTED] Subject: Computer rooms 1200 Sf computer room, raised floor. Ceiling height unknown, maybe at roof? Media storage unknown, major defense contractor, possibly reel to reel or stacked DVD/CD. Computer racks, unknown. Main frames unknown. System loss impact to client unknown. Water supply unknown. Existing wet sprinkler system in place, Light or Ord haz unknown. To bid this project today we are assuming the following: Minimum adequate water supply at room 50 Psi @ 250 Gpm in nearby fire sprinkler main. (less than 50 LF away) Flow control preaction system OH II design density ceiling /roof and under floor protection Alarm and detection by others Electric by others Fire extinguishers by others Minimum 1 hour rated room Anyone see anything I should have said besides "Forget it"? Or Add 100% for lack of candor. Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "Roland Huggins" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, April 12, 2007 1:21 PM Subject: Re: CPVC products > You'll want to confirm that the LISTING allows mixing. I looked in the > past for mixing fittings and elbows (metal) from different manufacturers > and the two are generally restricted to be from the same mfg. > > Roland > > On Apr 12, 2007, at 9:58 AM, Paul Sincaglia wrote: > >> Folks- >> >> Just a general question regarding CPVC. >> >> As a specifier, I normally make no distinctions regarding the >> manufacturer or brand name for piping or fittings. I simply state the >> material and relevant/applicable ASTM standards etc. After all, I want >> my clients to get the best pricing and open specs tend to do that. >> Obviously I make exceptions to that if I have a good reason (hydraulic >> performance, specific feature needed/wanted, similarity with an owners >> other systems etc.) >> >> Which brings me to my question...Is there any need to be more specific >> about CPVC products? I have always held the belief that CPVC is CPVC. >> Provided that supplier of pipe and/or fittings maintains a UL listing >> (or other listing) for their products for fire protection use, then the >> parts are essentially interchangeable. Am I wrong? >> >> I know that Blazemaster in their literature will generally steer you >> toward product mfg/suppliers that use their resin and assume the others >> do the same. But I have always seen this as being the equivalent of GM >> wanting me to use Genuine GM parts. >> >> Does anyone have any hard factual data to the contrary such as technical >> bulletins etc. >> >> Thanks >> >> Paul Sincaglia >> >> >> >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Chris >> Brown >> Sent: Wednesday, April 04, 2007 1:43 PM >> To: [EMAIL PROTECTED] >> Subject: RE: CPVC & Seismic Bracing >> >> Maybe this will help >> >> To register click on this link https://www.krm.com/clse >> >> Topic: New Seismic Requirements with NFPA and IBC The topic of seismic >> design has become well known to many over the past five years. And like >> many, your learning experience has most likely come with a cost. The >> new editions of NFPA and IBC have arrived and offer a much more >> understandable process for those of us involved with fire protection >> systems to apply. This seminar has been organized with condensed >> step-by-step information that leads from the "when" through to the >> "how". Whether you have wrestled with this before or you have not yet >> experienced this process, this seminar will be valuable to both >> engineers of record, sprinkler system designers and authorities of >> jurisdiction. You do not want to miss this. >> >> >> Thank you, >> >> Chris Brown >> Fire Protection Designer, Poole Fire Protection >> Office: 913.829.8650 Direct: 913.747.2056 Cell: 913.208.3600 Fax: >> 913.829.8690 >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of >> [EMAIL PROTECTED] >> Sent: Wednesday, April 04, 2007 12:09 PM >> To: [EMAIL PROTECTED] >> Subject: Re: CPVC & Seismic Bracing >> >> Roland, >> >> That's exactly what I thought and tried to explain to the South Carolina >> State Fire Marshall's office. They insist the piping has to be 2 1/2" or >> larger. >> >> Matt >> >> >> >> |---------+----------------------------------------> >> | | Roland Huggins | >> | | <[EMAIL PROTECTED]>| >> | | Sent by: | >> | | [EMAIL PROTECTED]| >> | | prinkler.org | >> | | 04/04/2007 12:32 PM | >> | | Please respond to | >> | | sprinklerforum | >> |---------+----------------------------------------> >> >>> --------------------------------------------------------------------- >>> -- >> --------------------------------------------| >> | >> | >> | >> | >> | >> To| >> | [EMAIL PROTECTED] >> | >> | >> cc| >> | >> | >> | >> Subject| >> | Re: CPVC & Seismic Bracing >> | >> | >> | >> | >> | >> | >> | >> | >> | >> | >> | >> | >> | >> >>> --------------------------------------------------------------------- >>> -- >> --------------------------------------------| >> >> >> >> >> the pipe size on the branch line is when a sway brace is REQUIRED for >> the branch line. That criteria does NOT eliminate the requirement to >> sway brace the main by use of an offset brace thus size is immaterial >> (except for the brace being listed for the size of interest). If the >> brace wasn't listed for 1 inch (which it is), then as the designer, >> you'd need to size the starter piece to meet the needs of the brace. >> >> Roland >> >> On Apr 4, 2007, at 8:35 AM, [EMAIL PROTECTED] wrote: >> >>> I know this was discussed recently but I don't think this specific >>> point was brought up. Currently there is only one listed sway brace >>> for CPVC and it is a lateral brace. Now in order to provide >>> longitudinal bracing it was suggested to install a lateral brace on >>> the branch line within 24 in. of the main. However if you read >>> 9.3.5.3.5 it states "...for lines that are 2 1/2" and greater in >>> diameter". So what do you do for a 13R system with lets say 1 1/2" >>> mains and 1" branch lines? >>> >>> Matt Drewello >>> >> >> _______________________________________________ >> 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) >> >> >> >> >> ---------------------------------------------------------------------- >> -- >> ----------------------------- >> The information transmitted is intended only for the person or entity to >> which it is addressed and may contain proprietary, business- confidential >> and/or privileged material. >> If you are not the intended recipient of this message you are hereby >> notified that any use, review, retransmission, dissemination, >> distribution, reproduction or any action taken in reliance upon this >> message is prohibited. 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