California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 13 - Cranes and Other Hoisting Equipment
Article 92 - Cranes (Except Boom-Type Mobile Cranes)
Section 4903 - Runway Travel Limit Device
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) At the limits of travel of the bridges or gantry structures, bumpers or other positive travel limiting device shall be provided which will prevent bridge or gantry structures from leaving the ends of the rails. If bumpers are provided and they engage the tread of the wheel, they shall be of a height not less than the radius of the wheel.
(b) Bumpers, if used, shall have energy absorbing capacity to stop the crane when traveling at a speed of at least 40 percent of rated load speed, but the average deceleration rate shall not exceed 3 feet per second per second when traveling in either direction at 20 percent of the rated load speed and shall be so mounted that there is no direct shear on bolts.
1.
Amendment of subsection (b) filed 2-13-75; effective thirtieth day thereafter
(Register 75, No. 7).
2. Amendment of subsection (b) filed 8-29-86;
effective thirtieth day thereafter (Register 86, No.
39).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
