Development of a New Delay Analysis Method that Considering Schedule Updates and Resource Over Allocation

Abstract

Due to the inherent risks and increasing complexity of modern construction projects, delays and cost overruns have become common facts in the industry. Researchers and practitioners have used many techniques to assess project delays and apportion delay responsibility among the parties involved. Windows delay analysis has been recognized as one of the most credible techniques for analyzing construction delays. Despite its benefits, windows analysis can produce different results depending on the window size, it does not consider owner and contractor acceleration, it does not systematically consider the impact of several schedule updates made due to changes in the duration and logical relationships of the activities, and it does not consider the impact of the progress events on resource over-allocation and its consequent delays. This study proposes a new schedule analysis model that considers multiple schedule updates and resource over-allocation. The model uses a daily window size in order to consider all fluctuations in the critical path(s) and uses a legible representation of progress information to accurately apportion delays and accelerations among project parties. A simple case study has been demonstrated on the proposed delay analysis model in order to validate its accuracy and usefulness. To facilitate its use, the study has been introduced detailed procedures to make the control process on the scheduling and resource management through the project period is easy process.