TABLE IV. Strength requirements in tons (2,000 pounds) for type II, classes 1 and 2 slings.
Splice
Minimum breaking
efficiency
Diameter
RC¹ (one leg vertical pull)
Proof load
strength²
Tons,
Tons,
Tons,
Tons,
Tons,
Tons,
Percent
Inches
galvanized
galvanized
uncoated
uncoated
uncoated
galvanized
Class 1:
95.0
3/8
1.1
2.2
1.2
2.4
5.90
5.31
95.0
1/2
2.0
4.0
2.2
4.4
10.35
9.31
95.0
5/8
3.1
6.2
3.4
6.8
16.11
14.50
95.0
3/4
4.4
8.8
4.9
9.8
23.04
20.74
95.0
7/8
5.9
11.8
6.6
13.2
31.14
28.03
95.0
1
7.6
15.2
8.5
17.0
40.41
36.37
92.5
1-1/8
9.0
18.0
10.0
20.0
49.43
44.68
Class 2:
92.5
1-1/4
11.0
22.0
12.0
24.0
57.84
52.05
92.5
1-3/8
13.0
26.0
15.0
30.0
69.74
62.76
92.5
1-1/2
16.0
32.0
17.0
34.0
82.69
74.42
92.5
1-5/8
18.0
36.0
20.0
40.0
97.12
87.41
92.5
1-3/4
21.0
42.0
24.0
48.0
112.00
100.80
92.5
1-7/8
24.0
48.0
27.0
54.0
127.75
114.97
2
30.0
27.0
60.0
54.0
144.37
129.94
92.5
¹ RC Rated capacity is the maximum recommended load based on a safety factor of 5.
² Strength requirements computed on the efficiency of the eye splice and the 5 percent for testing variation.
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