PPolySim OS
For K-12 Students · Soil Bearing

Soil Bearing for a solar-panel mount

Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a solar-panel mount live below — adjust the inputs and watch it respond, right in your browser.

Soil Bearing Capacity (Terzaghi)Live
Allowable bearing pressure
400kPa
Allowable load ≈ 801 kN per metre of footing

Controls

Presets

Terzaghi's equation predicts the ultimate bearing capacity of a shallow footing as the sum of cohesion, surcharge, and self-weight terms, each with a bearing-capacity factor that grows sharply with the soil friction angle. Dividing by a factor of safety gives the allowable pressure. Educational tool, not a geotechnical design.

▶ Run in Python

Data Inspector

Nc30.1
Nq18.4
22.4
Ultimate qult1201 kPa

Governing equation

Reading this result: Mixed c-φ soil: all three terms contribute — deeper embedment and a wider footing both push the ultimate capacity higher.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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More with Soil Bearing

Frequently asked questions

Is this good for k-12 students?
Yes — this version of "Soil Bearing for a solar-panel mount" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.