Tension in slings with soft top loop

This spreadsheet solves for the tension in a four leg sling set that uses a soft loop at the top instead of a metal master link. This type of sling set is frequently used when minimum sling set weight is a must. Full calculation method documentation is provided.

User inputs weight, cg location, lift point locations, and maximum pick point height. The sheet graphically displays system angles, lengths and tensions and provides the final sling set configuration. Allows the user to quickly select the required rope lengths and diameters by inputting only the bare minimum amount of information. I use this often for lightweight marine sling set design and I have had no rope failures. 

Calculation Reference

Lifting with Slings

Sling calculations

Mechanical Handling