Matt what kind of job are you working on with CPVC piping on it? Also what exactly is their comment? Could they be saying you don't need to brace it if it's under 2.5"?
Craig L. Prahl, CET Fire Protection Group Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [EMAIL PROTECTED] http://www.lg.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, April 04, 2007 2:19 PM To: [email protected] Subject: Re: Re[2]: CPVC & Seismic Bracing Charles, That's exactly how it was going to be done. For some reason the guy at the State Fire Marshall's Office is hung up on the fact it says "2 1/2"". Very frustrating. Matt |---------+----------------------------------------> | | Charles Thurston | | | <[EMAIL PROTECTED]> | | | Sent by: | | | [EMAIL PROTECTED]| | | prinkler.org | | | 04/04/2007 03:08 PM | | | Please respond to | | | sprinklerforum | |---------+----------------------------------------> >-------------------------------------------------------------------------------------------------------------------| | | | | | To| | "[EMAIL PROTECTED]" <[email protected]> | | cc| | | | Subject| | Re[2]: CPVC & Seismic Bracing | | | | | | | | | | | | | >-------------------------------------------------------------------------------------------------------------------| Hello Matthew, I did some seismic for CPVC here in SC a few months ago. Using the Afcon Lateral brace for Longitudinal brace om 1 1/2" pipe. The part number is #030/040 Sway Brace (Model K). See Below Main | | 6" nipple with Cap Same size as the main pipe T-Fitting > |--------) | ^ | ^ ^Attach Brace here running along arrows. I put this note on my drawings RIGHT below the detail picture (YOU need to edit the values for YOUR piping): >T Fitting in pipe with 3" nipple and pipe cap for attachment. >T Fitting and nipple are same size as pipe run. >(8 locations) >We request acceptance of the proposed longitudinal bracing support as >detailed above as an alternate method of construction per State >Regulation 71-8300.12. We believe the proposed installation meets the >intent of longitudinal bracing requirements for this project. >The weight of 59 feet of 1 œ" waterfilled CPCV piping and 15 feet of 1" >waterfilled CPVC piping 83.603 and 10.125 pounds respectively >(1.417 lbs/foot for 1 œ" piping and .675 lbs/foot for 1" piping per >Blazemaster Pipe Dimensions and Weight table found on page 16 of the >April 2006 Blazemaster Engineering Manual). If you need a detail for this look on the Afcon Site or contact me off list and I will dig it out and send it. Wednesday, April 4, 2007, 1:09:02 PM, you wrote: > 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. If you received this in error, please contact > the sender and delete the material from any computer. Any views > expressed in this message are those of the individual sender and may > not necessarily reflect the views of the company. > ------------------------------------------------------------------------------------------------------- > _______________________________________________ > 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) -- Best regards, Charles mailto:[EMAIL PROTECTED] _______________________________________________ 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)
