Skill368 repo starsupdated 9d ago
cwicr-unit-converter
The CWICR Unit Converter normalizes construction measurements across metric and imperial systems, handling length, area, volume, weight, and time conversions for standardized data integration. Use this skill when importing BIM quantities, cost data, or project measurements from multiple sources or regions that require consistent unit representation for CWICR analysis and reporting.
Install in Claude Code
Copygit clone --depth 1 https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction /tmp/cwicr-unit-converter && cp -r /tmp/cwicr-unit-converter/1_DDC_Toolkit/CWICR-Database/cwicr-unit-converter ~/.claude/skills/cwicr-unit-converterThen start a new Claude Code session; the skill loads automatically.
Definition
SKILL.md
# CWICR Unit Converter
## Business Case
### Problem Statement
Construction data comes in various unit systems:
- Metric vs Imperial measurements
- Different unit conventions by trade
- BIM quantities need normalization
- Regional standards differ
### Solution
Comprehensive unit conversion for construction quantities, normalizing data for CWICR integration and analysis.
### Business Value
- **Accuracy** - Eliminate unit conversion errors
- **Consistency** - Standardize across projects
- **Integration** - BIM to cost data alignment
- **Global** - Support international projects
## Technical Implementation
```python
import pandas as pd
import numpy as np
from typing import Dict, Any, List, Optional, Tuple, Union
from dataclasses import dataclass
from enum import Enum
class UnitCategory(Enum):
"""Categories of measurement units."""
LENGTH = "length"
AREA = "area"
VOLUME = "volume"
WEIGHT = "weight"
TIME = "time"
QUANTITY = "quantity"
class UnitSystem(Enum):
"""Unit systems."""
METRIC = "metric"
IMPERIAL = "imperial"
MIXED = "mixed"
@dataclass
class UnitConversion:
"""Unit conversion result."""
original_value: float
original_unit: str
converted_value: float
target_unit: str
conversion_factor: float
category: UnitCategory
# Conversion factors to base units
# Base units: meter (length), m² (area), m³ (volume), kg (weight), hour (time)
CONVERSIONS = {
# Length to meters
'm': {'factor': 1.0, 'category': UnitCategory.LENGTH, 'base': 'm'},
'meter': {'factor': 1.0, 'category': UnitCategory.LENGTH, 'base': 'm'},
'meters': {'factor': 1.0, 'category': UnitCategory.LENGTH, 'base': 'm'},
'cm': {'factor': 0.01, 'category': UnitCategory.LENGTH, 'base': 'm'},
'mm': {'factor': 0.001, 'category': UnitCategory.LENGTH, 'base': 'm'},
'km': {'factor': 1000.0, 'category': UnitCategory.LENGTH, 'base': 'm'},
'ft': {'factor': 0.3048, 'category': UnitCategory.LENGTH, 'base': 'm'},
'feet': {'factor': 0.3048, 'category': UnitCategory.LENGTH, 'base': 'm'},
'foot': {'factor': 0.3048, 'category': UnitCategory.LENGTH, 'base': 'm'},
'in': {'factor': 0.0254, 'category': UnitCategory.LENGTH, 'base': 'm'},
'inch': {'factor': 0.0254, 'category': UnitCategory.LENGTH, 'base': 'm'},
'inches': {'factor': 0.0254, 'category': UnitCategory.LENGTH, 'base': 'm'},
'yd': {'factor': 0.9144, 'category': UnitCategory.LENGTH, 'base': 'm'},
'yard': {'factor': 0.9144, 'category': UnitCategory.LENGTH, 'base': 'm'},
'yards': {'factor': 0.9144, 'category': UnitCategory.LENGTH, 'base': 'm'},
'mi': {'factor': 1609.344, 'category': UnitCategory.LENGTH, 'base': 'm'},
'mile': {'factor': 1609.344, 'category': UnitCategory.LENGTH, 'base': 'm'},
'lf': {'factor': 0.3048, 'category': UnitCategory.LENGTH, 'base': 'm'}, # Linear foot
# Area to m²
'm2': {'factor': 1.0, 'category': UnitCategory.AREA, 'base': 'm2'},
'm²': {'factor': 1.0, 'category': UnitCategory.AREA, 'base': 'm2'},
'sqm': {'factor': 1.0, 'category': UnitCategory.AREA, 'base': 'm2'},
'cm2': {'factor': 0.0001, 'category': UnitCategory.AREA, 'base': 'm2'},
'mm2': {'factor': 0.000001, 'category': UnitCategory.AREA, 'base': 'm2'},
'ha': {'factor': 10000.0, 'category': UnitCategory.AREA, 'base': 'm2'},
'hectare': {'factor': 10000.0, 'category': UnitCategory.AREA, 'base': 'm2'},
'ft2': {'factor': 0.092903, 'category': UnitCategory.AREA, 'base': 'm2'},
'sf': {'factor': 0.092903, 'category': UnitCategory.AREA, 'base': 'm2'},
'sqft': {'factor': 0.092903, 'category': UnitCategory.AREA, 'base': 'm2'},
'yd2': {'factor': 0.836127, 'category': UnitCategory.AREA, 'base': 'm2'},
'sy': {'factor': 0.836127, 'category': UnitCategory.AREA, 'base': 'm2'}, # Square yard
'acre': {'factor': 4046.86, 'category': UnitCategory.AREA, 'base': 'm2'},
# Volume to m³
'm3': {'factor': 1.0, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'm³': {'factor': 1.0, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'cbm': {'factor': 1.0, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'l': {'factor': 0.001, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'liter': {'factor': 0.001, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'litre': {'factor': 0.001, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'ml': {'factor': 0.000001, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'ft3': {'factor': 0.0283168, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'cf': {'factor': 0.0283168, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'cuft': {'factor': 0.0283168, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'yd3': {'factor': 0.764555, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'cy': {'factor': 0.764555, 'category': UnitCategory.VOLUME, 'base': 'm3'}, # Cubic yard
'cuyd': {'factor': 0.764555, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'gal': {'factor': 0.00378541, 'category': UnitCategory.VOLUME, 'base': 'm3'},
'gallon': {'factor': 0.00378541, 'category': UnitCategory.VOLUME, 'base': 'm3'},
# Weight to kg
'kg': {'factor': 1.0, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
'kilogram': {'factor': 1.0, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
'g': {'factor': 0.001, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
'gram': {'factor': 0.001, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
'mg': {'factor': 0.000001, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
't': {'factor': 1000.0, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
'ton': {'factor': 1000.0, 'category': UnitCategory.WEIGHT, 'base': 'kg'}, # Metric ton
'tonne': {'factor': 1000.0, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
'mt': {'factor': 1000.0, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
'lb': {'factor': 0.453592, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
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