WORKING LOAD LIMITS - SLING (IWRC)
WORK LOAD LIMITS OF SWR SLINGS USING 6 x 36/IWRC (1960mpa) Compiled in compliance with SANS7531 : 1987 AND iso 7531 : 1987 & DMR 18(10)(c)(iii) of 2015
1 LEG
2 LEGS
3 / 4 LEGS
NOMINAL BREAK FORCE
ROPE ø
ENDLESS CHOKE
STD. SIZE SOFT EYE
0 0
CHOKE HALSHING BASKET
60 0
90 0
120 0
REEVING 60 0
90 0
120 0
(mm)
(kN)
(t)
(t)
(t)
(t)
(t)
(t)
(t)
(t)
(t)
(t)
(t)
(t)
(mm)
44.7
0.67
0.89
1.25
1.55
0.63
0.60
0.83
1.01
0.84
0.89
0.45
8
0.60
160
56.5
0.85
1.13
1.58
1.96
0.80
0.75
1.05
1.28
1.06
1.13
0.57
9
0.75
160
69.8
1.05
1.40
1.95
2.42
0.99
0.93
1.30
1.58
1.31
1.40
0.70
10
0.93
200
84.4
1.27
1.69
2.36
2.93
1.19
1.13
1.58
1.91
1.59
1.69
0.84
11
1.13
200
100
1.50
2.00
2.80
3.47
1.41
1.33
1.87
2.27
1.88
2.00
1.00
12
1.33
200
118
1.77
2.36
3.30
4.09
1.67
1.57
2.20
2.67
2.22
2.36
1.18
13
1.57
260
2.06
2.74
3.84
4.75
1.94
1.83
2.56
3.11
2.58
2.74
1.37
14
1.83
260
137
2.36
3.14
4.40
5.44
2.22
2.09
2.93
3.56
2.95
3.14
1.57
15
2.09
260
157
2.69
3.58
5.01
6.21
2.53
2.39
3.34
4.06
3.37
3.58
1.79
16
2.39
260
179
3.03
4.04
5.66
7.00
2.85
2.69
3.77
4.58
3.80
4.04
2.02
17
2.69
300
202
3.39
4.52
6.33
7.83
3.19
3.01
4.22
5.12
4.25
4.52
2.26
18
3.01
300
226
3.78
5.04
7.06
8.74
3.56
3.36
4.70
5.71
4.74
5.04
2.52
19
3.36
300
252
4.19
5.58
7.81
9.67
3.94
3.72
5.21
6.32
5.25
5.58
2.79
20
3.72
300
279
4.62
6.16
8.62
10.68
4.35
4.11
5.75
6.98
5.79
6.16
3.08
21
4.11
300
308
5.07
6.76
9.46
11.72
4.78
4.51
6.31
7.66
6.35
6.76
3.38
22
4.51
300
338
6.03
8.04
11.26
13.94
5.68
5.36
7.50
9.11
7.56
8.04
4.02
24
5.36
360
402
7.08
9.44
13.22
16.36
6.67
6.29
8.81
10.70
8.87
9.44
4.72
26
6.29
360
472
8.21
10.94
15.32
18.96
7.73
7.29
10.21
12.40
10.28
10.94
5.47
28
7.29
400
547
9.42
12.56
17.58
21.77
8.88
8.37
11.72
14.23
11.81
12.56
6.28
30
8.37
400
628
10.73
14.30
20.02
24.79
10.11
9.53
13.35
16.21
13.44
14.30
7.15
32
9.53
460
715
12.11
16.14
22.60
27.98
11.41
10.76
15.06
18.29
15.17
16.14
8.07
34
10.76
460
807
13.56
18.08
25.31
31.34
12.78
12.05
16.87
20.49
17.00
18.08
9.04
36
12.05
500
904
16.74
22.32
31.25
38.69
15.77
14.88
20.83
25.30
20.98
22.32
11.16
40
14.88
600
1116
20.27
27.02
37.83
46.83
19.09
18.01
25.22
30.62
25.40
27.02
13.51
44
18.01
700
1351
24.12
32.16
45.02
55.74
22.73
21.44
30.02
36.45
30.23
32.16
16.08
48
21.44
800
1608
28.31
37.74
52.84
65.42
26.67
25.16
35.22
42.77
35.48
37.74
18.87
52
25.16
1000
1887
32.82
43.76
61.26
75.85
30.92
29.17
40.84
49.59
41.13
43.76
21.88
56
29.17
1100
2188
37.68
50.24
70.34
87.08
35.50
33.49
46.89
56.94
47.23
50.24
25.12
60
33.49
1200
2512
LOAD FACTOR
-
-
1.00
0.75
1.50
1.41
1.70
1.40
1.00
1.06
2.60
2.10
1.50
1.50
-
ENDLESS
CHOKE
BASKET
HALSHING
REEVING
Factor of Safety 6:1 Factor of Safety (Endless Choke) 8:1
For SWR slings 6 x 36 FC c/w ferrule secured eye termination made to SANS7531 : 1987 speci fi cations “Uniform load” method calculation is used throughout. A termination ef fi ciency of 90% is assumed.
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