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
