Sling Stress

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Sling Stress

LC-01
ASPCSPFoundational
Formula
Stress = Load ÷ (No. of slings × sin A)
When to Use

Determine tension in each sling leg when lifting a load. Critical for rigging safety.

Symbol Legend
SymbolMeaningUnitNote
StressForce on each sling leglb or N
LoadTotal weight of loadlb or N
No. of slingsNumber of sling legs
AAngle of sling from horizontaldegrees15°=2x load; 30°=load; 45°=70%; 60°=58%; 90°=50%
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