Ground Rigging Training

Math training and calculation workspace for ground rigging fundamentals

Scenario Builder

Load Weight (lbs)

D1 (ft)

D2 (ft)

Height (ft)

Sling S1 (ft)

Sling S2 (ft)

Calculation Output

Vertical Share 1

5000 lbs

Vertical Share 2

5000 lbs

Tension Leg 1

5896 lbs

Tension Leg 2

5896 lbs

LAF 1

1.179

Angle: 58.0°

LAF 2

1.179

Angle: 58.0°

Geometry Visualization

Formula Reference

Vertical Share (Equal CG)

VS = Load / NumberOfLegs

Vertical Share (Unequal CG)

VS1 = Load × (D2 / (D1 + D2))VS2 = Load × (D1 / (D1 + D2))

Load Angle Factor

LAF = SlingLength / Height

Sling Tension

Tension = VerticalShare × LAF

Angle Factor Table

90° = 1.000

60° = 1.155

50° = 1.305

45° = 1.414

30° = 2.000

This page is designed to help you pass the IATSE Local 720 ground rigging course. Created by a member, but not in any way endorsed by Local 720.