Delay Analysis Under Multiple Baseline Updates

Delays are one of the biggest problems construction firms face. The most common delay analysis techniques include as-planned versus as-built, impacted as-planned, collapsed as-built or but-for, and windows analysis. Although the windows analysis is the technique most often used, it may yield inconsistent results and still has serious drawbacks This study presents a delay analysis approach that overcomes the above limitations. The proposed approach considers multiple baseline updates and accurately apportions delays and accelerations among project parties. A systematic procedure for the proposed approach is also developed in order to facilitate its computer implementation. The proposed method offers legible representation of schedule events and powerful ability to provide accurate and traceable results. Experimenting with the developed method on actual projects with delay situations is currently ongoing. Interested researchers and practitioners can download and experiment with the EasyPlan prototype.