Presentation of interpretive structural model for claim management in the construction projects

Claim management is one of the most important and challenging issue in projects in the world, and many of stakeholders of projects belive that the claims are one of the most destroyer in constraction industry.
Growth of claims in construction projects has an inverse correlation with triangular goals of project management (time, cost and quality), so increasing claims cause extension of time and cost and decrease in project quality.
Claims are natural trait in construction industry. However we can’t remove contingency of this claims but we can, by identify main causes of claims and relation between them, prevent from contingency them in future projects.In this research, research data have been collected by literature review studies and interview with expert was conducted to identify the 34 causes of claims in construction projects.Then these causes by questionnaire in cluding frequency and intensity of impactwere distributed among experts.Then according to the result of this questionnairesthe most important causes of claim in construction projects are determined that they are contained 10 causes.a model for relationship between causes of claim in construction projects has designed byInterpretive structural modeling.At the end some suggestions has been presented to prevent the claim or to manage them. These corrective solutions have been presented base on model in 4 stage in procedure of project.
research results show that between claims causes, these causes: selecting contractor on base low price without notice to qualification and technical ability, ambiguities in contract documents and clauses, unexpected change in exchange and interest and low price of contract due to high competition, have a significant effect and impressment on other causes, so they play important roles in preventing or decreasing claims.