We are moving into a second floor with one exit. The room is 42'x30'
and will hold 25 people in the state of NY. There are no water
sprinklers. There are 2 windows five feet off the floor 3'wide x
18''tall that do not open and do not have a platform on the
otherside(drop to first floor).
If I read SBC 1004.2.2 correctly, I think it says all floors need 2
exits when occupied with 1-500 people. Is that right? Is there more?
The State of New York uses the 2000 IRC for residential construction (w/2001
supplement) and the 2000 IBC (w/2001 supplement) for commercial.
If this is a dwelling, you only need one exit no matter how large it is. If
it is a commercial property, then it would based on the occupancy. For a
Group B (business) occupancy, the amount of persons you need to design for
is based on the floor area divided by 100 sq.ft per person. Therefore: 42 x
30 = 1260 / 100 = 12.6 = 13 persons.
For a business occupancy, Table 1018.1 requires two exits; however, if the
building has only a single story below grade (basement), or the building is
designed as Group R3 (apartment or condo with no more than two dwelling
units) then you could use Table 1018.2. Section 1018.2 allows one exit when
the use is for R3 (apartment or similar); or for business: 2 stories max.
and no more than 75 ft travel distance, only one exit is required for 30
persons or less. Most likely, one exit is OK for your needs.
FYI, The SBC (Southern Building Code) is an obsolete code, and is no longer
being referenced by any jurisdiction anywhere in the country.
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