I goofed and laid out the sprinklers at 225sf but have made the corrections by adding some sprinklers and bringing them down to 130sf. It just seems weird that the same unit when finished is considered part of the dwelling unit and can be protected with residential heads calculating 4 max while on the unfinished side I have to pick up 900 sf min because it's larger than the 500sf exception of 6.8.2.2. There could potentially be the same fire load in each. Dewayne
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Friday, April 09, 2010 9:40 AM To: [email protected] Subject: Re: Unfinished basements in 4-family NFPA 13R occupancy What is your basis for ignoring the area of coverage criteria and the known impact produced by closely spaced members? Besides the Annex states part of the guidance from 13 is indeed the number of sprinklers which is driven by the allowed area of coverage which is driven by the type of construction. Roland On Apr 9, 2010, at 4:22 AM, Dewayne Martinez wrote: > 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 > Design Build Fire Protection > New Berlin, WI > _______________________________________________ > 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)
