July 2, 2019
This is the first time I am posting on this forum. Someone over on Archinect informed me of this forum. So here it goes!
I have a colleague interested in converting an existing 2-family, 3-story residential building into a 3-family in NJ. Based on my research via the Rehabilitation Code and Uniform Construction Code, this would require a change from an R-3 TO R-2 occupancy. Because of this, there is an increase in hazard.
When converting from a 2-family, to a 3-family residential building, I would either have to sprinkler the entire building or switch from TYPE V-B Construction to TYPE V-A Construction, which would require a 1-hr fire rating for all exterior & interior bearing walls and floor and roof construction.
Does this seem to be accurate?
I have jumping between the New Jersey REHABILITATION SUBCODE, https://www.nj.gov/dca/divisions/codes/codreg/ , Existing Building Code, and the IBC. Because I would be converting from a 2-family to a 3-family, the residential building code does not apply, but I want to make sure I am approaching the right conclusion!
I essentially want to confirm, based on the code, that installing an automatic fire sprinkler is not necessary for this situation, but 1hr fire rating all structural elements is.
Any assistance or input would be incredibly helpful and very much appreciated.
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