GeoStructPy
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Disclaimer: This tool is intended for use by the APEC Consultancy team for preliminary geotechnical calculations only. The developers assume no liability for design decisions made based on the output of this application. All results must be verified by a qualified geotechnical or structural engineer before use in any project.

SPT & UCS Graph Maker

Generate professional SPT N-value, corrected N60, and UCS vs Depth charts for geotechnical reports. Enter raw SPT N-values per borehole — all three charts are generated automatically.

Correlations used: N60 = N × (Er/60), where Er = 72% (safety hammer)  |  UCS ≈ 12.5 × N60 (kPa)