Analisis Faktor Penyebab Pembengkakan Biaya Konstruksi (Cost Overrun) pada Proyek Konstruksi di Kota Medan

Abstract

The implementation of construction projects in the Medan City area cannot be separated from the risk of cost overruns of construction projects, both internal and external factors, so it is important to carry out an analysis of these factors to anticipate cost overruns that are detrimental to project implementation. This research aims to analyze the factors causing cost overruns in construction projects using the one way ANOVA (analysis of variance) method; to analyze the weight values of factors that cause and influence construction cost overruns on construction projects; to analyze the types of construction projects that have a risk of construction cost overruns based on the size and complexity of the project; and to analyze the dominant factors that cause and influence construction cost overruns. This research used quantitative methods, involving 30 respondents using proportionate stratified random sampling from construction service providers in Medan City. Data analysis was carried out using SPSS (Statistical Program for Social Science) version 26, descriptive analysis and one way ANOVA method analysis, Aiken Rater validity test, and reliability test. The research results showed that based on the literature review, 33 factors were identified to become 27 factors, which were grouped into 6 categories. Eleven (11) factors of which are the dominant factors, namely X6 (work errors (rework), X14 (cost planning errors), X20 (poor cost control), (Poor team work ability/productivity), X7 (Implementation time is longer than the planned time (delayed). Based on the respondents' assessment of the results, 5 of the 6 factors were dominant factors. Factors that influence the occurrence of cost overruns are based on: XU1 (project size 1) influencing factors with a project value of ≤2.5m, and In terms of project complexity, the significance value is 0.353 > 0.05. Thus, H0 is rejected and H1 is accepted. This means that the causal factor (X) does not have a significant difference resulting in cost overrun so it can be grouped into dominant or very influential factors. This research suggests that contractors pay attention to dominant factors to avoid cost overruns; and further research is needed that focuses on the magnitude of cost overrun values in construction projects.