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COMMONWEALTH OF PENNSYLVANIA

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34 Pa. Code § 7.257. Winding drums, sheaves and rope grooves.

§ 7.257. Winding drums, sheaves and rope grooves.

 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.

Source

   The provisions of this §  7.257 amended September 23, 1977, 7 Pa.B. 2696. Immediately preceding text appears at serial page (8127).


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