(1) The enclosure shall be of wood or metal, solid or open work; if of open work, the spacing between parallel members shall be not more than one inch. In future installations the enclosure shall be solid.

(2) When wood is used the enclosure shall be not less than seven-eighths inch in thickness.

(3) Where the operating device is a hand rope and so located as to necessitate a slot in the car enclosure such slot shall be not more than 10 inches wide and not less than 24 inches from the floor.

(4) Floor tracks in future installations shall not project above the finished floor surface.

(1) The top of elevator cars shall be provided with a substantially constructed cover or grating made of not less than No. 9 U. S. gauge wire or its equivalent in strength and of a mesh that will reject a one and one-half inch diameter ball.

(2) Sections of the cover or grating may be arranged to swing upwards for handling long material, but such cover or grating shall be closed at all other times.

(3) In existing installations the part of such cover which faces the entrance to the hoistway shall be cut back eight inches from the edge of the landing threshold the full width of the car or shall be constructed with a self-closing hinged section not less than eight inches or more than 12 inches in depth.

(4) In installations hereafter, the part of such cover which faces the entrance to the hoistway shall be constructed with a self-closing hinged section 18 inches in depth, the full width of the car so arranged that it will rise when it meets any obstruction as the car descends. The front edge of such hinged section shall be flush with the front edge of the car platform.

(1) The carrying capacity of freight elevators hereafter installed shall be not less than 50 pounds per square foot of floor areas inside of car, except where floor areas exceed 100 square feet when a capacity of not less than 25 pounds per square foot for the additional area will be permitted.

(2) No elevator shall be used for carrying safes or other material of a greater weight than the normal lifting power of such elevator, unless the car is equipped with a locking device which will hold the car from descending at any landing independent of the hoistway ropes, while the safe or other material is being loaded or unloaded.

(1) The car operating device shall be placed near one of the main loading sides. (See also §§ 8-1.31 [a], 8-1.40 [b] [3].)

(2) A locking device shall be provided for hand rope controlled freight elevators that will hold the hand rope in the stop position while the car is being loaded or unloaded.