Anyone want to venture a guess on whether water flowing through 2 systems is more or less hydraulically demanding than that flowing through one? Granted you could have a case where a higher hazard in a relatively small area is centered between systems that MIGHT be more demanding with two flowing but until I see the numbers, I'm not going to pick the fly**** out of that pepper. The calc applies to one system. Having said that the criteria as Chris pointed out is a tad loose and leaves it open for SMALL systems. Case in point, you have a 1,500 sf building and really bad water. One might consider putting in two system at 750 sf each and claim that is the size of the remote area since it is the entire system. I had this exact issue before this cycle and after butting heads over it can say the text did not cover that situation. It does now in the Annex of 2010 in A. 11.2.3.1.4(1) where it states:
The area of sprinkler operation typically encompasses enough of the floor area to make-up the minimum allowed size of the remote area up to the entire area of a single floor of the building Roland On Jan 14, 2010, at 4:30 AM, Dewayne Martinez wrote: > Chris, > I still think that if the hydraulically most demanding area falls > either > between 2 systems or branch lines off 2 separate cross mains, you > still > need to pick up the full remote area for the area/density method. The > fire will not know what sprinklers are supplied from which pipe. You > still must pick up the " hydraulically most demanding area". > Dewayne _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
