Rigger how-to
How to Calculate Sling Tension at an Angle
Angles increase sling load.
Quick answer
Angles increase sling load. In short: find; count; measure, then complete the remaining steps below.
Step by step
Find load weight.
Count slings.
Measure the angle.
Use the angle factor.
Calculate tension.
Pick rated slings.
Safety reminders for riggers
- Inspect rigging before use
- Never exceed WLL
- Keep people clear
- Use tag lines
Key terms
Sling · Shackle · WLL · Sling angle · Center of gravity · Tag line: see the full rigger glossary.