Network Planning Analysis on Road Construction Projects by CV. X Using Evaluation Review Technique (PERT)-Critical Path Method (CPM) and Crashing Method

Abstract

Indonesia is currently actively developing infrastructure to improve the economy and welfare of itspeople. One of the infrastructure developments undertaken by the government is road pavement. CV.X is the company that won the asphalt project tender with a contract value of IDR 4.046.873.346 and must complete it within 114 days. During the process of working on the project, there were indications of possible delays in project completion. So this study aims to perform optimal planning, scheduling, and control in CV. X in carrying out road construction project. This study usedthe PERT–CPMmethodto determine the optimal completion time using critical pathways and the concept of probability. The result of thePERT–CPMmethodis an activity in critical flow with an optimal durationof 115 days, where the duration exceeds thecontract period so itneeds to becrashing.Thecrashingmethod is an attempt to speed up the duration of the project and streamline thecosts incurred.In this study, 2scenarioswere obtainedto help reduce the duration and cost savingsthat can be usedby projectimplementers. The first scenario is to reduce the duration based on the optimal duration from 115 daysto 108 days with a saving of IDR690,354or 0,02%. The value of the savings is classified as very small because crashing can only be done with additional laborandlimited working hours. If the crashingmethod is notdone, then the secondscenario is to pay a penalty of IDR40,468,733.