Studio 03 — Geo
From field blows to design parameters.
Paste an SPT or CPT sounding and get corrected N-values, a soil classification, cohesion, friction angle, unit weight and bearing capacity. Every result is a published correlation — named and referenced — and the full working lands in the PDF.
How it works
Raw soundings in. Referenced parameters out.
Paste the sounding
Drop in SPT blow counts or CPT tip and sleeve readings by depth, with what you know about the rig — hammer energy ratio, borehole diameter, rod length, sampler liner. Missing fields are handled with stated assumptions, not silent guesses.
Corrections applied in code
Field N is corrected to N₆₀ for energy, borehole, rod and sampler effects, then overburden-normalised to (N₁)₆₀ with Cₙ capped at 2.0. CPT tip resistance is normalised the same way. Deterministic — the same sounding always returns the same numbers.
Classify, then gate
The soil is classified first — driller's description for SPT, Robertson behaviour type for CPT — and only the physically meaningful parameters are exposed: friction angle for coarse soils, cohesion for fine. The other is flagged not-applicable rather than forced.
Bearing capacity on your footing
Enter footing width, length, depth and shape. The engine solves ultimate and allowable bearing by Terzaghi, Meyerhof, Hansen and Vesic, then reports the governing (most conservative) allowable value against your factor of safety.
A PDF that shows its working
Export the log, per-depth results and design summary — every correlation named, every assumption listed, and an uncertainty band on each output. Ask the report questions and the assistant answers only from the computed data.
What's under the hood
Named correlations, not black boxes.
Preliminary, advisory estimates from published empirical correlations — every one traceable to its source.
SPT & CPT
Field readings normalised for the things that actually bias them, before any parameter is derived.
Strength & state
Continuous fits kept consistent with the classic descriptive bands, each with an uncertainty range.
Four classical methods
Nc, Nq per Reissner/Prandtl; Nγ per each author; shape factors per De Beer/Hansen — governing value reported.
The rest of the workbench
One subscription. Three more studios.
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Turn your next sounding into a design layer.
Paste the field data, set your footing, and read the governing bearing capacity in minutes.