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Compaction Strand Wire Rope Construction (8×K19S-IWRC)

  • DAWSON/OEM

  • 16-70mm

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Quantity:

Compaction Strand Wire Rope Construction (8×K19S-IWRC)

- Dawson Group Ltd. - China Manufacturer, Supplier, Factory

Compaction Strand Wire Rope Construction (8×K19S-IWRC) - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

Nominal Diameter Approx.Weight Nominal Tensile Strength of Rope (MPA)
1570 1670 1770 1870
Minimum Breaking Load of Rope
FC IWR/IWS FC IWR/IWS FC IWR/IWS FC IWR/IWS FC IWR/IWS
mm kg/100m KN
16
18
20
22
24
26
28
104
131
162
192
233
274
318
127
160
198
240
285
335
388
133
168
207
251
298
350
406
165
209
257
312
371
453
505
140
179
220
267
317
373
432
175
222
274
331
394
463
573
150
189
234
283
336
395
458
186
235
290
351
418
419
569
158
200
247
299
355
417
484
196
248
307
371
442
518
601
30
32
34
36
38
40
42
44
46
48
364
415
468
525
585
648
714
784
857
933
446
507
572
642
715
792
873
958
1050
1140
466
513
599
671
748
829
914
1000
1100
1190
579
659
744
834
930
1030
1140
1250
1360
1480
469
564
637
714
796
882
972
1070
1170
1270
616
701
792
887
989
1100
1210
1330
1450
1580
526
598
675
757
843
935
1030
1130
1240
1350
653
743
839
941
1050
1160
1280
1400
1540
1670
555
632
713
800
891
987
1090
1190
1310
1420
690
785
886
994
1110
1230
1350
1480
1620
1770
50
52
54
56
58
60
62
64
66
68
70
1010
1100
1180
1270
1360
1460
1560
1660
1760
1870
1980
1240
1340
1440
1550
1670
1780
1900
2030
2160
2290
2430
1300
1400
1510
1620
1740
1870
1990
2120
2260
2400
2540
1610
1740
1880
2020
2170
2320
2470
2640
2800
2980
3150
1380
1490
1610
1730
1850
1980
2120
2260
2400
2550
2700
1710
1850
2000
2150
2300
2460
2630
2800
2980
3170
3360
1460
1580
1700
1830
1960
2100
2250
2390
2540
2700
2860
1810
1960
2120
2280
2440
2610
2790
2970
3160
3360
3560
1540
1670
1800
1940
2080
2220
2370
2530
2690
2850
3020
1920
2070
2240
2400
2580
2760
2950
3140
3340
3550
3760

Note: the minimum aggregate breaking force = minimum breaking load ×1.214(FC)or1.260(IWR/IWS).
 
Wire Rope Sling Application
Hitches
1. Vertical- The Vertical, or straight, attachment is simply using a sling to connect a lifting hook or other device to a load. Full rated load of the sling may be used, but never exceeded. A tagline should be used on such a lift to prevent rotation, which can damage the sling. A wire rope sling with a hand-tucked splice can unlay and fail if the sling is allowed to rotate.
2. Choker- Choker Hitch configurations reduce the rated capacity of a sling by 20 to 25 percent. If a load is hanging free, the normal choke angle is approximately 135°. When the choke angle is less than 120°, an adjustment in the choker rated capacity must be made(see illustration below). Extreme care should be taken to determine the choke angel as accurately as possible. As indicated in the table below, the decrease in rated capacity is dramatic.

   

Hitches - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
   Choker Hitch
RATED CAPACITY ADJUSTIMENT
Choke  IWRC and Fiber Core Rope
Angle       Percent of
(Degrees)    Choker Rated Capacity
Over 120        100
  90-120          87
  60-89            74
  30-59            62
Up to 29         49

Hitches - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
Angle Adjustment
Rated capacity adjustment for slings in choker hitch when angle is less than 120°. Choke angles greater than 135° are unstable and should not be used.
 
3. Basket- Basket hitched distribute a load equally between the two legs of a sling, within limitations imposed by the angles at which legs are rigged to the load(see discussion of sling angles).
Basket Hitch
CAPACITY ADJUSTMENT
    Angle                      Percent of Single Leg
(Degrees)                          Capacity
       90                                     200
       60                                     170
       45                                     140
       30                                     100

Basket Hitch - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
Angle
A basket hitch has twice the capacity of a sling leg only if legs of sling are vertical, and only if D/d ratio is 25:1 and it is vertical. D/d>25:1 per ANSI B30.9.

 

WARNING: Do not use, or allow the use of the products in this catalogue, unless the user has read and understands the applicable instructions and product warnings. Information available upon request.

 

Reeving
Revving through connections to load increases load on connections fitting by as much as twice.
Do not reeve.

 

Reeving - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
Triple and Quad Leg Slings
Triple leg slings have 50% more capacity than double leg only if the center of gravity is in center of connection points and the legs are adjusted properly(equal share of the load)
Quad leg slings offer improved stability but do not provide increased lifting capacity.

 

Triple and Quad Leg Slings - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter

 

Center of Gravity(COG)
The location of the center of gravity to the pick points is an important consideration.

 

Center of Gravity(COG) - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
COG and Sling Loading
When lifting vertically, the load will be shared equally if the center of gravity is spaced equally between the pick points, as in the first illustration at right. If the weight of the load is 10,000 lbs., then each sling will have a load of 5,000 lbs. and each shackle and eyebolt will also have a load of 5,000 lbs.
When the center of gravity is not equally spaced between the pick points, as in the second illustration, the slings and fittings will not carry an equal share of the load. The sling connected to the pick point closest to the center of gravity will carry the greatest share of the load. Sling 2 is closest to COG. It will have the greatest share of load.
Sling 2 = 10,000 × 8  /(8+2)= 8,000
Sling 1 = 10,000 × 2 /(8+2)= 2,000

 

COG and Sling Loading - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter

 

WARNING: Do not use, or allow the use of the products in the catalogue, unless the user has read and understands the applicable instructions and product warnings. Information available upon request.

   

Sling Angle
Sling angle (also called angle of loading) is the angle measured between a horizontal plane and the sling leg or body. This angle is very important and can have a dramatic effect on the rated capacity of the sling (see illustration below) . As illustrated at right, when this angle decreases, the load on each leg increases. This principle applies whether one sling is used to pull at an angle, in a basket hitch, or for multilegged bridge slings. Sling angles of less than 30° shall not be used.

Angles and Load
Angles and Load - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter Sling Angle - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
Angles and Stress
How do you carry two buckets of water? These illustrations typify the stresses imposed on slings when the legs are attached to the load at various angles.

 

Sling Angles - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter

 

             Load Angle Factor
Sling Angle                   Load Angle
Degrees(A°)                 Factor =L/H
   90                              1.00
   60                             1.155
   50                             1.305
   45                             1.414
   30                             2.00
 LOAD ON EACH LEG OF SLING=
(Load÷2)×LOAD ANGLE FACTOR
ANSI B30.9 recommends against the use of a horizontal sling angle smaller than 30°.
Sling Angles - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter       Sling Angles - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
WARNING: Do not use, or allow the use of the products in the catalogue, unless the user has read and understands the applicable instructions and product warnings. Information available upon request.

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Factory of Compaction Strand Wire Rope Construction (8×K19S-IWRC) - Dawson Group Ltd. - China Manufacturer, Supplier, Factory
Package of Compaction Strand Wire Rope Construction (8×K19S-IWRC) - Dawson Group Ltd. - China Manufacturer, Supplier, Factory

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