N.Y. Multiple Dwelling Law § 144: Egress from dwellings

§ 144. Egress from dwellings. 1. A dwelling three or more stories in

height shall have at least two means of egress extending 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 one

hundred forty-eight. The other means of egress shall be either another

such stair or a fire-escape constructed as provided in section

fifty-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 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, or

fire-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 are everywhere

four feet six inchs 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 a stair within fifty feet from

a means of egress from such apartment. For such dwellings erected under

plans filed in the department after September first, nineteen hundred

fifty-one, such stair shall also be enclosed and comply with the

provisions of section one hundred forty-eight.

4. Whenever more than two stairs are required, one or more of such

stairs may be fire-stairs or fire-towers, provided that there shall

never be more than one such fire-stair or fire-tower for each two other

required stairs.