I believe Joe will back me on this one- and it's a matter of who gets to drive the coordination machine-
You've got to change your outlook on this completely! Unless you're retrofitting an existing building with ESFR, and the lights are existing, you need to reverse the order of priorities in your questions as follows: DO THE LIGHTS NEED TO BE SPACED AROUND MY ESFR's no matter how far below the deflector the light is installed? You'll find coordination and spacing within the FM parameters is far easier when you lay your lines in with the joist panels for clearance, then furnish a copy of your layout to the EC and MC and say- here's the head layout, here are the clearance requirements, MISS US. Going back almost 20 years, the premise was straightforward, and this is what I understand the inventor of the concept (FM collectively) stated: THE BUILDING WILL BE DESIGNED AROUND THE ESFR SYSTEM. There are buildings where we've had to force shifting of joists, sliding roof openings within the joist channel, fattening and shortening a WF beam so we could spray under it, things we used to not believe we could do, but HAD to do- or we couldn't put a system in that complied with the criteria. They can tell you you have to do something all day, but you CANNOT, no matter how much they huff and puff, stick three rows of ESFR heads in a 20' bay, as an example. So put on your tough guy look, or hire Guido and Stubby to attend coordination mtgs, but just hold your ground and observe "I'd like to help you out, or comply with the contract spec that set us last in coordination priority, but if we cannot put ESFR in the building as specified de to the coordination dilemma, then here's the extra for the IRAS. And here's th extra for the larger fire pump when IRAS flows are added to the roof system. We used to send our supt to mtgs when I worked in Pgh. Deke was a bearded guy who could give a guy a cold stare that made him wonder if this 6'10 fitter with scraggly beard was going to eat him or kill him. Tinknocker sketchers didn't stand a chance. Harry, if you run into him in Pgh area, tell em I said Hi! glc -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mark Hasenmyer Sent: Wednesday, October 24, 2007 11:07 AM To: [email protected] Subject: ESFRs and Lights Do you have to space to lights with an ESFR no matter how far below the deflector the light (19-inch diameter) is installed? The way I read 8.12.5.2 (2002) is that as long as the light is between the top of storage and the ESFR, you have to be 1-foot away horizontally; even if the light is 4, 6 or 8-feet below. Mark Hasenmyer, PE MEH Fire Protection Engineering LLC 1311 River Oaks Drive Flower Mound, TX 75028 Office (972) 874-2662 Fax (972) 874-5591 _______________________________________________ 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)
