Following are the results of a laboratory consolidation test on a soil specimen obtained from the field: Dry mass of specimen = 128g, height of specimen at the beginning of the test = 2.54cm, G3= 2.75, and area of the specimen = 30.68 cm². Effective pressure, o' (kN/m²) Final height of specimen at the end of consolidation (cm) 2.540 50 2.488 100 2.465 200 2.431 400 2.389 800 2.324 1600 2.225 3200 2.115 Plot the e-log o' curve. b. Determine the pre-consolidation pressure. а. с. Calculate the compression index, Cc.

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A: Plot the graph.

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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.