Tom, (Emphasis in CAPS) You didn't mention the adopted codes and standards, however if it's the model IBC it's a mixed use BUILDING not a one/two family DWELLING. The horizontal fire separation assembly between the mercantile and residential USES and the vertical fire separation assembly between the dwelling UNITS doesn't change that, it's still a mixed used BUILDING. As such the correct fire sprinkler standard is NFPA-13.
John Drucker, CET Fire Protection Subcode Official Fire/Building/Electrical Inspector Fire Marshals Office Borough of Red Bank, NJ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tom Duross Sent: Saturday, May 15, 2010 2:40 PM To: [email protected] Subject: RE: Residential Building Well I'm back. They didn't built it the way they drew it (so what else is new?). The permit said residential 2 family with retail. Never seen this before. Todd, I might have to poke your brain some on this, off forum. 2 1000SF condos upstairs with separate interior and exterior stairs down. 5' covered farmers porch on three sides, exterior stairs empty in at each end. They did say 2 hours vertically between units and 3 hours on the retail ceiling (they state 2 hours with a head equals three on the field set of plans). Ton's of combustible spaces in the condos with three roof lines and cathedral ceilings. Wind bracing like I've never seen before. This is going to be a challenge because they want everything concealed (all engineered lumber), the lofts over the bedrooms, baths and closets are open to the living/kitchen spaces, tons of dormers with ceilings, etc. I still don't know why it even has to be sprinklered but it's marked on the field set so something must have been traded is all I can tell. Time to study. td I doubt if you can claim that the upstairs is 13D. Unless you have the appropriate fire separation, the whole building would need to be treated as 13. I would look at it as 13 Residential. The test that I and a few others use id that if the areas outside the dwelling units are for use only by the tenants or are incidental to the residential occupancy, then you can use 13R/13D. Otherwise, it is mixed use and needs to be protected per 13. It sounds like you have the latter. Remember, the permit and the hazard are mutually exclusive. Enjoy the Cape _______________________________________________ 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)
