§ 254. Egress from dwellings. 1. Nursing and convalescent homes, homes
for the aged and boarding and nursery schools, two stories in height
erected after July first, nineteen hundred fifty-seven, child caring
institutions, two stories in height, erected after July first, nineteen
hundred sixty-two and all dwellings three or more stories in height
shall have at least two means of egress and, except as otherwise
provided in the case of a pitched or sloped roof, shall extend to the
roof from an entrance story, street, court or yard. The entrances to
such means of egress at every story shall be at least fifteen feet
distant from each other unless they are on opposite sides of a public
hall. One means of egress shall be a stair constructed as provided in
section two hundred fifty-seven. The other means of egress shall be
either another such stair or a fire-stair or a fire-escape constructed
as provided in section one hundred thirty-three.

2. If the number of living rooms on any story, or in any section of
any story, above the entrance story exceeds twenty, there shall be an
additional stair or a fire-stair extending from the entrance story to
the roof for each twenty rooms or fraction thereof on such story or
section thereof in excess of twenty, except that no additional stair
shall be required for such excess on any story or section thereof if the
number of living rooms thereon does not exceed thirty and if in addition
one stair serving such story or section and every entrance hall or other
public hall connected therewith is everywhere four feet six inches or
more in clear width.

3. There shall be accessible from every apartment two means of egress
from the dwelling, one of which shall be an enclosed stair complying
with the provisions of section two hundred fifty-seven within fifty feet
from a means of egress from such apartment.

4. Nursing and convalescent homes, homes for the aged, and boarding
and nursery schools, one story in height, erected after July first,
nineteen hundred fifty-seven, and child caring institutions, one story
in height, erected after July first, nineteen hundred sixty-two, shall
have at least two means of egress from the dwelling accessible to every
apartment providing free and unobstructed egress by a door opening to
the outer air.