WORKING LOAD LIMITS - SLING (IWRC)
WORK LOAD LIMITS OF SWR SLINGS USING 6 x 36/IWRC (1770mpa) 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)
0.60
0.81
1.13
1.40
0.57
0.54
0.75
0.91
0.76
0.81
0.40
40.3
8
0.54
160
1.02
1.43
1.77
0.72
0.68
0.95
1.16
0.96
1.02
0.51
51
9
0.68
160
0.77
1.26
1.76
2.18
0.89
0.84
1.18
1.43
1.18
1.26
0.63
63
10
0.84
200
0.95
1.52
2.13
2.64
1.08
1.02
1.42
1.73
1.43
1.52
0.76
76.2
11
1.02
200
1.14
1.82
2.55
3.15
1.29
1.21
1.70
2.06
1.71
1.82
0.91
91
12
1.21
200
1.37
2.12
2.97
3.67
1.50
1.41
1.98
2.40
1.99
2.12
1.06
106
13
1.41
260
1.59
2.48
3.47
4.30
1.75
1.65
2.31
2.81
2.33
2.48
1.24
124
14
1.65
260
1.86
2.84
3.98
4.92
2.01
1.89
2.65
3.22
2.67
2.84
1.42
142
15
1.89
260
2.13
3.22
4.51
5.58
2.28
2.15
3.01
3.65
3.03
3.22
1.61
161
16
2.15
260
2.42
3.64
5.10
6.31
2.57
2.43
3.40
4.13
3.42
3.64
1.82
182
17
2.43
300
2.73
4.08
5.71
7.07
2.88
2.72
3.81
4.62
3.84
4.08
2.04
204
18
2.72
300
3.06
4.54
6.36
7.87
3.21
3.03
4.24
5.15
4.27
4.54
2.27
227
19
3.03
300
3.41
5.04
7.06
8.74
3.56
3.36
4.70
5.71
4.74
5.04
2.52
252
20
3.36
300
3.78
5.56
7.78
9.64
3.93
3.71
5.19
6.30
5.23
5.56
2.78
278
21
3.71
300
4.17
6.10
8.54
10.57
4.31
4.07
5.69
6.91
5.73
6.10
3.05
305
22
4.07
300
4.58
7.26
10.16
12.58
5.13
4.84
6.78
8.23
6.82
7.26
3.63
363
24
4.84
360
5.45
8.52
11.93
14.77
6.02
5.68
7.95
9.66
8.01
8.52
4.26
426
26
5.68
360
6.39
9.88
13.83
17.13
6.98
6.59
9.22
11.20
9.29
9.88
4.94
494
28
6.59
400
7.41
11.34
15.88
19.66
8.01
7.56
10.58
12.85
10.66
11.34
5.67
567
30
7.56
400
8.51
12.90
18.06
22.36
9.12
8.60
12.04
14.62
12.13
12.90
6.45
645
32
8.60
460
9.68
14.56
20.38
25.24
10.29
9.71
13.59
16.50
13.69
14.56
7.28
728
34
9.71
460
10.92
16.34
22.88
28.32
11.55
10.89
15.25
18.52
15.36
16.34
8.17
817
36
10.89
500
12.26
20.16
28.22
34.94
14.25
13.44
18.82
22.85
18.95
20.16
10.08
1008
40
13.44
600
15.12
24.40
34.16
42.29
17.24
16.27
22.77
27.65
22.94
24.40
12.20
1220
44
16.27
700
18.30
29.04
40.66
50.34
20.52
19.36
27.10
32.91
27.30
29.04
14.52
1452
48
19.36
800
21.78
34.08
47.71
59.07
24.08
22.72
31.81
38.62
32.04
34.08
17.04
1704
52
22.72
1000
25.56
39.52
55.33
68.50
27.93
26.35
36.89
44.79
37.15
39.52
19.76
1976
56
26.35
1100
29.64
45.36
63.50
78.62
32.05
30.24
42.34
51.41
42.64
45.36
22.68
2268
60
30.24
1200
34.02
51.60
72.24
89.44
36.46
34.40
48.16
58.48
48.50
51.60
25.80
2580
64
34.40
1500
38.70
61.80
86.52
107.12
43.67
41.20
57.68
70.04
58.09
61.80
30.90
3090
70
41.20
1500
46.35
69.00
96.60
119.60
48.76
46.00
64.40
78.20
64.86
69.00
34.50
3450
76
46.00
1500
51.75
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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