Concur that is is required to be classified in the R category. I was
playing from memory and thought it was more optional verses a SHALL.
Back to the question on type of system. I'm starting with the premise
that 903.2.8 dictating protection per 903.3 allows any type of system
that complies with the scope of the standard. Since the scope of 13D
is for one and two family dwellings and not residential occupancies,
it does not cover assisted living facilities.
The point to be made is that a large I-1 can use a 13D (due to the IBC
exception) so a smaller I-1 that has been assigned a less demanding
occupancy classification is quacking like the same duck regarding
needed level of protection. Since it is not stated that way in the
IBC, one has to discuss equivalencies with the AHJ.
Roland
On Aug 13, 2010, at 10:55 AM, David Blackwell wrote:
In the IBC, I-1 devolves to R-4 for 6 to 16 persons, AND further
devolves to R-3 or IRC for 5 or less. As seen in the I-1 occupancy
defined in Chapter 3.
On a related note, the 2009 IBC in Section 419 defines a new term:
live/work units. The exception to R101.2 in the 2009 IRC Scope
makes it
clear that when the live/work units are built to the IRC, they still
must use NFPA 13D, not the new IRC Section P2904 method.
David W. S. Blackwell, II, PE, CFI-I, CFPE
Engineering
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