California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 6 - Elevator Safety Orders
Group II - Elevator Installations for Which the Installation Contract Was Signed Before October 25, 1998
Article 12.3 - Special Purpose Personnel Elevators
Section 3085.11 - Car Guide Rails and Guide Rail Fastenings [Rule 1502.1]

(a) Guide rails and guide rail fastenings shall be of steel. [1502.1a]

EXCEPTION to Subsection 3085.11(a): Where steel may present a hazard, as in chemical or explosive atmospheres, guide rails may be of selected wood or other suitable non-ferrous materials.

(b) Guide rails shall be securely fastened, shall not deflect more than 1/4 in. (6 mm) under normal operation and shall have their joints well fitted and strongly secured. Guide rails, and their joints and fastenings shall withstand, without failure, the application of the car safety when stopping the car with its rated load. [1502.1b]

(c) Guide rails shall extend from the bottom of the hoistway to a sufficient height above the top landing to prevent the guide shoes from running off the rails when the car or counterweight is at its extreme upper position. [1502.1c]

(d) For rack and pinion elevators adequate provisions shall be made to prevent an ascending car from running off the guides and mast to prevent disengagement of the safety pinion from the rack where a rack and pinion car holding safety is used.

(Title 24, Part 7, Section 7-3085.11)