WEFOUNDThe Practical Working of the an Intermediate Stage Between the Prison and the Public (Classic Reprint)


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In rigging various types of hitches are used to hold loads. Safe working load limit of a sling depends on type of hitch, sling angle and D/d ratio. Information on types of hitches and effect of type of hitch, sling angle and D/d ratio on safe working load is given in this article.

Every lift uses 1 of 3 Basic Hitches shown above – Vertical, Choker and Basket. Detail about various sling configurations using them is as under.

In single vertical hitch a sling is used to connect a lifting hook or other device to a load. In this configuration the total weight of the load is carried by a single leg, the sling horizontal angle is 90º (angle between horizontal line and sling), and the weight of the load can equal the maximum working load limit of the sling. This hitch provides absolutely no control over the load because it permits rotation. A tagline should be attached to prevent rotation which may damage the sling.

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