Ground-Pressure Screening
Verified or indicative capacity · 20% headroom
Verified or indicative capacity · 20% headroom
Ground Bearing CalculatorCheck Your Pad's
Check Your Pad's
Applied Ground Pressure
Compare pressure beneath the pad with a verified site value or a clearly labelled screening assumption.
Use evidence first
Maximum planned outrigger reaction
Assessed bearing value at the support
Manufacturer-listed pad data
Read calculation guide →1Pad
2Load
3Ground
Which pad are you checking?
Select a CPS pad or enter custom dimensions.
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Maximum Load Per Outrigger
Use the maximum reaction for the planned crane configuration from the manufacturer, duty chart or lift plan.
Do not estimate: never divide vehicle weight by the number of outriggers.
Tonnes
Allowable Bearing Pressure
Choose where the pressure limit for this screen comes from.
Use a verified site value
Enter the allowable pressure confirmed for the actual outrigger position—not concrete cube strength.
kN/m²
Screening assumptions only. Verify the actual bearing condition on site.
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Screening only. This result is not approval of a pad or lift.
Read calculation limitations
The calculation assumes the pad's full physical area is effective. It does not assess pad bending, shear, crushing, deflection, outrigger-foot size, the supporting slab or capping beam, underground hazards or ground variability. The Appointed Person and responsible temporary-works or structural engineer must verify the complete arrangement.