The occurrence of a delay in the construction project is a common problem in civil engineering. There is an increase in the number of construction projects experiencing extensive delays leading to exceeding the initial time and cost budget. The delay is a situation where the actual progress of a construction project is slower than the planned schedule. This paper presents a major construction delay caused by rank order retrieved from past literature by analyzing several negative effects. Even though over the years, existing delay analysis techniques (DATs) for aiding this decision-making have been helpful but have not succeeded in curbing the high incidence of disputes associated with delay claims resolutions and a major source of the disputes lies with the limitations and capabilities of the techniques in their practical use. Developing a good knowledge of these aspects of the techniques is of paramount importance in understanding the real problematic issues involved and their improvement needs. So analyzing all the data’s over a decade this paper seeks to develop such knowledge and understanding. Thus this paper presents a major construction delay caused by rank order retrieved from past literature. It is followed by collecting a list of factors that cause the delay in a construction project. The collected factors are analyzed categorized into groups with ranking. A scheduling model of the apartment building is developed using MS-Project. To develop delay factors influencing in the model. As a result, the comparison between actual schedule progress and factors influencing the schedule are determined. From the study, the unforced delay is identified, so that that delay can be considered in the developing of any future construction scheduling work.