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CALIFORNIA STATE UNIVERSITY, LONG BEACHDepartment of Civil Engineering and Construction Engineering managementProfessor:Dr. ShehabCEM 324Exam # 1CLOSED BOOK/NOTES SOLVE 5QUESTIONS ONLYQ1- What is the main purpose of spread foundations. Q2-Describe, briefly, the frost-heave phenomenon. How could you reduce thenegative impacts of this phenomenon. Q3-Explain the purpose of dowels in shallow foundations. Q4- Explain the difference between single and double action pile hammers.