Home▸Engineering & Materials▸Crane Load Radius & Tipping Moment Lab

🏗️ Crane Load Radius & Tipping Moment Lab

A 3D mobile crane whose rated capacity falls as its boom swings out to greater radius — balance load, counterweight, and boom geometry against the tipping line without ever exceeding the safe moment.

Engineering & Materials3DAdvanced60 FPS

🔬 What It Demonstrates

Load moment (weight × radius) must stay below the resisting moment supplied by the counterweight and base, or the crane rotates about its tipping line — the same statics that govern every real crane's load chart.

🎮 How to Use

Adjust load mass, boom angle, boom length, and counterweight. Watch the radius, load moment, resisting moment, and margin update live, and see the crane visibly lean once the tipping line is crossed.

💡 Did You Know?

Most real crane tip-overs happen not because a load was absurdly heavy, but because the operator exceeded the charted capacity for that specific radius — the same "moment budget" this simulation makes visible.

⚙ Under the hood

3D SimulationCrane PhysicsLoad BalancingTipping PointStructural StabilityPhysics LabThree.js

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install