50 Point Explanation
At an
angle of 30
degrees-to-the-horizontal, the two sling legs are so stressed that its
lifting capacity is cut in half. Also, remember that it is usually only
two legs of a
multi-leg (3,
4 leg, etc.) sling that carry most of the weight. Thus,
multi-leg slings can only lift
an amount equal to a single straight leg sling if the sling angles are
30 degrees. The
main advantage of a multi-leg sling is not neccessarily increased lift
capacity, but rather its ability to control the load better
than a single-leg. Just be sure you know how the sling angles affect its lifting
capacity.