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PDFWAC 296-96-24655

Sheaves and supporting members.

(1) The minimum sheave diameter shall be 40 times the diameter of the rope used. For example, a 3/8 in. rope requires a 15 in. diameter sheave.
(2) The overhead supporting members shall be designed, based upon impact loads, with a safety factor of:
(a) 9 If wood; and
(b) 5 If steel.
[Statutory Authority: Chapter 70.87 RCW. WSR 18-18-070, ยง 296-96-24655, filed 8/31/18, effective 10/1/18.]
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