N.Y. Labor Law § 264: Fireproof building

§ 264. Fireproof building. "Fireproof building" means a building

conforming to the following requirements:

1. All exterior walls shall be constructed of brick, or stone, or

concrete, or cinder block, or concrete block, or tile, or terra cotta or

such other material as shall be specified in the rules of the board. The

board shall determine and specify in its rules such requirements as it

deems necessary for the construction of exterior walls.

2. All floors and roofs shall be built of brick, or cinder block, or

concrete block, or tile, or terra cotta, or reinforced concrete

supported by steel or reinforced concrete beams and girders. The board

shall determine and specify in its rules such other materials, the

manner of construction of floors and roofs and such other requirements

as may be deemed necessary to carry into effect the intent of this

chapter.

3. All structural metal shall be encased in fireproof material, of

such thickness as shall be specified in the rules of the board.

4. All vertical openings leading from one floor to another, except one

created by a mezzanine floor, shall be enclosed by fireproof or

fire-resisting materials in a manner conforming to rules adopted by the

board.

5. All stairways, landings, hallways, floor surfaces, furring,

ceilings, partitions, sash, trim, window frames, doors and other

interior finish, shall be constructed of incombustible material; but

nothing in this section shall prevent the use of such combustible

materials as the board shall determine and specify in its rules. Such

rules shall also specify the circumstances or conditions under which

combustible flooring, trim, acoustical material, insulating material or

other interior finish may be used or applied to floors, walls,

partitions or ceilings of fireproof buildings.

6. All windows shall be fire windows except:

a. In buildings less than seventy feet in height erected after October

first, nineteen hundred and thirteen, where the windows are located more

than thirty feet from another building or open on a court or space more

than thirty feet wide;

b. In buildings less than one hundred and fifty feet in height erected

before October first, nineteen hundred and thirteen, where the windows

are located more than thirty feet from another building.

c. Fire windows may be provided with plate glass not less than

one-fourth of an inch in thickness, no light of which shall exceed seven

hundred and twenty square inches in area.

(1) If the windows are located more than thirty feet horizontally or

fifty feet vertically from the nearest opening in the wall of another

building.

(2) If the windows are located more than fifty feet in a vertical

direction above the roof of a building within a horizontal distance of

thirty feet of the wall in which the said windows are located.

7. Partitions. All partitions in the interior of fireproof buildings

shall be of incombustible material. Nothing in this section shall

prevent the use, in a building equipped with automatic sprinklers, of

subdividing partitions of wood, or of wood and glass, in spaces used

solely for office or show-room purposes, provided, however, that where

such spaces are contiguous to any room or rooms in which manufacturing

is carried on, such spaces shall be separated from such room or rooms by

a dividing partition which, including doors, is constructed of

incombustible material.