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cd-calculator

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Python calculators for geometry analysis, structural checking, solar calculations, panel optimization, mesh analysis, material estimation, and fabrication cost estimation for AEC computational design

skills/cd-calculator/SKILL.md

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# Computational Design Calculator

## Calculator Overview

This skill provides **7 production-grade Python calculators** purpose-built for computational design workflows in Architecture, Engineering, and Construction (AEC). Each calculator is a standalone command-line tool that accepts domain-specific parameters and returns precise, well-formatted results.

All calculators share common design principles:

- **Human-readable output by default** with clear section headers, formatted tables, and summary statistics.
- **`--json` flag** on every calculator for structured machine-readable output, enabling pipeline integration with parametric design tools, Grasshopper scripts, Dynamo graphs, or custom automation.
- **Strict input validation** with meaningful error messages that guide the user toward correct usage.
- **SI units throughout** (millimeters for geometry, kilonewtons for forces, degrees for angles) with Imperial equivalents noted where relevant.
- **Deterministic calculations** based on published engineering formulas (Eurocode, ASCE, ASHRAE) so results can be cross-checked and audited.
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