N.Y. Comp. Codes R. & Regs. tit. 12, § 8-2.24 – Passenger cars.

(b) The car and car frames may be of wood or metal, or both wood and metal, and shall be strongly braced and bolted.
(c) The carrying capacity of such elevators hereafter installed shall be not less than 50 pounds for each square foot of floor area inside car.

In factory buildings erected before or after October 1, 1913; in mercantile establishments in buildings erected before or after November 1, 1920.

(a) Enclosure.

Passenger elevator cars shall be fully and substantially enclosed on all sides, including the top, except on landing sides.