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1Paste CPT Profile Data

Paste three columns from your CPT software: depth, qc (tip resistance), and the friction column (fs or Rf). Comma- or tab-separated, with a header row. One reading per line. Set the units for each column below: we preselect what we detect from your header, but your selection is what we use.

Load sample CPT data
2Profile Visualization & Critical Layer
Critical Layer (Auto-selected)
Why this layer?

The critical layer is the 1 m depth window (between 0.5 m and 15 m) with the lowest average cone resistance (qc): the weakest sand-like zone, which controls liquefaction susceptibility. Fine-grained readings (friction ratio above 5%, or Ic above 2.6) are excluded so the window stays within the clean-sand framework the screening curves are calibrated for. Adjust the depth range below if your judgment differs.

Adjust Critical Layer (optional)
Reset to auto-selection
Seismic hazard
Site conditions
Prefilled from the GWT depth above; edit if different.

Results

Insufficient data for a risk level.
AI Engineering Analysis

Case History Comparison: CSR vs Normalized Tip Resistance
Liquefied Not liquefied ★Your input BI2014 CRR (Mw=7.5, FC<5%)
#Site / EventPGA / Mwqc / N60Fines % / D50Vs / DepthOutcomeSimilarity

GeoLiquefy LLC is an independent, for-profit company. The Liquefaction Hazard Engine cites the Next Generation Liquefaction (NGL) database as a data source but is not affiliated with, endorsed by, or sponsored by the NGL project or its funding agencies. All NGL data is used in accordance with the NGL project's terms of use.

GeoLiquefy LLC, Liquefaction Hazard Engine (CPT Profile Tool)
geoliquefy.com · Brandenberg et al. (2020) · Boulanger & Idriss (2014) · DOI: 10.21222/C2J040