Notes
Worked examples, standards explained plainly, and the reasoning behind what the software does — with interactive charts you can read values off.
2 articles
What each SPT correction factor does, when it applies, and a worked example taking a field blow count of 18 through energy, borehole, rod, sampler and overburden corrections to N1(60).
How Atterberg limits become a USCS group symbol — the A-line, the U-line, the CL-ML band, and the checks that catch a misclassified sample before it reaches the borehole log.
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Everything discussed here is what GeoEQ SPT Logs does with your field data — free for Windows.