Lifecycle Carbon Footprint and Economic Feasibility of Net-Zero Buildings: A Multi-Dimensional BIM–Excel Framework for Sustainable Material Selection in Tropical Climates of Patna, India
ネットゼロ建築物のライフサイクル炭素フットプリントと経済的実現可能性：インド・パトナの熱帯気候における持続可能な材料選択のための多次元BIM-Excelフレームワーク (AI 翻訳)
Sujeet Kumar Singh, Kunj Kumar Dubey, Satyaendra Ram
🤖 gxceed AI 要約
日本語
本研究は、BIMとLCA・LCCを統合したフレームワークを提案し、インド・パトナの住宅事例に適用した。最適な材料選択により、ライフサイクル全体で30～35%の炭素排出削減（400-420 kgCO₂e/m²から270-290 kgCO₂e/m²へ）が可能であることを実証。初期コストは10～15%増加するが、運用エネルギー削減により5～8年で投資回収でき、ライフサイクルコストは8～10%削減される。
English
This study proposes a BIM-LCA-LCC integrated framework and applies it to a residential case in Patna, India. Optimal material selection can reduce lifecycle carbon emissions by 30-35% (from 400-420 to 270-290 kgCO₂e/m²). Although initial costs increase by 10-15%, operating energy savings yield a payback period of 5-8 years and 8-10% lifecycle cost reduction.
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
日本でも建設分野のカーボンニュートラルに向けて、ライフサイクルアセスメントとコスト評価の統合が求められている。本フレームワークは、日本の建築設計初期段階での材料選定にも応用可能であり、特に躯体と壁システムの排出量割合（約50%）は日本の建築関連CO₂削減策の参考になる。
In the global GX context
The framework addresses embodied carbon and lifecycle costing, aligning with global net-zero building trends. The quantified emissions breakdown (structural components ~50% of lifecycle emissions) provides benchmarks for similar assessments under ISSB or EU taxonomy for sustainable construction.
👥 読者別の含意
🔬研究者:Demonstrates a practical integration of BIM, LCA, and LCC for material selection, offering a replicable methodology for building carbon accounting research.
🏢実務担当者:Provides a decision-support tool for selecting cost-effective low-carbon materials, showing a clear payback period and lifecycle cost savings.
🏛政策担当者:Offers empirical evidence on embodied carbon reduction potential and cost implications, informing building codes and green procurement policies.
📄 Abstract（原文）
Abstract The building sector is a major contributor to global greenhouse gas emissions while rising focus on embodied carbon appears after net-zero buildings reach their energy needs. The research presents a framework that combines Building Information Modelling (BIM) with Life Cycle Assessment (LCA) and Life Cycle Costing (LCC) and climate-responsive analysis to help choose materials for sustainable tropical ecosystem design. The framework uses BIM-based quantity extraction together with an Excel database that contains emission factors and cost parameters and climate performance indicators to support decision-making during the initial project stages. The framework proved effective through a residential case study which took place in Patna. The study shows that selecting the best materials can decrease embodied carbon between 30 and 35 percent which results in total emissions reduction from 400 to 420 kgCO₂e/m² down to 270 to 290 kgCO₂e/m². The study found that structural components made up almost 50 percent of all lifecycle emissions followed by wall systems as the second largest source. Sustainable construction materials increase first building expenses by 10 to 15 percent but lifecycle cost analysis shows total savings of 8 to 10 percent with a 5 to 8 year payback duration because operational energy expenses decrease.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.63148/01.2026025first seen 2026-06-29 06:40:24
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