earth-pressure-calculator

# Earth Pressure Calculator Skill ## Purpose The Earth Pressure Calculator Skill determines lateral earth pressures on retaining structures using Rankine, Coulomb, and seismic methods for design of retaining walls and basement walls. ## Capabilities - Active earth pressure (Rankine, Coulomb) - Passive earth pressure - At-rest earth pressure - Surcharge effects - Layered soil conditions - Seismic earth pressure (Mononobe-Okabe) - Sloping backfill effects - Water pressure considerations ## Usage Guidelines ### When to Use - Designing retaining walls - Analyzing basement walls - Evaluating excavation support - Assessing seismic pressures ### Prerequisites - Soil parameters available - Wall geometry defined - Surcharge loads identified - Groundwater level known ### Best Practices - Select appropriate theory - Consider wall movement - Include seismic where required - Account for drainage ## Process Integration This skill integrates with: - Retaining Wall Design - Foundation Design ## Configuration ```yaml earth-pressure-calculator: theories: - rankine - coulomb - log-spiral pressure-states: - active - passive - at-rest seismic: - mononobe-okabe - wood ``` ## Output Artifacts - Pressure diagrams - Force calculations - Moment summaries - Seismic increment values