1. (a) The sides of all hoistways where there are no landings shall have enclosures extending from the floor not less than 72 inches in height. (See § 8-1.14.)

2. (b) The landing sides of all hoistways shall have enclosures extending from the floor to the ceiling. (See § 8-1.14.)

   Exceptions:

3. (1) Existing freight elevator hoistways.
4. (2) Existing freight elevator hoistways provided with trap doors.
5. (c) All elevator hoistway enclosures shall be provided with doors or gates.

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