Ariz. Admin. Code § R11-1-1107 - Safety Factors for Friction Hoist Ropes, Tail Ropes, and Guide and Rubbing Ropes
A. Hoisting
rope installed on a friction hoist shall have a factor of safety of not less
than that determined from the following formula: F. of S. = 8.0 - .0005d, where
"d" is the maximum length of rope suspended below the head sheave in
feet.
B. For friction hoists, the
factor of safety in the hoisting ropes shall be not less than 5.5 for any depth
of shaft when the ropes are installed.
C. The factor of safety of tail ropes shall
be not less than 7 when installed.
D. The factor of safety of guide and rubbing
ropes shall be not less than 5 when installed.
Notes
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.