Todd, Pipe schedules using 3/4 - 1 - 1 1/4 were common in the early days. I have done many re-vamp jobs around Atlanta where it was required by NFPA 13 to change all the 3/4 pipe to 1". I never saw a 3/4 - 1 - 1 but it is possible from 1884. I don't know how that would calculate unless you have a great water supply. My 2 cents.
Lamar Vaughn On Wed, Mar 16, 2016 at 7:45 AM, Matthew J Willis <[email protected]> wrote: > Ah.., but the crux is, Are you working there under 25 or 13? > > R/ > Matt > > Matthew J. Willis > Project Manager > Rapid Fire Protection Inc. > *NEW ADDRESS* > 1530 Samco Road > Rapid City, SD 57702 > Office-605.348.2342 > Direct Line-605.593.5063 > Cell-605.391.2733 > Fax:-605.348.0108 > > > > > > -----Original Message----- > From: Sprinklerforum [mailto: > [email protected]] On Behalf Of Art Tiroly > Sent: Wednesday, March 16, 2016 6:25 AM > To: [email protected] > Subject: RE: Old pipe schedule > > What is the sprinkler spacing? > Staggered spacing was quite common before 1940. > Newer heads installed? > High pressure water supply connected? > It likely will barely do .10 density or maybe .15 with moderate pressure. > FM used to allow 3-5 psi at end head for pipe schedule. > > Art Tiroly > ATCO Fire Protection > > -----Original Message----- > From: Sprinklerforum [mailto: > [email protected]] > On Behalf Of Todd Williams > Sent: Wednesday, March 16, 2016 7:22 AM > To: [email protected] > Subject: Old pipe schedule > > I am working on a project in a mill that was constructed in 1884. On the > top floor, the branch piping is 3/4 - 1 - 1. Was there an older version of > pipe schedule that allowed smaller pipe or is this just undersized? > Hopefully some of you history buffs (or at least those with a bunch of old > stuff) would know. > > Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT > 860-535-2080 (ofc) 860-608-4559 (cell) > Sent using CloudMagic > [https://cloudmagic.com/k/d/mailapp?ct=ti&cv=6.0.64&pv=8.2] > _______________________________________________ > 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 > > _______________________________________________ > 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
