co2-estimation

CO2 Estimation for Construction

Overview

Based on DDC methodology (Chapter 3.3), this skill provides comprehensive CO2 and carbon footprint calculations for construction projects. Sustainability is no longer optional - clients and regulations demand accurate environmental impact assessments.

Book Reference: "4D, 6D-8D и расчет CO2" / "4D-8D BIM and CO2 Calculation"

"Расчет углеродного следа становится обязательным требованием для многих проектов. BIM-модель содержит все необходимые данные для автоматизации этого процесса." — DDC Book, Chapter 3.3

Quick Start

import pandas as pd

# Load BIM elements with materials
df = pd.read_excel("bim_elements.xlsx")

# CO2 emission factors (kg CO2 per unit)
emission_factors = {
    'Concrete': 0.13,      # kg CO2 per kg
    'Steel': 1.85,         # kg CO2 per kg
    'Brick': 0.24,         # kg CO2 per kg
    'Timber': -1.6,        # negative = carbon sink
    'Glass': 0.85,         # kg CO2 per kg
    'Aluminum': 8.14       # kg CO2 per kg
}

# Calculate emissions
df['CO2_kg'] = df.apply(
    lambda row: row['Weight_kg'] * emission_factors.get(row['Material'], 0),
    axis=1
)

total_co2 = df['CO2_kg'].sum()
print(f"Total Carbon Footprint: {total_co2:,.0f} kg CO2")
print(f"Equivalent: {total_co2/1000:,.1f} tonnes CO2")

Emission Factors Database

Material Emission Factors (Embodied Carbon)

# Comprehensive emission factors database (kg CO2e per kg material)
EMISSION_FACTORS_KG = {
    # Concrete and cement
    'Concrete_C20': 0.10,
    'Concrete_C30': 0.13,
    'Concrete_C40': 0.16,
    'Concrete_C50': 0.19,
    'Cement_Portland': 0.83,
    'Mortar': 0.20,

    # Metals
    'Steel_Reinforcing': 1.85,
    'Steel_Structural': 1.55,
    'Steel_Recycled': 0.47,
    'Aluminum_Primary': 8.14,
    'Aluminum_Recycled': 0.52,
    'Copper': 2.71,

    # Masonry
    'Brick_Clay': 0.24,
    'Brick_Concrete': 0.12,
    'Stone_Natural': 0.06,
    'Block_Concrete': 0.10,

    # Wood (negative = carbon sequestration)
    'Timber_Softwood': -1.60,
    'Timber_Hardwood': -1.40,
    'Plywood': 0.45,
    'CLT': -1.20,          # Cross-Laminated Timber
    'Glulam': -1.10,

    # Insulation
    'Insulation_Mineral': 1.20,
    'Insulation_EPS': 3.29,
    'Insulation_XPS': 3.45,
    'Insulation_Cellulose': 0.10,

    # Glass
    'Glass_Float': 0.85,
    'Glass_Double': 1.30,
    'Glass_Triple': 1.80,

    # Plastics
    'PVC': 2.61,
    'HDPE': 1.93,
    'Polycarbonate': 5.00,

    # Other
    'Gypsum_Board': 0.39,
    'Ceramic_Tile': 0.78,
    'Asphalt': 0.05
}

# Emission factors per volume (kg CO2e per m³)
EMISSION_FACTORS_M3 = {
    'Concrete_C30': 312,    # ~2400 kg/m³ * 0.13
    'Steel': 14430,         # ~7800 kg/m³ * 1.85
    'Timber': -800,         # ~500 kg/m³ * -1.6
    'Brick': 432,           # ~1800 kg/m³ * 0.24
    'Glass': 2125           # ~2500 kg/m³ * 0.85
}