Steel Crane Mat Calculator & Sizing Tool
Find the right steel crane mat for your crane. Look up the manufacturer max outrigger force for your model, or run a custom calculation using your load case and site ground bearing pressure.
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01
Select Your Crane
Choose the manufacturer and model.
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02
Pick a Load Case
Size to manufacturer max or a 70–85% working load.
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03
Add Ground Pressure
Optional PSF for your site’s soil conditions.
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04
Get Your Mat
See the recommended mat and add it to your quote.
Results are for planning purposes only and must be verified by qualified personnel prior to field use.
Understanding Crane Mat Sizing
Crane mat sizing depends on how outrigger reaction forces are transferred into the ground and how much pressure the soil can safely support.
What is PSF?
PSF (pounds per square foot) is the allowable soil bearing pressure. Lower PSF typically requires larger crane mats to safely distribute load.
Outrigger Output
Outrigger load is the reaction force applied at each crane outrigger during lifting operations. The manufacturer maximum jack reaction force represents the maximum force that can be exerted on the outriggers.
Why Mats Are Required
Crane mats distribute heavy loads over a larger area, reducing ground pressure and providing a stable, level base for safe lifting.
Crane Mat Lookup Table
This table provides recommended outrigger mats based on the crane manufacturer’s maximum published jack reaction force. For custom load cases, ground bearing pressure, and detailed mat sizing, use the Crane Mat Calculator below.
How Steel Crane Mat Requirements Are Calculated
Steel crane mat sizing is calculated using manufacturer maximum outrigger reaction forces, adjusted using a selected design utilization factor, and divided by allowable soil bearing capacity (PSF).
Operating Load Adjustment
The selected load case (e.g., 70–85%) applies a design utilization factor to the manufacturer maximum outrigger reaction force to determine the allowable working load.
Soil Bearing Calculation
The outrigger reaction force is divided by allowable PSF to determine the minimum surface area required for safe load distribution.
Mat Selection Logic
The tool selects the smallest steel crane mat configuration that meets or exceeds the required area and the manufacturer max. reaction force for each scenario.
Calculation Summary
Allowable Load = Manufacturer Max × Utilization Factor
Required Area = Allowable Load ÷ PSF
Steel Crane Mat Calculator
Use our crane mat calculator to estimate required steel mat sizing based on manufacturer, crane model, and load case. Ground bearing pressure (PSF) is optional.
Frequently Asked Questions
Steel crane mats are used to safely distribute high outrigger loads into the ground, reducing point pressure and improving crane stability. Without proper load distribution, even small variations in soil conditions can significantly increase the risk of ground failure or equipment instability.
Raptor Tech steel crane mats are engineered for high-capacity lifting environments where consistent load distribution and durability are critical. They are designed with:
- High strength-to-weight efficiency for easier handling
- Low deflection under heavy crane loads
- Engineered load performance for repeat lifting cycles
- Free-span capability for uneven or unstable ground conditions
- Long service life under demanding jobsite conditions
These characteristics make them a reliable choice for contractors managing complex or high-risk lifting operations.
Steel crane mats are typically required when lift loads exceed the capacity of timber or composite systems, or when soil conditions demand highly reliable load distribution. They are commonly used for:
- High-capacity cranes and heavy lifts
- Soft or variable soil conditions with low PSF
- Repetitive or long-term crane operations
- Projects requiring engineered load verification
This tool estimates crane mat sizing requirements based on the manufacturer maximum outrigger reaction force. The recommended mat is selected to ensure its ultimate capacity meets or exceeds the manufacturer-rated maximum outrigger reaction force under user selected scenarios.
Get a Quote on Steel Crane Mats
Send us your crane and lift details, and our team will confirm the right mat size and put together a quote. Request Quote on any calculator result fills in your crane details for you.
- Crane make and model
- Load case or lift conditions
- Ground bearing pressure, if known
- Mat model and quantity