Synthetic Chain Wire Rope RIGGING SLING ANGLES 3

Synthetic Chain Wire Rope RIGGING & SLING ANGLES

3 basic sling hitches Basket – Highest working load limit Vertical – 5 o % of the Basket working load limit Choker – Maximum of 80 % of the Vertical working load limit

Basket Hitch

Vertical Hitch

Choker Hitch

Basket Sling to Load Angle The horizontal angle formed between the sling leg and the “top” of the load.

Illustrated right - Increased tension is magnified by any change from vertical to horizontal lifting. Increased tension is imposed on the sling leg(s) when the legs are used at angles less than 90°.

Basket Sling Angle VS Load per Leg

Sample Basket Hitches

Choker Sling Angle Reduction Choker Hitch Angle Reduction Chart Choker Hitch Angle Reduction Factor Over 1200 1. 00 90 -1200 0. 87 60 -890 0. 74 30 -590 0. 62 0 -290 0. 49

Sample Choker Hitches

Center of Gravity For best control, attach the slings above the CG. When this is not possible keep the CG contained with three or four sling legs or use basket or choker hitches with wraps. These measures may not guarantee load control. The user must be assured, based upon the specific application that selected methods are suitable and comply with all applicable standards and regulations.

SLING TENSION - PROPORTIONAL SHARE OF THE LOAD

SLING TENSION - DIFFERENT HORIZONTAL PLANES