TYPES, CAUSES, AND EFFECTS OF DEFECTIVE CONSTRUCTION WORKS

Reviews of performance after construction completion is an important task for enhancing the sustainability of engineering solutions for social needs. This research reviewed and investigated defects in some construction projects of a university. The article analyzed types, causes, and effects of defects in terms of both time and cost dimensions. It collected data through the investigation of how completion certificates and contract documents are issued. It also gathered information on the causes of defects by interviewing project supervisors and those involved projects. The result showed that the majority of defects were in the architectural work, accounting for 57.1% of the total. The chance of having defects depends on the type of project. The main causes were foremen, workers, and working procedures. In the defective projects, defects caused delay in obtaining payment, averaging approximately 26 days. Defects also caused cost increases, averaging 3.3% of the initial contract value. These findings are vital for the construction department of the university to continuously improve and find more sustainable solutions in monitoring and supervising construction projects, so that fewer defects occur.