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Select the sling having
the most suitable characteristics
for the type of load,hitch
and environment. |
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Determine that the weight of the load is within the work load limit of the sling.Consideration should be given to the angle of lift,(sling - to- load angle)which affects the work load limit of the sling.Diameters of pin and load contact edges also may affect the work load limit of the sling. |
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The sling should be rigged in a manner that provides proper load control.It is dangerous to use only one sling to lift a load which tends to shift and slide out.Be sure that the lifting device is directly over the center of gravity.If this is difficult to determine, it must be discovered by cautious experimentation.Raise the load carefully.If the load is unbalanced, lower and correct the position of the slings until the balancepoint is achieved. |
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There should not be uneven load weight distribution imposes disproportionate loading on the individual sling legs. |
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Slings must be long enough so that the work load limit is adequate after the sling -to load angle is taken into account.Inadequate consideration has caused "under -rated" slings to fall. |
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The sling user is responsible for load control.Slings must be rigged in a manner that provides for control of the load.Balancing the load in a basket hitch and supporting the load from the sides above the center of the gravity is critical.Use more than once sling to balance the load. |
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The lifting mechanism must be positioned directly over the center of gravity before the load is lifted.If this is not done,the load will "change out", and the center of gravity will end up under the lifting fixture.The center of gravity must be addressed and determined through careful experimentation or Calculation. |
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Sling eyes should be of sufficient length to slip easily over the lifting hook.This reduces the stress on the stiching at the base of the sling eye. |
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Slings used in a hoker hitch must be of adequate length for the choke action to occur on the sling body. The choke action should not occur on the fitting or eye ,at the base of the fitting or eye on the load carrying splice or the sling tag.Synthetic products stretched when the load is applied.Stretchin can be reduced by using slings with larger work load limits or selecting a low elongation,high performance fibre slings. |
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For tighter choke hitch ,take a full wrap around the load before choking the sling.Make sure that the sling do not cross.When the load is "wrapped" the sling work load limits do not increased ,but load control does. |
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If practical,take a full wrap around the load to grip it firmly;be sure that the slings do not cross each other.Wrapping the load is a legitimate method of minimizing the excessive sling length.Other method, such as , twisting and knotting radically reduce the sling work load limits.When the load is "wrapped" the sling work load limit is not increased ,but load control is. |
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Always use a choker hitch when turning the load.If the sling is not rigged properly,the turning action will loosened the hitch resulting in a load slippage.Basket hitch should not be used to turn a load. |
