عنوان مقاله [English]
In the most of projects, there is a possibility of claim occurrence between both contract sides especially by contractors. These claims negatively affect project utilization but can be prevented by perception of main causes of occurrence. In this regard, authors gathered 250 reasons related to claim in underground design-Build projects. After analyzing of these reasons, closed questionnaires including frequency and intensity of impact in three levels (first level consists of 5 groups, second level consists of 16 groups and third one including 43 groups) were prepared and distributed through relevant parts who are active in different sectors of underground projects. Then according to the result of this questionnaires the most important Causes of claims were determined.
Growth of claims in construction projects has an inverse correlation with triangular goals of project management (time, cost and quality). In the one hand, the need for faster utilization of a project has caused using design-build method. In the other hand, lack of enough knowledge of design-build method in Iran makes claims occurrence inevitable, especially in underground projects that have a complex nature. If the factors of claim occurrence can be recognized, it might be a preventable issue. In this paper, the most important causes of claims in underground design-build projects have been studied and analyzed.
Methodology and Approaches
In this research, qualitative and quantitative data have been collected by literature review studies, conducting semi-structured interview with experts and examination of documents relevant to real claims of some underground design-build projects. After analysis of these cases, closed questionnaires were prepared and according to the completed questionnaires, claim causes base on importance criteria in underground design-build projects were determined.
Results and Conclusions
It is showed that, If causes considered before starting a project, claim occurrence and its subsequent future conflicts can be prevented. In addition, non-technical factors such as claims should have a similar degree of importance as technical factors in underground design-build projects.