CALIFORNIA STATE UNIVERSITY, LONG BEACHDepartment of Civil Engineering and Construction Engineering managementCEM 425First Midterm ExamSOLVE8QUESTIONS ONLY1.Define traficability. List two methods to improve poor traficability onconstruction sites.2.Describe the construction process of the ditch and sump dewateringsystem. 3.List the major components of the well-point dewatering system. Describethe installation process of this system. 4.Describe the difference between the principles of operation of pre-drainage and cut–off dewatering systems.5.Describe the stages of failure in cohesive soils.