![Lift Load Factor Lift Load Factor](http://cours-de-math.eu/climb-L-W.jpg)
When slings are used to lift loads, safety professionals must ensure the weight does not exceed the safe working load limit (WLL) of the sling. If the weight is too great, the sling may break and drop the load— causing property damage, serious injury, or death. This lecture explores some basic concepts used to establish working load limits. Introduction to Sling Load Tension Calcul ations. Slings (legs) used to lift the load. Since the weight of the load is 1,000 lbs. After applying the design factor of 5, we.
To calculate the load on a particular sling leg proceed as follows:. Take the total weight of the load and divide this by the number of legs supporting the load.
For example, assume a 2,000 pound load is to be supported by 2 legs of a sling. The above will give a total minimum weight on each leg of the sling of 2,000 pounds divided by 2 legs or 1,000 pounds.
Determine the load factor by observing the load factor chart below. Assume that the leg angle will be 60°. The load factor for 60° from the load factor chart is 1.154. Multiply the load factor times the minimum weight to be supported by the leg, i.e.
1,000 pounds times 1.154=1154 pounds. The rated sling capacity needed is then 2,308 (1,154x2) pounds in basket capacity to safely lift the 2,000 pound load.