Kenar, E.Ipek, M.Dügenci, M.Korkmaz, Ö.A.2024-09-292024-09-2920232149-9144https://doi.org/10.22399/ijcesen.1262975https://search.trdizin.gov.tr/tr/yayin/detay/1182929https://hdl.handle.net/20.500.14619/9057Time is the most precious resource for any business simply because no one can bring time back. Therefore, there is a huge need to be able to control time accurately. Also, the competitiveness between companies increased the value of time. Many investments were allocated to build methodologies that help to use time effectively. Because it became a fact that the speed of work accomplishment is the main factor for being a considerable competitor. Planning for future projects usually relays on non-fixed but mostly expected data. It is more reliable to use fuzzy methods for this situation. In this study, Fuzzy PERT (FPERT) was used as a project management technique to plan the construction of a marble factory from the establishment phase to the plan of the machines that will be used later on. FPERT showed more realistic results than any classical method would. Out of 16 routes, the final result of the completion time was (90.9,122.1,151.9) days which was determined after triangular fuzzy numbers for the activity times in the entire project. This article aims to prove the efficiency of fuzzy methodologies especially FPERT to be conducted in future planned projects through this real-life case study. © IJCESEN.eninfo:eu-repo/semantics/openAccessFuzzy LogicFuzzy PERTPERTProject ManagementArticle10.22399/ijcesen.12629752-s2.0-851889192391322N/A12311829299