EVALUASI PENJADWALAN DAN BIAYA PELAKSANAAN PROYEK REHABILITASI GEDUNG MENGGUNAKAN METODE PERT (Studi Kasus Pada Proyek Rehabilitasi Gedung Kejaksaan Tinggi Kalimantan Tengah)

Arranging project scheduling is an important aspect in construction projects, because scheduling covers all the activities involved in implementing a construction project. The contractor scheduling plan carrying out the rehabilitation of the Central Kalimantan High Prosecutor's Office uses the bar chart method and the "S" curve, so that activities that cannot be postponed or are critical cannot be known. To overcome this, a different method is needed from the choice of project evaluation and review method or PERT. This technique uses an approach that assumes that the duration of the activity depends on many factors and variations, so that in estimating three time periods are used, namely optimistic (a), pessimistic (b) and most likely (m). This research aims to determine the chances of success of a project being completed and the amount of costs required based on the PERT method analysis. The project can be completed with a success rate of 99% within a period of 418 days at a cost of IDR 39,278,989,855 based on the results of analysis using the PERT technique which causes a cost difference between existing costs of IDR 238,964,250. The use of PERT in project planning can achieve the specified deadline with successful effective implementation, thereby reducing the increase in costs due to delays in the future.