Section R. 408.40834 - Wire ropesRule 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 |
Mich. Admin. Code R. 408.40834
1979 AC; 1983 AACS; 2004 AACS; 2013 AACS