Hello Tony, Thankie Sir... This little ole apprentice designer stumper my NICET IV when I mentioned this to him and he wanted to see it himself.
Friday, May 4, 2007, 2:16:56 PM, you wrote: > Charles, > NFPA 13 (2002) 8.3.5 Thread Size Limitations > Tony Liddic, CET > Fire Sprinkler Designer > AEC Fire & Security > 400 Fame Rd. > West Carrollton, OH 45449 > 937-866-4158 > 937-865-0212 fax > [EMAIL PROTECTED] > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Charles > Thurston > Sent: Friday, May 04, 2007 2:12 PM > To: Greg McGahan > Subject: Re: 1/2" thread - 8 K sprinklers > Hello Greg, > Wednesday, April 25, 2007, 12:19:42 PM, you wrote: >> NFPA 13 clearly states that we can not use 8.0 k heads with 1/2" threads > in >> new installations. I assume there are reasons for this but I do not know >> them. > Does anybody have the chapter and verse where it states this handy ? I > can not find it. >> BUT, we have a new job with pipe on the floor and 1/2" welded outlets for >> 5.6 k sprinklers. The problem is we ran into some lights and are having to >> move some pipe which blows our calcs. (Our designer made a mistake and did >> not realize that the lights are not hanging, but are mounted to the >> purlins.) >> We had in excess of 10% cushion and now we have -5%. If we use the 8K > heads >> we are fine. >> The other option is to reorder all of the branchline piping 1 size larger. >> We reflowed the hydrants to confirm the water and lost 10 psi residual to >> make matters worse. >> Does anyone on the committee have any input before I ask the AHJ to > consider >> this change? >> Greg >> Living Water Fire Protection, LLC >> 1160 McKenzie Road >> Cantonment, FL 32533 >> 850-937-1850 >> Fax: 850-937-1852 >> _______________________________________________ >> 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)
