Are you using a specific manufacturer sprinkler? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT www.fpdc.com
On Jun 29, 2013, at 11:16 PM, Greg McGahan <[email protected]> wrote: > Hello, > > We have an existing system installed 20 x 20 with 14.5K ECOH sprinklers. They > have now installed a new wall separating the space into 2 spaces and left > the sprinklers overspaced off the wall. The Calc plate indicates that the > design was originally .15 fpm over 2,000 soft and when we re-calc the system > we are nearly identical to the results recorded on the data plate. If we > calculate it at .20/1,500 it does not work. > > Question is how to we even begin to sort this out in order to add a row of > new heads to correct the overspacing? The new sprinklers all seem to be > specifically listed for .20 (OH2) and i do not see a loophole to utilize a > lower density and a larger Remote Area as in the original design. I also do > not see an allowance in 13 for such a scenario (similar to the allowance for > modifications to existing systems with residential heads that were originally > designed for less than 7 psi end head pressure) > > I do not think there will be any salvaging this system if we cannot reduce > the density… > > Thanks for any help, > Greg > > _______________________________________________ > 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
