An analysis of the significance of factors affecting the quality of road construction projects in subdistrict administration organizations using fault tree analysis
Abstract:
The objective of the research is to analyze the factors, and their significance levels, which affect the quality of road construction projects in subdistrict administration organizations (SAO.) The methodology consists of collecting and studying literature review concerning SAO, quality and deterioration characteristics of roads. The next step is to collect problems and causes in road construction SAO projects from literature reviews and interviews. The causes of problems which affect the quality of road construction projects are analyzed using Fault Tree Analysis. The probabilities of occurrences of the causes are collected by using questionnaires. Finally the significance of causes or factors affecting quality of road construction projects is analyzed quantitatively by using Fault Tree Analysis. The result reveals that there are 43 basic events and 185 minimal cut sets which consist of 15 double minimal cut sets and 170 triple minimal cut sets. In analyzing the significance of factors affecting the quality of road construction projects, it was found that the first five significant factors are lack of people who is responsible to control road utilization and improper behavior of road utilization by users, lack of standard equipment in surveying process, limitation of time in surveying process, insufficiency of budget in surveying process, and insufficiency of personnel in surveying process, respectively