Comparative Environmental Impacts of Reconstructing vs. Extending Mid-Rise Office Buildings
中層オフィスビルにおける再建と増築の環境影響比較 (AI 翻訳)
A. Kumbhar, Archanaa Dongre, Puja Kadam, Ajay Radke
🤖 gxceed AI 要約
日本語
インドの商業オフィスビルを対象に、既存建物を解体して新築する場合と、既存構造を活用して増築する場合の環境影響を比較。コンクリート消費量と建設廃棄物量に基づき、特に体化炭素排出量を評価。結果は、既存構造を活用する増築戦略が解体新築よりも環境負荷を低減することを示している。
English
This paper compares two redevelopment strategies for a mid-rise office building in India: full demolition and reconstruction, versus retaining the existing structure and adding floors. It quantifies embodied carbon using concrete consumption and debris generation, finding that adaptive reuse significantly reduces environmental impact.
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
日本の建築業界は人口減少と既存ストックの増加により、再開発における環境負荷低減が重要。SSBJの対象範囲には建設資材のライフサイクル評価も含まれ、本論文の知見は日本での既存ビル活用の判断に資する。
In the global GX context
Globally, the construction sector accounts for nearly 40% of emissions. This paper provides empirical evidence for the benefits of adaptive reuse over demolition, supporting circular economy principles and embodied carbon reduction strategies relevant to ISSB and CSRD disclosure requirements for asset-level impacts.
👥 読者別の含意
🔬研究者:Researchers in sustainable construction and lifecycle analysis will find a clear methodology for comparing embodied carbon of redevelopment strategies.
🏢実務担当者:Corporate real estate and construction teams can use the comparative framework to justify adaptive reuse decisions in their sustainability reports.
🏛政策担当者:Urban planners and building code regulators can incorporate these findings to incentivize renovation over demolition.
📄 Abstract（原文）
The construction industry plays a crucial role in advancing sustainable development but remains one of the largest contributors to global greenhouse gas emissions and material waste. Decision-making during the planning stage of a redevelopment project-particularly whether to demolish an existing structure or to retain and expand it-has significant implications for the environmental and economic performance of buildings. This paper presents a comparative assessment of two redevelopment strategies for a commercial office building in India: Option A, which involves demolishing an existing sevenstory structure and constructing a new seventeen-story building, and Option B, which involves retaining the existing structure and adding ten additional floors above. The study focuses on two key environmental performance indicators-concrete consumption and construction debris generation-which are strongly correlated with embodied carbon. Using an India-specific embodied carbon factor of $320 ~\text{kg} \text{CO}_{2} \mathrm{e} / \mathrm{m}^{3}$ of concrete, the paper quantifies the embodied carbon impacts of both redevelopment options. Results indicate that Option A results in higher total embodied emissions due to full demolition and reconstruction, while Option B achieves substantial embodied energy savings through adaptive reuse, despite requiring additional concrete for structural strengthening. The findings provide insights into the environmental, economic, and social implications of sustainable redevelopment practices in rapidly urbanizing contexts like India.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1109/ic3et64989.2026.11467155first seen 2026-06-29 07:14:33 · last seen 2026-07-04 05:39:41
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