R 408.15226
R 408.15226 Cable, wire rope, and wire rope slings.
Cite as Mich. Admin. Code R 408.15226
Rule 5226. (1) Cable, wire rope, and wire rope slings shall have a designed safety
factor of not less than 5.
(2) Wire rope and cable in load-carrying or hoist service and their fittings shall be
visually inspected when installed and once each day thereafter when in use.
(3) Wire rope shall not be used if, within a segment of 8 diameters in length, 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 defects.
(4) Wire rope and cable removed from service due to defects shall be plainly marked
or identified as being unfit for further use on a crane, hoist, or other load-carrying device.
(5) When U-type cable clips are applied, the U-type cable clips shall comply with
figure 1.
(6) Cable clips shall be spaced approximately 6 rope diameters apart.
(7) Wire rope and cable shall be protected at sharp or tight bends by use of corner
irons or blocks.
(8) A safety hook shall be used where there is a hazard created if the tension on the
hook can be relieved by fouling or catching.
(9) Installation, inspection, maintenance, repair, and testing of ropes, cables, and
slings shall be done only by persons qualified to do such work.
(10) Proper storage shall be provided for a sling while not in use.
(11) Connections, fittings, fastenings, and other parts used in connection with ropes
and cables shall be of good quality and of proper size and strength and shall be installed
in accordance with the manufacturer's recommendations.
(12) Hooks, shackles, rings, pad eyes, and other fittings that show excessive wear or
that have been bent, twisted, or otherwise damaged shall be removed from service.
(13) Running lines of hoisting equipment located within 6 feet 6 inches of the
ground or working level shall be boxed off or otherwise guarded or the operating area
shall be restricted.
(14) There shall be not less than 2 full wraps of hoisting cable from slipping off.
(15) A drum shall have a flange at each end to prevent the cable from slipping off.
(16) A bottom sheave shall be protected by a close-fitting guard to prevent the cable
from jumping the sheave.
(17) The reeving of a rope shall be so arranged as to minimize the chafing or
abrading while in use.
(18) Multiple-part lines shall not be twisted around each other. If there is a slack
rope condition, the rope shall be properly seated on the drum and in the sheaves.
(19) Knots shall not be allowed in a wire rope.
(20) Figure 1 reads as follows:
FIGURE 1
NOTE: There is only 1 correct method of installing wire rope clips. Wire rope clips
should be attached to rope ends as shown in photograph above. The base of each clip
should bear against the live, or long rope end, and the U-bolt should bear against the
dead or short rope end.
NUMBER AND SPACING OF CLIPS
FOR ROPES OF VARIOUS SIZES
Diameter
of
rope (in.)
Number of clips
Center-to-center
space between clips
(in.)
Length of rope
turned
back
exclusive
of
eye
(in.)
1/4
2
1 1/2
3
5/16
2
1 7/8
4
3/8
2
2 1/4
5
7/16
2
2 5/8
6
1/2
3
3
9
5/8
3
3 3/4
12
3/4
4
4 1/2
18
7/8
4
5 1/4
21
1
4
6
24
1 1/8
5
6 3/4
34
1 1/4
5
7 1/2
38
1 3/8
6
8 1/4
50
1 1/2
6
9
54
1 5/8
6
9 3/4
60
1 3/4
7
10 1/2
74
1 7/8
8
11 1/4
90
2
8
12
96
2 1/8
8
13
104
2 1/4
8
14
112