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Crane Lift Plan Calculator — Load Chart, Sling Tension & Outrigger Bearing

How it works

Enter your lift parameters. The calculator checks three critical limits in real time: load chart capacity (ASME B30.5), sling tension (ASME B30.9), and outrigger ground bearing (OSHA 1926.1408). Verify the plan to get a scored verdict and stamped PDF.

Lift Parameters

Load & Capacity

Crane rated capacity (t) at radiusPayload weight (t)Rigging weight (t)

Sling Configuration

Sling legsSling angle from horizontal (°)Sling WLL per leg (t)

Outrigger & Ground

Crane weight (t)Outrigger reaction fractionPad/mat area per outrigger (m²)Soil bearing capacity (kPa)

Live Calculations

Total load32 t

Derated usable capacity (85%)42.5 t

Load chart utilization75%

Sling tension / leg9.24 t

Sling utilization (vs WLL)92%

Load-side outrigger reaction36 t

Point load per pad18 t

Ground bearing pressure117.7 kPa

Ground utilization (vs soil)59%