A circular foundation of diameter 8 m supports a tank. The base of the foundations of 1 m below the ground surface. The vertical load is 20 MN. The tank foundation is supported by a soil with undrained shear strength equal to 80 kPa and saturated unit weight of 19 kN/m², dry unit weight of 17.6 kN/m² and angle of internal friction equal to 25. Ground water table is 4 meters below the surface and assumed to be stable. Fourteen months after the tank was constructed during a week of intense rainfall, the foundation failed. It was speculated that failure occured by bearing capacity failure. Clarify whether this is so or not.
A circular foundation of diameter 8 m supports a tank. The base of the foundations of 1 m below the ground surface. The vertical load is 20 MN. The tank foundation is supported by a soil with undrained shear strength equal to 80 kPa and saturated unit weight of 19 kN/m², dry unit weight of 17.6 kN/m² and angle of internal friction equal to 25. Ground water table is 4 meters below the surface and assumed to be stable. Fourteen months after the tank was constructed during a week of intense rainfall, the foundation failed. It was speculated that failure occured by bearing capacity failure. Clarify whether this is so or not.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A circular foundation of diameter 8 m supports a tank. The base of the foundations of 1 m below the ground surface. The vertical load is 20 MN. The tank foundation is supported by a soil with undrained shear strength equal to 80 kPa and saturated unit weight of 19 kN/m², dry unit weight of 17.6 kN/m² and angle of internal friction equal to 25. Ground water table is 4 meters below the surface and assumed to be stable. Fourteen months after the tank was constructed
during a week of intense rainfall, the foundation failed. It was speculated that
failure occured by bearing capacity failure. Clarify whether this is so or not.
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