Delays in construction projects are unavoidable and may result in disputes, lawsuits, claims between different parties
and adversely affect project success in terms of time, quality and cost. The purpose of this paper is to analyse the causes of delays
in the completion of construction projects due to the failure of the owner, consultant and contractor during the construction
phase. This study presents a framework for the causes of delays in a construction project using Student’s T-test and the value
proposition (RII) method. To this end, a questionnaire has been compiled after identifying 35 factors of delay, through a detailed
book review process and discussions with experts from the construction industry. In this study, the reliability of the
questionnaire was assessed using Cronbach's alpha, which is widely used to show internal data consistency. The level of items
and groups shown is based on their level of importance in the delay.
