TABLE II. Strength requirements in tons (2,000 pounds) for type I, classes 1 and 2 slings.
Splice
RC¹ (one leg vertical
Minimum breaking
efficiency
Diameter
Proof load
pull)
strength²
Tons,
Tons,
Tons,
Tons,
Tons,
Tons,
Percent
Inches
galvanized
uncoated
galvanized
uncoated
uncoated
galvanized
Class 1:
88
3/8
1.98
1.1
0.99
2.2
4.96
4.47
86
1/2
3.20
1.8
1.60
3.6
8.51
7.66
84
5/8
5.00
2.8
5.6
12.97
2.50
11.65
82
3/4
7.00
3.9
7.8
18.05
3.50
16.23
80
7/8
9.20
5.1
10.2
23.83
4.60
21.45
80
1
12.00
6.7
13.4
30.93
6.00
27.84
80
1-1/8
15.20
8.4
16.8
38.92
7.60
35.03
Class 2:
80
1-1/4
17.60
9.8
19.6
45.51
8.80
40.96
80
1-3/8
22.00
12.0
24.0
54.83
11.00
49.36
80
1-1/2
26.00
14.0
28.0
65.05
13.00
58.54
80
1-5/8
28.00
16.0
32.0
76.20
14.00
68.58
80
1-3/4
34.00
19.0
38.0
88.06
17.00
79.18
80
1-7/8
40.00
22.0
44.0
100.65
20.00
90.58
2
25.0
22.00
50.0
44.00
113.95
102.86
80
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 7-1/2 percent for testing variation.
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