Mich. Admin. Code R. 408.7075 - Use of winding drum machines
Rule 75. Section 22.2 of the ANSI A10.4 standard is amended to read as follows:
22.2
Winding drum machines may be used irrespective of car travel if the drums are
grooved for hoisting wire rope. Grooves shall be machine finished and shall be
of the helical or parallel type. Only 1 layer of rope may be on the
drum.
Notes
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