Reducing machinery repair costs with PM techniques and enhancing competitiveness in the road construction project management with CPM technique A case study of ABC limited partnership

Abstract

    This independent study endeavors to mitigate machinery maintenance expenses and submission the road construction project on time within budget, thereby ensuring timely project completion. Prior to the renovation, persistent machinery malfunctions were identified in road construction equipment, which had not been addressed, leading to significant operational disruptions and delays. Upon investigation and analysis of the escalating costs, several contributing factors were identified, including: 1) inadequate supervision of equipment usage, 2) irregular inspection protocols, and 3) prolonged utilization of aging machinery. The presence of these issues posed a substantial risk to project timelines, overall cost, and client satisfaction. To address these challenges, the researcher implemented a proactive approach through preventive maintenance and critical path method practices. Preventive maintenance collects data only on machines used in asphalt work, including asphalt paver, rubber tired roller, vibratory road roller, water spray truck, and rubber spray truck. As for the administration using the CPM technique, only one road construction project with the highest fines will be chosen to test, with costs and duration being indicators of the success of the research. Following a rigorous testing period spanning three months, significant progress was achieved, with a 38.09% reduction in machine-related issues and a consequent decrease in the need for external equipment rentals. These findings underscore the efficacy of preventive maintenance strategies in enhancing operational efficiency and cost-effectiveness in construction projects. In addition, the construction project management with CPM technique that the organization will not be penalized for late submission of work and also reduced the cost of fines in the amount of 43,930 baht, or 58.87 percent.