Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 7 - ELEVATORS, LIFTS, ESCALATORS, DUMBWAITERS, HOISTS ANDTRAMWAYS
Subchapter H - STAIRWAY INCLINED LIFTS IN BUILDINGS OTHER THAN PRIVATE RESIDENCES
Section 7.257 - Winding drums, sheaves and rope grooves
Universal Citation: 34 PA Code ยง 7.257
Current through Register Vol. 54, No. 38, September 21, 2024
Winding drums and sheaves shall be composed of cast iron or steel. The diameter of drums or sheaves shall be not less than 30 times the diameter of the wire hoist-ropes and shall have machined rope-grooves. An exception exists when eight by 19 elevator wire rope or seven by 19 aircraft cable is used as a connecting means between the carriage and the driving machine, the diameter of drums and sheaves may be reduced to 21 times the diameter of the rope or cable.
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