I wouldn't see the harm in asking. You could also go inand install the k5.6 heads, re-run the calcs, and then retro the 1/2 K8 heads in accordance with the code into what is now an "existing" system. glc
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Greg McGahan Sent: Wednesday, April 25, 2007 12:20 PM To: [email protected] Subject: 1/2" thread - 8 K sprinklers 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. 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) _______________________________________________ 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)
