Tower Safety • Forces Are Not Hidden

Trolley / Self-Tagging Lift Simulator

Adjust load, heights, hoist distance, and tower-face offset to visualize changing line angles, self-tag force, and tower anchor reaction.

Inputs

Load Weight (lb)

Top Block Height Above Ground (ft)

Trolley / Load Height Above Ground (ft)

Load Distance From Tower Face (ft)

The farther the load moves away from the tower face, the more force increases.

Hoist / Anchor Distance From Tower Base (ft)

Friction / System Loss (%)

Equipment WLL Limit (lb)

Student Labels Resultant Vector Show Vector Math Vector-Only View

System Status: Green / within entered limits

Self-Tag Force

SAFE

Top Block Reaction

SAFE

Anchor Resultant

SAFE

Load-Line Tension

0 lb

Top Block Reaction

0 lb

Anchor Resultant

0 lb

Self-Tag Force

0 lb

Hoist Line Angle

0°

Load-Line Angle

0°

1. A trolley/self-tagging lift changes the load path. The system is lifting and pulling away from the tower face.

2. As horizontal offset increases, angle and tension increase.

3. Verify anchors, structure, equipment ratings, friction, dynamic loading, manufacturer instructions, and the job-specific rigging plan.