https://doi.org/10.24928/2022/0125
Breakdown Work Sampling
Stephanie Salling1, Cristina T. Pérez2 & Søren Wandahl3
1Research Assistant, Department of Civil & Architectural Engineering, Aarhus University, Denmark, [email protected], https://orcid.org/0000-0001-7088-64582Postdoc, Department of Civil & Architectural Engineering, Aarhus University, Denmark, [email protected], https://orcid.org/0000-0002-4182-1492
3Professor, Department of Civil & Architectural Engineering, Aarhus University, Denmark, [email protected], https://orcid.org/0000-0001-8708-6035
Abstract
The Work Sampling (WS) technique has been used in the construction industry since the 1960s to understand how workers spend their time. However, the WS categories have exhibited variation throughout history due to interpretation and application discrepancies. This lack of consensus on what represents Value-Adding-Work (VAW) and Non-ValueAdding-Work (NVAW), has hindered the use of data from previous WS studies for further analysis. For this reason, this research aims to understand how the data obtained from the WS application can be analyzed to discuss value. To address this question, the authors adopted a case study as the primary research strategy. The phenomenon of the present study comprises the activities involved in the renovation process in residential buildings. The phenomenon is studied through the application of the WS technique. The authors adopted previous analyses from the existing literature and proposed new types of analyses. The discussion section presents various kinds of analysis based on a breakdown of categories into codes: (1) general analysis; (2) a category breakdown analysis; (3) one single component/material analysis; (4) recategorized activities analysis; and (5) correlation analysis. The proposal of a detailed code classification, named breakdown work sampling, represents the main novelty of this study.
Keywords
Work sampling, construction site, waste time, direct work
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Reference
Salling, S. , Pérez, C. T. & Wandahl, S. 2022. Breakdown Work Sampling, Proc. 30th Annual Conference of the International Group for Lean Construction (IGLC) , 223-234. doi.org/10.24928/2022/0125
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