🔗 Sling Angle Visualizer

Understanding how sling angles affect load forces

Understanding Sling Angles
Why Angle Matters

As sling angle decreases (more horizontal), tension increases dramatically. This can exceed the Safe Working Load (SWL).

T = L ÷ (2 × sin(θ))

T=Tension, L=Load, θ=Angle from vertical

✅ Recommended
  • Optimal: 45-60° from vertical
  • Acceptable: 30-75°
  • Best efficiency: 60°
⚠️ Critical Warning

Never use angles less than 30° from vertical. Tension forces can exceed 2× the load weight!

Common Scenarios
  • 60°: 1.15× (58% per leg)
  • 45°: 1.41× (71% per leg)
  • 30°: 2.0× (100% per leg)
📊 3D VISUALIZATION
Drag to rotate
Controls & Results
Sling Angle (from vertical) 60°
15° 85°
Load Weight 1000 kg
Tension per Leg
577kg
Total Tension
1154kg
Force Multiplier
1.15×
Safety Status
GOOD
🟢 SAFE RANGE
Live Parameters
  • • Horizontal spread: 0m
  • • Vertical drop: 0m
  • • Sling length: 0m
Industry Standards
  • ASME B30.9 (Slings)
  • OSHA 1926.251 (Rigging)
  • 5:1 Safety Factor minimum