Current through Register Vol. 54, No. 50, December 14, 2024
Section 7.258 - Connecting means(a) When the carriage is connected to the driving machine by a rope, cable or chain, any one of the following connecting means may be used: (1) Steel or iron elevator wire rope.(2) Steel aircraft cable.(b) The diameter of ropes or cables shall be not less than the following: (1) 1/4 inch for elevator wire rope.(2) 1/8 inch for aircraft cable.(c) The connecting means shall have a factor of safety of not less than seven, based on the tension in the rope, cable, or chain when raising the carriage and its rated load. In no case shall the rated breaking strength of the rope, cable, or chain be less than 1,800 pounds.