Michigan Administrative Code
Department - Labor and Economic Opportunity
MIOSHA
General Industry and Construction Safety and Occupational Health Standards
Construction Safety and Health Standard
Part 8 - HANDLING AND STORAGE OF MATERIALS
Section R. 408.40834 - Wire ropes
Universal Citation: MI Admin Code R. 408.40834
Current through Vol. 24-16, September 15, 2024
Rule 834.
(1) Wire rope shall be taken out of service if any of the following conditions exist:
(a) In running ropes, 6 randomly
distributed broken wires in 1 lay or 3 broken wires in 1 strand in 1
lay.
(b) Wear of 1/3 the original
diameter of outside individual wires. Kinking, crushing, bird-caging, or any
other damage resulting in distortion of the rope structure, except for
deformation caused by normal methods of attachment to drums, hooks, shackles,
or other accessories.
(c) Evidence
of any heat damage from any cause.
(d) Reductions from nominal diameter of more
than 1/64-inch for diameters up to and including 5/16-inch, 1/32-inch for
diameters 3/8-inch to and including 1/2-inch, 3/64-inch for diameters 9/16-inch
to and including 3/4-inch, 1/16-inch for diameters 7/8-inch to 1-1/8-inches
inclusive, 3/32-inch for diameters 1-1/4 to 1-1/2 inches inclusive.
(e) In standing ropes, more than 2 broken
wires in 1 lay in sections beyond end connections or more than 1 broken wire at
an end connection.
(f) Wire rope
shall not be used if, in any length of 8 diameters, the total number of visible
broken wires exceeds 10% of the total number of wires, or if the rope shows
other signs of excessive wear, corrosion, or defect.
(2) A wire rope used for hoisting, lowering, or pulling shall consist of 1 continuous piece without a knot or splice, except an eye splice at the end of a wire rope.
(3) If wire rope clips are used to form eyes in a wire rope, table 1 shall be followed as to numbers and spacing to be used. The "u" section shall be on the dead end side.
(4) Protruding ends of strands in splices on slings and bridles shall be covered or blunted.
(5) Shock loading is prohibited.
(6) Table 1 reads as follows: TABLE 1
| NUMBER AND SPACING OF U-BOLT WIRE ROPE CLIPS | |||
| Improved plow steel, rope diameter (inches) | Number of clips | Minimum spacing (inches) | |
| Drop forged | Other material | ||
| 1/2 or less | 3 | 4 | 3 |
| 5/8 | 3 | 4 | 3-3/4 |
| 3/4 | 4 | 5 | 4-1/2 |
| 7/8 | 4 | 5 | 5-1/4 |
| 1 | 5 | 6 | 6 |
| 1-1/8 | 6 | 6 | 6-3/4 |
| 1-1/4 | 6 | 7 | 7-1/2 |
| 1-3/8 | 7 | 7 | 8-1/4 |
| 1-1/2 | 7 | 8 | 9 |
Disclaimer: These regulations may not be the most recent version. Michigan may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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