Materials for car enclosures and car enclosure linings shall be metal or wood.
Personnel hoist cars shall be permanently enclosed on the top and on all sides except the entrance and exit.
The enclosure shall be securely fastened to the car platform and so supported that it cannot loosen or become displaced in ordinary service, on the application of the car safety, or on buffer engagement.
The enclosure walls shall be of such strength and so designed and supported that, when subjected to a pressure of 100 pounds applied horizontally on any 4 square-inch area of the walls of the enclosure, the deflection will not reduce the running clearance below 3/4 inch.
Cars shall have not more than one compartment.
An emergency exit with a cover shall be provided in the top of all cars and shall conform to the following requirements:
Tops of car enclosures shall be so designed and installed as to be capable of sustaining a load of 300 pounds on any square area 2 feet on a side and 100 pounds applied at any point. Simultaneous application of these loads is not required.
A working platform or equipment which is not required for the operation of the hoist or its appliances, except where specifically provided in this Standard, shall not be located on the top of a hoist car.
Wire glass or the equivalent shall be used for vision panels. Plain glass may be used only for car operating appliances.
Cal. Code Regs. Tit. 8, § 1604.17