If the new area is closer to the riser, then no problem but I suspect if it were closer you wouldn't be asking this question since it's no different than than all calculations. It boils down to how do you know the results of the calc when extended into the area will produce the required density?
Roland On May 8, 2013, at 9:14 AM, Ralphy Henderson <[email protected]> wrote: > Hello, NFPA 13 quoted at bottom w/ the relevant code section: > > With the 15 ft. extending into the lesser hazard is the intention to make > this extended area part of the hydraulic design area (to be included in > calcs) or simply to extend the results of the calculations into this area? My > impression is the latter but I would like to see if people concur with that. > > Thanks, > RB > > > > > > NFPA 13: 2007 > > 11.1.2 > > (1) Where areas are not physically separated by a barrier or partition > capable of delaying heat from a fire in one area from fusing sprinklers in > the adjacent area, the required sprinkler protection for the more demanding > design basis shall extend 15 ft (4.6 m) beyond its perimeter. > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
