No in the past before calculations there was a requirement in NFPA 13 to actually space the sprinkler in a staggered pattern rather than the way we space them today. Normally you would have ten foot spacing and the starter pieces in each line were done such that the sprinklers on one line were staggered so that the sprinklers on the next line were on the half space.
Mike Brown -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of IPA Sent: Wednesday, March 12, 2008 3:50 PM To: [email protected] Subject: Re: Pipe scheduled systems - head stagger When you say 'staggered' you mean a single row of pendants being fed off of two rows (staggered) of upright piping? If this is the case I would think it would be merely for keeping pipe size down on each BL. Instead of taking 7 pendants, for example, off of one of the lines and having a lot of 2 inch they might have tried to split it up and keep the line sizing down to 1 1/4" or 1 1/2" eliminating the need for 2". Just my .02 cents. I've considered doing something similar to a hydraulically calc'd system I'm working on right now. On 3/12/08, Dewayne Martinez <[EMAIL PROTECTED]> wrote: > > I have a retrofit of a system put in in 1963 where the heads on the > branch lines are staggered. What was the reasoning for this back then? > Thanks, > Dewayne > _______________________________________________ > 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) > _______________________________________________ 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) _______________________________________________ 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)
