Q2- An oil storage tank 19 m in diameter is located 2.5 m below the surface of a deposit of clay 15 m thick, the water table being at the surface, the net foundation pressure is 290 kN/m². A firm stratum underlies the clay. The average value of m, for the clay is 0.16 m³/MN and the Poisson's ratio is 0.31. The value of Young's Modulus is 41.5 MN/m². Determine the total settlement under the center of the tank. Consider the clay as one layer as less than2-om thick)-

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Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.