# Soil Classification Tool

> Soil classification skill using USCS and AASHTO systems with SPT correlations

- Skill: `a5c-ai/soil-classification-tool` (Agent Skill)
- Install (CLI): `npx skillmds@latest add a5c-ai/soil-classification-tool`
- Raw SKILL.md: https://api.skillmd.com/api/skills/a5c-ai/soil-classification-tool/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: a5c-ai (https://skillmd.com/u/a5c-ai)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/a5c-ai/soil-classification-tool

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# Soil Classification Tool Skill

## Purpose

The Soil Classification Tool Skill classifies soils using USCS and AASHTO systems, interprets Atterberg limits, and provides SPT correlation calculations for engineering properties.

## Capabilities

- USCS classification
- AASHTO soil classification
- Atterberg limits interpretation
- Grain size distribution analysis
- Soil description generator
- SPT correlation calculations
- Relative density estimation
- Consistency determination

## Usage Guidelines

### When to Use
- Classifying soil samples
- Interpreting laboratory data
- Estimating engineering properties
- Preparing geotechnical reports

### Prerequisites
- Laboratory test data available
- Grain size distribution known
- Atterberg limits tested
- SPT values recorded

### Best Practices
- Follow standard procedures
- Consider local correlations
- Document sample quality
- Verify visual description

## Process Integration

This skill integrates with:
- Geotechnical Site Investigation

## Configuration

```yaml
soil-classification-tool:
  systems:
    - USCS
    - AASHTO
  correlations:
    - SPT-friction-angle
    - SPT-undrained-strength
    - SPT-relative-density
  outputs:
    - classification
    - description
    - properties
```

## Output Artifacts

- Soil classifications
- Property correlations
- Boring logs
- Soil descriptions