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cwicr-unit-converter

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Convert between construction measurement units. Handle metric/imperial conversion, area/volume calculations, and unit normalization for CWICR data.

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What this skill does

# 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'},
    'lbs': {'factor': 0.453592, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
    'pound': {'factor': 0.453592, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
    'oz': {'factor': 0.0283495, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
    'ounce': {'factor': 0.0283495, 'category': UnitCategory.WEIGHT, 'base': 'kg'},
    'st': {'factor': 907.185, 'category': UnitCategory.WEIGHT, 'base': 'kg'},  # Short ton (US)

    # Time to hours
    'hr': {'factor': 1.0, 'category': UnitCategory.TIME, 'base': 'hr'},
    'hour': {'factor': 1.0, 'category': UnitCategory.TIME, 'base': 'hr'},
    'hours': {'factor': 1.0, 'category': UnitCategory.TIME, 'base': 'hr'},
    'h': {'factor': 1.0, 'category': UnitCategory.TIME, 'base': 'hr'},
    'min': {'factor': 1/60, 'category': UnitCategory.TIME, 'base': 'hr'},
    'minute': {'factor': 1/60, 'category': UnitCategory.TIME, 'base': 'hr'},
    'day': {'factor': 8.0, 'category': UnitCategory.TIME, 'base': 'hr'},  # 8-hour workday
    'days': {'factor': 8.0, 'category': UnitCategory.TIME, 'base': 'hr'},
    'week': {'factor': 40.0, 'category': UnitCategory.TIME, 'base': 'hr'},  # 40-hour week

    # Quantity (no conversion, just counting)
    'ea': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'each': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'pc': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'pcs': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'piece': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'pieces': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'no': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'nr': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'set': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'lot': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},
    'ls': {'factor': 1.0, 'category': UnitCategory.QUANTITY, 'base': 'ea'},  # Lump sum
}


class CWICRUnitCon
Files: 3
Size: 18.8 KB
Complexity: 29/100
Category: Ads & Marketing
Source: https://github.com/datadrivenconstruction/ddc_skills_for_ai_agents_in_construction/tree/main/1_DDC_Toolkit/CWICR-Database/cwicr-unit-converter

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