Geotechnical Foundation Design Analyzer
Convert soil data into foundation design parameters with bearing capacity and settlement calculat...
What You Can Do
You can input soil boring logs, laboratory test results, and site conditions to automatically generate bearing capacity calculations, settlement estimates, and foundation type recommendations. The skill interprets SPT and CPT data, synthesizes geotechnical parameters (φ, c, γ, Su values), and applies industry-standard methods (Terzaghi, Meyerhof, Hansen) to produce design-ready outputs with verified factors of safety for regulatory and client approval.
Features
Analyzes SPT and CPT data to classify soil layers and extract geotechnical properties
Applies Terzaghi, Meyerhof, and Hansen methods with shape, depth, and inclination factors
Predicts immediate and consolidation settlement for shallow foundations using elastic and compression theory
Compares shallow spread footings versus deep pile options with cost and buildability implications
Quantifies FS margins for bearing capacity and settlement with geotechnical uncertainty bands
Identifies adverse conditions (liquefiaction potential, expansive soils, low bearing capacity) requiring design mitigation
Produces technical summaries documenting foundation selection rationale and design constraints
Example Output
Input: SPT boring log (N-values 0-30m depth), triaxial test results (φ = 32°, c = 5 kPa), unit weights, proposed 2-story building load (500 kN per footing)
Output:
FOUNDATION DESIGN SUMMARY
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Soil Profile: 0-4m silty sand (φ=32°, γ=18 kN/m³) | 4-12m clay (φ=28°, Su=45 kPa)
Bearing Capacity (Shallow Foundation @ 1.2m depth)
Ultimate: 485 kPa | Design: 242 kPa (FS 2.0)
Recommended footing: 2.2m × 2.2m @ 1.2m depth
Settlement Estimate
Immediate: 8 mm | Consolidation: 12 mm (over 5 years) | Total: 20 mm
Differential: ±5 mm acceptable for typical structure
Recommendation: Shallow spread footings viable. Monitor settlement during construction.
What's Included
- SKILL.md instruction file with soil classification reference and calculation method selection:
- Bearing Capacity Calculator: Terzaghi, Meyerhof, Hansen method templates with correction factors
- Settlement Analysis Worksheet: Elastic and consolidation formulas with parameter input table
- Soil Parameter Synthesis Template: SPT-to-φ correlations, lab test data interpretation checklist
- Design Memo Framework: Technical summary template with geotechnical constraints and foundation selection rationale
Who It's For
- Geotechnical engineers — Design foundation systems and verify bearing capacity calculations
- Civil engineers — Develop foundation specifications and evaluate buildability constraints
- Site engineers — Assess soil conditions and communicate geotechnical limits to design teams
- Structural engineers — Obtain design-ready foundation parameters and load capacities
- Project managers — Understand geotechnical risks and foundation cost implications early in design
Best For
- Converting soil boring logs into actionable bearing capacity values and foundation recommendations
- Evaluating shallow vs. deep foundation options with cost and risk tradeoffs
- Calculating immediate and consolidation settlement for sensitivity analysis
- Flagging geotechnical hazards (low capacity, settlement risk, liquefiable layers) in design memos
- Documenting design rationale with factors of safety for client approval and regulatory compliance
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