Outrigger Reaction Screening

Lifted-load force and overturning moment screening:

Lifted Load Mass (kg)

Rigging Mass (kg)

Operating Radius (m)

Point Load & Pressure

Pad ground bearing pressure calculations:

Outrigger Force (kN)

Width (m)

Length (m)

Pad Surface Area1.44 m²

Crane Mat Sizing

Estimate minimum contact area from leg load and soil capacity:

Outrigger Force (kN)

Allowable Soil Pressure (kPa)

Suggested Dimension1.32 m × 1.32 m

Chart Utilization

% of WLL

Current Total Load

Max Rated Load

0%90%100%130%

—enter a positive WLL

How this calculator works

Screen lifted-load moment and boom geometry, and identify the verified machine data required before any per-outrigger reaction can be used.

FormulaLifted-load moment = lifted load force × operating radius

What this assumes

Load and rigging mass are treated as a static suspended load for the moment calculation.
Boom geometry is a two-dimensional planning view.
A per-leg reaction remains blocked until supplied by the manufacturer, load chart or a competent engineer.

What it does not cover

Crane self-weight and centre of gravity
Counterweight, outrigger spread and slew-sector distribution
Dynamic, wind, travel or accidental effects

Outrigger Reaction Screening

Lifted-load force and overturning moment screening:

Lifted Load Mass (kg)

Rigging Mass (kg)

Operating Radius (m)

Point Load & Pressure

Pad ground bearing pressure calculations:

Outrigger Force (kN)

Width (m)

Length (m)

Pad Surface Area1.44 m²

Crane Mat Sizing

Estimate minimum contact area from leg load and soil capacity:

Outrigger Force (kN)

Allowable Soil Pressure (kPa)

Suggested Dimension1.32 m × 1.32 m

Chart Utilization

% of WLL

Current Total Load

Max Rated Load

0%90%100%130%

—enter a positive WLL

Outrigger Reaction Calculator

Outrigger Reaction Screening

Point Load & Pressure

Crane Mat Sizing

Chart Utilization

How this calculator works

What this assumes

What it does not cover

Outrigger Reaction Calculator

Outrigger Reaction Screening

Point Load & Pressure

Crane Mat Sizing

Chart Utilization

How this calculator works

What this assumes

What it does not cover

Outrigger Reaction Calculator

Outrigger Reaction Screening

Point Load & Pressure

Crane Mat Sizing

Chart Utilization

How this calculator works

What this assumes

What it does not cover

Other free calculators

Ground Bearing Pressure

Crane Mat Size

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Outrigger Reaction Calculator

Outrigger Reaction Screening

Point Load & Pressure

Crane Mat Sizing

Chart Utilization

How this calculator works

What this assumes

What it does not cover

Other free calculators

Ground Bearing Pressure

Crane Mat Size

Sling Angle Load