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From design to decarbonisation: a BIM-based comparative analysis of embodied carbon in buildings

設計から脱炭素へ：建物のエンボディドカーボンに関するBIMベースの比較分析 (AI 翻訳)

Orhan Ercal, Muhammad Shafique

Carbon Footprints📚 査読済 / ジャーナル2026-06-10#炭素会計経営インパクト: コスト削減対象セクター: construction
DOI: 10.20517/cf.2026.02
原典: https://doi.org/10.20517/cf.2026.02

🤖 gxceed AI 要約

日本語

本研究はBIM-LCA統合フレームワークを用いて、英国の同一住宅に鋼、鉄筋コンクリート、木造の3構造システムを適用し、ゆりかごから現場までの体化炭素を比較した。結果、木造が最も低炭素であり、低炭素材料代替により最大40%削減可能。初期設計段階での持続可能な意思決定の重要性を示す。

English

This study presents a BIM-based LCA framework to compare embodied carbon of steel, reinforced concrete, and timber structural systems in a UK residential building. Timber has the lowest emissions, and low-carbon material alternatives reduce embodied carbon by up to 40.4%. It emphasizes early-stage sustainable design for building decarbonization.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

本論文の手法は日本の建築分野での体化炭素評価に応用可能であり、GX政策や木造推進の潮流と整合する。日本のLCA規制やサプライチェーン排出量算定の参考となる。

In the global GX context

This paper adds empirical evidence to the global BIM-LCA literature on embodied carbon, relevant for construction companies aiming to align with ISSB/TCFD disclosure requirements and net-zero targets.

👥 読者別の含意

🔬研究者:Provides a replicable BIM-LCA methodology and comparative data for embodied carbon of structural systems.

🏢実務担当者:Offers actionable benchmarks for selecting low-carbon structural systems in building design.

🏛政策担当者:Supports policies promoting timber construction and low-carbon materials in building codes.

📄 Abstract（原文）

The construction industry is a significant contributor to global carbon emissions, with embodied carbon accounting for a growing proportion of building life-cycle emissions. Comparative analyses that assess various structural systems within a single, controlled building design remain limited, despite increasing interest in building information modelling- life cycle assessment (BIM-LCA) integration. This study addresses this gap by providing a BIM-based assessment framework that quantifies and compares the embodied carbon of three structural systems (steel, reinforced concrete, and timber) applied to an identical conceptual two-storey residential structure in the UK. Material quantities were extracted from a parametric Revit model and integrated with emission factors within a cradle-to-gate (A1-A3) system boundary. The results indicate that total embodied carbon amounts to 104,165 kgCO2eq for a traditional steel house, 84,640 kgCO2eq for a traditional reinforced concrete house, and 51,255 kgCO2eq for a traditional timber house. By employing low-carbon material alternatives, embodied carbon is reduced by 40.4% in the steel house, 32.2% in the concrete house, and 19.7% in the timber house, respectively. Thus, encouraging early-stage sustainable design decisions can make a substantial contribution to the decarbonisation of the built environment.

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