Examples: real models, real results
Everything below runs live in your browser on the FERS finite-element engine — interactive 3D models, a fully worked Eurocode 3 check, and the validation suites that keep the solver honest.
Interactive 3D viewer examples
Open a complete model, run the calculation and inspect the results — no account needed.
A 10-node, 21-member steel shed. Run the analysis in your browser, then inspect reactions, N/V/M force diagrams and the deflected shape on the real 3D model.
A ballasted PV mounting structure. Explore member forces and displacements on a model with realistic load cases.
Want to change the model itself? Open the editor with the shed example.
Worked examples
A 7.5 m IPE 400 in S355, checked step by step to EN 1993-1-1: bending, shear and the lateral-torsional buckling utilization that actually governs — every number solver-computed.
A 4 m × 3 m steel portal solved twice: pinned bases under gravity, checked against the closed-form solution to 0.04 %, then fixed bases with a lateral load where equilibrium is the proof.
Validation
Don't take the results on faith — the solver is continuously checked against published benchmarks and closed-form solutions.
Free calculators
Quick single-purpose tools, each cross-checked live against the same finite-element engine.
Python examples
Prefer code? The open-source fers_core package ships runnable example scripts for every feature.
Build, solve and post-process models from Python — the same engine as the browser app.
Build your own model
3D frames and trusses, load combinations, Eurocode EC3 checks and calculation reports — free tier, no install.
Wondering which axis is up or why the strong axis is called z? See the conventions & units reference.