c) Figure Q4(c) shows a 5.0 m high gravity retaining wall. The properties of concrete and soil are as follows: Concrete

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C Figure Q4 C Shows A 5 0 M High Gravity Retaining Wall The Properties Of Concrete And Soil Are As Follows Concrete 1 (47.51 KiB) Viewed 34 times

c) Figure Q4(c) shows a 5.0 m high gravity retaining wall. The properties of concrete and soil are as follows: Concrete Unit weight = 24 kN/m³, friction angle at base (ō) =30⁰, Dry soil Unit weight = 18 kN/m³, friction angle (ø) =28°, cohesion (c') = 0 kN/m² Limiting factors of safety for sliding and overturning is 2.0 respectively. Analyse all the horizontal forces and the frictional force between base of the wall and soil. (CO2:PO3)(C4) (10 marks) Evaluate the stability of the proposed wall against sliding and overturning as the wall is considered safe from deep seated shear failure and bearing capacity failure. The point of rotation is assumed to be at the toe of the wall, A. (CO2:PO3)(C4) i) ii) A 0.5 m Concrete 8 = 30° y= 24 kN/m³ 4.0 m c' = 0 kN/m² 0' = 28⁰ 5.0 m y = 18 kN/m³ Dry soil Figure Q4(c) (8 marks)