13. Which treatment below can be used to reduce the differential settlement of shallow foundation?
A. adopting box foundation;
B. arranging pile foundation;
C. decreasing the stiffness of the foundation;
D. adopting unreinforced spread foundation
14. For which kind of soil below, ground settlement could take long term to complete?
A. cohesive clay;
B. granite rock;
C. sandy soil;
D. limestone rock
15. Which equation below can be used to determine the deflection of pile top based on the deflection of the pile cap?
A. physical equations;
C. continuity equations;
B. constitutive equations;
D. force equilibrium equations