I would use 130 sq.ft.,simply because it is outside the dwelling unit and requires 13 design and because of the structure (even for light hazard).
---- Dewayne Martinez <[email protected]> wrote: > Thanks Tom, > In this case the AHJ is letting us use LH. Any thoughts on the 225 vs > 130 spacing? > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Tom > Duross > Sent: Friday, April 09, 2010 6:49 AM > To: [email protected] > Subject: RE: Unfinished basements in 4-family NFPA 13R occupancy > > I use OH in residential basements, all steel and up through the floor, > then transition to plastic above the floor. > Tom > > > I have a 4-family 13R (07ed) building with unfinished basements. Please > confirm if my logic is on tract for sprinklering these areas. > For most AHJ's here, basements are not considered part of the dwelling > unit so they fall under section 6.8.2 - outside dwelling unit. > Only the design discharge and design area criteria from 13 apply so I > can sprinkler this area as LH with 225sf spacing no matter the type of > construction. IE: I don't have to reduce the head spacing to 130sf > because of the TJI's 16" O.C. > Sound ok? > Thanks, > Dewayne Martinez > > _______________________________________________ > 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) _______________________________________________ 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)
