Here is an interesting question: In the event that you do not have an adequate amount of water flow (in terms of GPM) is it acceptable to flow the 4-1/2" pumper connection in lieu of the standard 2-1/2" connection on the side ? I know that in NFPA 291 it is recommended to only blow off the 2-1/2" outlet but when you blow off the pumper connection there is a formula used to reduce it. However, even after the formula reduction you still have a far higher amount of water (once again, in terms of GPM). My question is this, can you use that GPM in your hydraulic calculations ? I would have to think that most AHJ's would be hesitant to allow this to be used since you are artificially inflating the water supply.
What does everyone else think ? Sean Lockyer Project Designer 4617 Parkbreeze Court Cell 386-279-1197 Orlando, Florida 32808 [email protected] Phone: 407-816-9101 www.AITLifeSafety.com Fax: 407-816-9104 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
