A vast number of studies about construction defects have been published in different countries, confirming that construction defects are a global issue. This problem often adversely affects the budgets, timing, and quality of construction projects. The lack of understanding about which construction tasks are prone to defects make implementation more uncertain and increases the chances of defects. This study seeks to identify and understand the behavior and pattern of task actions that are more prone to defects through the anatomy process of a specific task. The first objective in this study was to identify, track, and record construction defects during the execution of a number of actions within a specified task. The second objective was quantifying which actions are more prone to construction defects and determining the reasons why. Fifteen case studies were conducted on residential buildings, which included 45 items focusing on the column sub-task. Initial results suggest that some actions within specific sub-tasks are more susceptible to defects. This research aims to improve the understanding of construction defects and solutions, enhance cost controls, reduce time overruns, and improve execution quality.
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