You work as an engineering consultant and are asked to prove that you can place

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You work as an engineering consultant and are asked to prove that you can place a water storage tank under a small home and still have a safety factor of 5 on the concrete. If the diameter is 8 meters and wall thickness is 10 cm, determine the principal stresses. a. Determine the principal stresses at the bottom of the tank on the curved surface if you assume that this is a pressure vessel with an internal pressure of 120kPa and a downward compressive loading of 5000kN. (assume you only have the axial stress due to compressive load and the angular stress due to pressure, no axial due to pressure in this case.) b. Determine the safety factor using Coulomb-Mohr if sigma_u = 10 MPa, sigma'_u = 20 MPa,

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