Question

A retaining wall 30 m high was designed to stabilize a horizontal ground surface.

The back of the wall is inclined 15 degrees to the vertical direction and can be assumed rough with interface friction angle of 30 degrees.

(a) Draw a diagram to show the given wall dimensions, relevant inclinations, and the direction of the active force on the wall.

(b) Calculate the lateral force on the wall assuming the groundwater table is at the base of the wall.

(c) After a flood, the groundwater table rises 0.5m above the wall top surface. Calculate the lateral force on the wall after the flood.

(d) If the weight of the wall is (530) kN/m, is the wall safe against sliding after flooding event? Please show your calculations.

Answer 1

ANSWER:-----

LATERAL FORCE:--- The force that acts in the direction parallel to ground and perpendicular to the direction of gravitational pull of earth is known as lateral forces.

FACTOR OF SAFETY:-----  The ratio of a structure's absolute strength (structural capability) to actual applied load; this is a measure of the reliability of a particular design.