NFPA 13 does not allow smaller than 1" steel pipe (except in a specific situation for retrofit). For copper and CPVC, NFPA 13 permits ¾" pipe.
On 6/14/2010 1:07 PM, James Zimmerman wrote: > I have a specification that states nothing less than 1" pipe shall be used > for a sprinkler system. Is there anywhere in NFPA 13 that prohibits the use > of 3/4" pipe? I know in the 2007 Edition 8.15.19 states new installations > shall have a minimum of 1" outlets for piping supplying sprinklers below > ceilings. This section doesn't specifically come out and state that all > piping must be 1". In 8.15.19.4 all piping with the exception of a 4" nipple > shall be 1" minimum. > Am I missing something or is 3/4" allowed per NFPA 13? > > Thanks, > > Jim > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
