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Abstract

This study explores the application of Location-Based Work Sampling (LBWS) to enhance construction site management, focusing on workflow issue identification. For that, a Case Study was conducted on a new construction project in Herning, Denmark. The authors applied the LBWS tool to identify the distribution of working time of seven trades. The Case Study presented a structured five-step methodology: (1) understanding, (2) adaptation, (3) application, (4) analysis, and (5) evaluation. During the adoption step, the “Ajour system” app was selected as the optimal software based on the technique “Chosen By Advantages”. At the application step, the authors registered 2,800 random observations of worker activities classified into production, preparation, transportation, walking, talking and waiting. The analysis step aimed to understand the utility of the tool for three kinds of uses: (1) spatial-time distribution, (2) heat maps, and (3) congestion and interferences. Finally, the utility of the LBWS was evaluated through a focus group with seven construction industry-related professionals and academia. Key findings of spatial-time analysis highlighted workflow inefficiencies, such as increased waiting and preparation times of some trades. Heat maps aided in visualizing workers’ time spent at different locations, while congestion analysis revealed the negative impact of overlapping trades in the same workspace. The results of the focus group highlighted the tool’s potential for site management improvements and data-driven layout optimization. Overall, the LBWS tool received a positive response, especially for its simplicity and accessibility.

The paper will be presented:

Online

Primary U.N. Sustainable Development Goals (SDG)

Industry, Innovation and Infrastructure - - Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation

Primary CIB Task Group OR Working commission

W065 – Organisation and Management of Construction

Secondary CIB Task Group OR Working commission

W078 – Information Technology for Construction

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