Basements shall not be deemed habitable unless
all of the following conditions shall be met: Such room shall be at
least seven feet six inches in height in every part from the finished
floor to the ceiling. Ceilings of such rooms shall be at least three
feet six inches above the surface of the street, alley, yard or court
adjoining the same. There shall be appurtenant to such room if used
for sleeping purposes the use of a water closet. Every room shall
have a window or windows opening upon the street, an alley or upon
a yard or court. The total area of windows in every room shall be
at least one-eighth (1/8) of the floor area of the room, and the sash
shall be made to open the full width, and the top of each window shall
be within six inches of the ceiling. All exterior walls surrounding
such room shall be dampproof. The floor of such room shall be dampproof
and waterproof.
Public space shall have a minimum height of
seven feet six inches measured from finished floor to finished ceiling.
Nonhabitable space, except crawl spaces and
attics, in multiple dwellings shall have a minimum height of seven
feet measured from floor to ceiling.
One- and two-family dwellings exceeding three
stories in height shall have exits from every story which shall provide
safe continuous passage to a legal open space and which shall comply
with one of the following requirements:
A. One interior stairway enclosed in a fire separation
having a fire resistance rating of at least one hour. All openings
in such enclosures shall be provided with a self-closing opening protective
as set forth in the following table:
|
Opening Protectives For Interior wall
Openings
|
---|
|
Fire-resistance rating of wall separation
in which opening occurs, in hours
|
Fire-resistance rating of opening protective,
in hours
|
---|
|
2 or more
|
1 1/2
|
|
1 or 3/4
|
1
|
B. Two interior stairways with all doors opening upon
such stairways equipped with a self-closing device.
C. One interior stairway with all doors opening upon
such stairway equipped with a self-closing device and one exterior
stairway or fire escape providing exit from each dwelling unit on
any story.
D. One interior stairway equipped with an automatic sprinkler
system, with all doors opening upon such stairway equipped with a
self-closing device.