Development of WBS (Work Breakdown Structure) standards on risk-based urban drainage projects to improve implementation time performance
Keywords:
Work Breakdown Structure (WBS), risk-based WBS, risk management, schedule performance, urban drainage projectsAbstract
This study aims to develop a standard WBS (Work Breakdown Structure) for urban drainage projects and identify risk factors that affect project schedule performance. This study uses a quantitative descriptive approach involving a literature review, expert validation, a preliminary survey, a respondent survey, a risk analysis, and the Delphi method. Data collection was conducted through six stages: initial WBS expert validation, final WBS expert validation, initial risk expert validation, a preliminary survey, a respondent survey, and final risk expert validation. Respondents consisted of construction practitioners involved in urban drainage projects, while expert validation was conducted by experienced professionals in the fields of construction and project management. The results show that a standard WBS for urban drainage projects consists of six levels: project level, work group, work type, work package, work activity, and resources, including materials, equipment, and labor. Furthermore, of the 71 risk variables identified from the literature and previous studies, 61 risk variables were validated by experts as variables that impact project schedule performance. These validated risks were then integrated into the relevant WBS elements. This study is used as a guideline for project planning and control to improve schedule performance and support more effective project implementation.
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