Evaluation of Project Scheduling and Control for the Construction of Four Storey Apartment Using Critical Chain Project Management (CCPM)

Yanuar Aji Pradana, Yenny Nurchasanah, Mochamad Solikin, Senja Rum Harnaeni

Abstract


The development of the education infrastructure sector in Indonesia faces significant challenges where 78% of construction project delays are caused by student's syndrome and ineffective buffer time allocation. The Critical Path Method (CPM), which has long been the standard for construction project scheduling, has proven to be less efficient because it overlooks productivity factors, resource limitations, and human factor issues such as multitasking and Parkinson's Law, and tends to allocate excessive buffer time to each activity. This study aims to evaluate the effectiveness of the Critical Chain Project Management (CCPM) method as an alternative to the Critical Path Method (CPM) in optimizing the scheduling and control of educational facility construction projects. The research was conducted through a case study on the construction of the Muallimin Muhammadiyah Islamic Boarding School Dormitory by reorganizing the optimal schedule, performing critical chain analysis, calculating strategic buffers, and evaluating the optimized schedule and budget percentages. CCPM applies a different approach from conventional methods by eliminating contingency time on each activity and replacing it with a buffer centralized at the end of the critical path. The research results show that the implementation of CCPM successfully optimized the project schedule by reducing the duration from 240 working days to 205 working days (14.6% more efficient) through a cut and paste approach with a 50% duration reduction and the addition of an RSEM buffer. Cost efficiency of Rp 2,410,931,721.07 or equivalent to 22.12% was also achieved due to the reduction in daily labor costs. This finding proves that CCPM can overcome the weaknesses of CPM and become a superior method in handling resource conflicts and deterministic durations, thereby resulting in more optimal time planning and resource utilization for national infrastructure development.

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References


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