Roundsling Committee Report

By Greg Babinchak, Chair

As most WSTDA members are aware, two new versions of the Roundsling Operating & Inspection Manual are available. This includes a new pocket sized version. This is sized, as its name implies, small enough to fit into shirt pockets or the like. I’d note the dimensions here, but it is so darn small that I already lost my copy of the thing. I guarantee you’ll love your copy. I loved mine. Most importantly, this valuable tool conveys recommended operating practices, including information about recommended rigging hitches. This latest revision now includes information about the proper sizing of hardware when they are being attached to roundslings. Many users are just starting to become aware that it is often not appropriate, for example, to connect the smallest sized shackle of equivalent capacity to the roundsling for use in loading the sling to its’ full rated load capacity.

During the latest meetings, the committee shed light on its’ intention to proceed with a test program that is directed toward developing an understanding of the effects that contacting edges have on roundsling strength. It is common knowledge that roundslings may become cut and can completely separate during use if they are allowed to come into direct contact with sharp edges during use. Arguments have been made as to what constitutes a sharp edge. This has in turn led to the general removal of the word “sharp” from most literature. Well, with the assistance of the testing committee, we are hopeful for the completion of the testing for this program by years end. The test equipment and fixtures have been manufactured, and the testing protocol is now being finalized. We fully expect that information gathered from this testing will aid the committee in generating simple recommendations as to what edge radii are appropriate for direct contact with polyester roundslings before some form of protection becomes necessary.

During the next meeting, some aspects of sling protection will be discussed. Also, in 2006, the roundsling committee will start reviewing the updating of Standard Specification for Polyester Roundslings, which was last revised in 2001.

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