In a certain sea shore, the height of a retaining wall with smooth vertical back is 4.4 m. The foundation is over an expansive collapsible soil and has a horizontal surface at the level of the top of the wall and carries a udl of 197 kPa. The unit weight and angle of internal friction are 19 kN/m3and 30°, respectively. What is the nearest magnitude of the total active pressure per metre length of this sea shore wall?

In a certain sea shore, the height of a retaining wall with smooth ver

1.	In a certain sea shore, the height of a retaining wall with smooth vertical back is 4.4 m. The foundation is over an expansive collapsible soil and has a horizontal surface at the level of the top of the wall and carries a udl of 197 kPa. The unit weight and angle of internal friction are 19 kN/m3and 30°, respectively. What is the nearest magnitude of the total active pressure per metre length of this sea shore wall?
A.	270 kN/m
B.	360 kN/m
C.	450 kN/m
D.	640 kN/m
Answer» C. 450 kN/m

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