Scott - verify the size of main in the street. NFPA 13D doesn't require a traditional flow test (only a static pressure), but it's based on the assumption the public water main is 4" minimum.
If the main is indeed less than 4", a traditional flow test is justified. Even at the low total flow of 2 residential sprinklers, the pressure drop (residual pressure) in the 1 1/2" main can be significant. Now how to conduct a flow test on a 1 1/2" line is a whole different can of worms. Ed Kramer Littleton, CO. >> Do you recommend flow tests for residential systems? >> I want one, but most people are telling me, the 1.5 inch pipe out in >> the street with 50 psig is enough. (1.5 inch?????) >> >> Does not seem like enough information to me. Don't have a level of >> comfort with it. Have 2 stories above grade and want to use extended >> coverage heads. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
