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An openBIM–openGIS framework for route-aware embodied-carbon assessment in public building procurement

公共建築調達における経路考慮型エンボディドカーボン評価のためのopenBIM–openGISフレームワーク (AI 翻訳)

Hamed Fathnejat, Farzad Jalaei, Pavel A. Popov, Arash Hosseini Gourabpasi

Figshare📚 査読済 / ジャーナル2026-08-11#炭素会計Origin: Global経営インパクト: 調達リスク対象セクター: construction
DOI: 10.6084/m9.figshare.33204250.v1
原典: https://doi.org/10.6084/m9.figshare.33204250.v1

🤖 gxceed AI 要約

日本語

本研究は、BIMとGISを統合し、建設資材輸送の経路を考慮したエンボディドカーボン（A4）評価フレームワークを提案する。従来の固定距離仮定を、オープンなGISルーティングツールによる実ネットワーク距離に置き換え、トロントの公共建築事例でA4排出量が17.8%増加することを示した。透明性と再現性を高め、低炭素調達の意思決定を支援する。

English

This study proposes an openBIM-openGIS framework for route-aware embodied-carbon (A4) assessment, replacing static distance assumptions with network-based routing. A Toronto public-building case shows a 17.8% increase in A4 emissions, highlighting spatial variability in construction logistics and supporting low-carbon procurement decisions.

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

日本では、建設分野の脱炭素に向けて、資材調達を含むサプライチェーン排出量の算定が重要視されている。本フレームワークは、BIMとGISを活用した精緻なA4排出量評価を可能にし、公共工事の低炭素調達やゼロエミッション建築の推進に寄与する可能性がある。

In the global GX context

Globally, this framework addresses the need for transparent and spatially explicit embodied-carbon accounting in construction, aligning with TCFD/ISSB disclosure trends and circular economy goals. It offers a reproducible method for assessing supply-chain emissions, supporting evidence-based procurement policies and corporate sustainability reporting.

👥 読者別の含意

🔬研究者:Provides a methodological advance in BIM-LCA integration with open-source GIS routing, enabling more accurate A4 emission estimates.

🏢実務担当者:Offers a tool for construction firms and public agencies to assess and reduce transport-related embodied carbon in procurement.

🏛政策担当者:Demonstrates the importance of route-aware logistics in carbon accounting, informing low-carbon procurement standards and regulations.

📄 Abstract（原文）

Urban construction supply chains contribute substantially to greenhouse-gas emissions and logistical inefficiencies, partly due to fragmented digital workflows between Building Information Modelling (BIM) and Geographic Information Systems (GIS). This study introduces an openBIM–openGIS integration framework for route-aware embodied-carbon modelling by coupling BIM-based material quantity data with GIS-derived transportation networks. Conceptually, openBIM provides the material-demand layer, openGIS provides the spatial-network layer, route-aware modelling links supplier locations to network distances, and embodied-carbon accounting quantifies route-specific A4 impacts. The approach replaces static distance assumptions in conventional BIM–LCA procurement models with network-derived routeing data generated through a newly developed Open-GIS routeing tool. The containerized tool, available as a web application and programmable API, automates multi-origin supplier-to-site routeing using open geospatial datasets and API-driven services. Beyond embodied-carbon analysis, the API architecture can support integration with software development, data-driven modelling, and decision-support workflows. A Toronto public-building case compares a conventional 100 km baseline with supplier-specific heavy-goods-vehicle routeing. The route-aware model increased estimated A4 emissions by 17.8%, revealing sensitivity to supplier geography and road-network connectivity. These results indicate that fixed-distance assumptions can mask spatial variation in construction logistics. By improving transparency, reproducibility, and spatial specificity, the framework supports evidence-based low-carbon procurement decision-making within construction management. Develops an open-source GIS routeing tool and API for BIM–LCA integration.Replaces the static 100 km transport assumption with network-based routeing.Demonstrates a 17.8% increase in A4 emissions under route-aware modelling.Enables scalable multi-origin logistics assessment across material supply chains.Supports interoperable and sustainable procurement in public building projects. Develops an open-source GIS routeing tool and API for BIM–LCA integration. Replaces the static 100 km transport assumption with network-based routeing. Demonstrates a 17.8% increase in A4 emissions under route-aware modelling. Enables scalable multi-origin logistics assessment across material supply chains. Supports interoperable and sustainable procurement in public building projects.

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