Sorry, I should have been clearer. We are tying onto a main near the riser with a tree configuration. On the existing system, on the lower floor, they system is a tree configuration that is pipe scheduled.
We are not going to perpetuate the dry grid madness. Jimmy Waite Burtell Fire Protection, Inc. [EMAIL PROTECTED] 406-652-7697 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roland Huggins Sent: Monday, March 26, 2007 3:37 PM To: [email protected] Subject: Re: Mezzanine Calcs. thats does NOT apply to gridded systems Roland On Mar 26, 2007, at 2:17 PM, Roland Huggins wrote: > Pipe schedule does to apply to gridded systems. > > Assuming you have a solid floor for the mezzanine, it's treated > separately. To ensure you have a large enough remote area, you > pick up part of the existing system at the roof level. > > Roland > > > On Mar 26, 2007, at 12:53 PM, Jimmy Waite wrote: > >> >> Dear Forum, >> >> We are currently working on a project where we are tying onto a >> dry, gridded >> sprinkler system, installed in 1985. There are two existing dry >> systems and >> they each cover an area of about 13,100 square feet. The lower >> floor is a >> tree system that was sized by "Table 3-7.1" of NFPA 13, 1984 Ed. >> The main >> floor is a grid that was designed at a .275/ 3000 square feet with >> 500 gpm >> hose allowance. The addition that we are sprinklering is only >> 2,000 square >> feet. On the main floor of the addition there is a mezzanine of >> about 1,000 >> square feet. Is a calculation even needed for such a small >> addition, or can >> we use the existing pipe sizing as our guide? If a calculation is >> required, >> would we calculate the sprinklers along the roof deck by >> themselves, or do >> we need to include the sprinklers under that mezzanine in our >> calculations >> as well. >> >> Thanks for the help >> >> Jimmy Waite >> Burtell Fire Protection, Inc. >> [EMAIL PROTECTED] >> 406-652-7697 >> >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >> > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
