Max Wheel Load Calculator

Calculate maximum static and dynamic wheel loads for runway design.

1. Crane Configuration

meters

meters

meters (Support to Hook Center)

2. Weights & Loads

kg

kg (Total)

kg

kg

3. Dynamic Factors

% (10-25% typical)

%

Analysis Result

MAX WHEEL LOAD

Max Static Load: 0 kg
Max Dynamic Load: 0 kg
*Includes Vertical Impact Factor
Total Live Load: 0 kg
Bridge Load/Wheel: 0 kg
Min Wheel Load (Unloaded): 0 kg
Position Factor: 0.00
Analysis based on worst-case trolley position (Extreme End).

Standard Impact Factors (FEM 1.001)

Duty Class Impact Factor Application
M1 - M3 1.10 (+10%) Maintenance / Light
M4 - M5 1.20 (+20%) Warehouse / Heavy
M6 - M7 1.30 (+30%) Steel Mill / Severe
M8 1.40 (+40%) Continuous / Critical

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Understanding Wheel Load Calculations

Calculating wheel loads is a fundamental step in designing the structural support system for an EOT crane, including the runway beams (gantry girders), columns, and building foundations.

Vertical Loads (Static)

  • Safe Working Load (SWL): The maximum rated capacity of the crane.
  • Dead Weights: Includes the weight of the bridge girder(s), the trolley/hoist, and the hook block assembly.
  • Positioning: The maximum wheel load occurs when the trolley (carrying the full SWL) is at its extreme "Hook Approach" position, closest to one end of the bridge. This creates an unbalanced load distribution that concentrates weight on one side.

Dynamic Factors

  • Vertical Impact: Lifting a load suddenly or traveling over rail joints creates dynamic forces. This calculator uses FEM 1.001 guidelines to apply an impact factor (typically 10% to 25%) to the live load.
  • Lateral Load (Surge): Horizontal forces perpendicular to the rails caused by the acceleration or braking of the trolley.
  • Longitudinal Load (Tractive): Forces caused by the acceleration or braking of the entire crane along the runway.

Results Explained

  • Max Dynamic Wheel Load: This is the "worst-case" force a single wheel will exert on the rail. Structural engineers use this value to design the runway beams.
  • Min Wheel Load: Calculated with the trolley at the opposite end and no lifted load. This is used to check for wheel slippage during travel and potential uplift on the runway structure.