The construction industry represents a major factor in the development 
of countries. And since it has a great impact on the livelihood and wellbeing of mankind, there was an urgent need to use better sophisticated 
methodsto improve the efficiency of this industry.
And since there is a great importance to finish the project construction 
operations within the specified period of time, it was necessary to
choose modern methods to solve this problem. It was also necessary to
know the factors affecting the time, and try to make those factors work 
better by using that modern method. One of these factors which affect 
time is risk management, which will be studied in the research.
Building information modeling is considered as a modern and advanced 
method that has been applied in many countries to improve the
efficiency of construction operations. As it has a great impact on time
management for projects through the fourth dimension (4D).Also BIM 
can be used as a complete and integrated system in the construction 
processes, which leads to improved risk management for the project, and 
thus improved time management for the project. Thus, this research work is concerned with studying two departments of 
the projects, namely, time and risk management. It also explains the
relationship between them and how risk management affects time
management, and then studies how BIM is used in these two
managements to improve them.
In addition, practical studies are carried out on projects in which 
BIM has been used, and a comparison is made between the effect of
BIM methods and regular methods on project time.