Not sure what the original reasoning was. Cost and availability of 5" is an issue now. Cheaper to use the much more readily available 6" offerings.
On a side note: There is a building I know of near my office that we do work in regularly, I send my designers there to survey the existing system (it is pipe scheduled) just to see if they pay attention to the sizes. Most get the 3.5" and 5" wrong. I use it as a learning tool. Mike Hill -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Justin Reid Sent: Thursday, February 09, 2012 12:34 PM To: [email protected] Subject: Re: Common Pipe Size Question I looked up fire protection couplings(random manufacturer) and did not find any 3.5" couplings but they did have for 3" and 5". Is the lack of use of 5" just cost versus benefit? Thanks for all of the quick replies. Justin Reid _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
