Rausch, C; Lu, R; Talebi, S and Haas, C (2023) Deploying 3D scanning based geometric digital twins during fabrication and assembly in offsite manufacturing. International Journal of Construction Management, 23(3), pp. 565-578. ISSN 1562-3599
Abstract
Verifying geometric compliance in offsite manufacturing (OSM) is key for ensuring adequate fit-up, structural integrity, building system performance, and assembly alignment on site. The use of a geometric digital twin (gDT) from 3 D scanning can be used to digitize an assembly to detect and resolve potential problems in a prescient manner. The contribution of this article is the development of a framework for deploying and comparing three distinct gDT approaches for use during fabrication and assembly in OSM: (1) a scan-vs-BIM approach, (2) a scan-to-BIM approach and (3) a parametric BIM updating approach. Results from a commercial building project show that scan-vs-BIM is the most accurate approach, parametric BIM updating produces the most semantically rich gDT, and scan-to-BIM is a middle-tiered option, striking a balance between representational accuracy and semantic enrichment. This study concludes that future research should develop a hybrid solution of these gDT approaches and additional more accurate measurement technologies for optimal deployment in OSM.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | building information modelling; digital twin; laser scanning; modular construction; offsite manufacturing; parametric design; quality control |
| Index terms: | laser scanning, building system, option, digital twin, modular construction, building information modelling, accuracy, fabrication, quality control, commercial building, integrity, compliance, parametric design |
| Subjects: | design methods, decision analysis, building construction, construction type, engineering systems, manufacturing engineering, health safety and environment, professional development, information systems, digital engineering, project delivery, analytical methods |
| Topics: | Quality Management, Health and Safety, Construction Technology, Information Management, Engineering Principles, Design Practice, Digital Applications, Risk Management |
| Descriptive scope: | 2 PC |
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