1. Solve and show solution. 1.A square footing of dimensions 3 m x 3m carries a column load of 3500 KN resting on the sand layer having2.4 m thick measured from the top most part of the footing. The footing has a thickness of 0.60 meter. Thewater table is loacted 0.60 meter below the bottom of the footing. The unit weight of sand above the watertable is 17.31 KN/m³ and has a saturated unit weight ofKN/m³ below the water table. The sandoverlies a clay layer 1.2 meters thick having a saturated unit weight of 16.50 KN/m³ and a void ratio of 1.70.Compression index due to pre-consolidation pressure, Cs = 0.07 while Cc = 0.35 respectively. Assuming avertical stress distribution of 2 vertical to 1 horizontal;1.1.1.2.1.3.Calculate the pre-consolidation pressure if the overconsolidation ratio is 2.0.a. 86.29 Kpab. 47.30 Kpac. 52.64 Kpad. 69.46 KpaSolve the total effective stress at the midheight of the clay layer.a120.03 Kpab. 138.65 Kpac. 154.76 KpaCalculate the settlement due to the consolidation of the clay layer which is overconsolidated.A. 63.48 mmb. 38.24 mmc. 40.25 mmd. 59.47 mmd. 34.73 Kpa

Given: Required : Preconsolidation pressure Total effective stress at mid height of clay layer…

1. A square footing of dimensions 3 m x 3m carries a column load of 3500 KN resting on the sand layer having 2.4 m thick measured from the top most part of the footing. The footing has a thickness of 0.60 meter The water table is loacted 0.60 meter below the bottom of the footing. The unit weight of sand above the water table is 17.31 KN/m² and has a saturated unit weight of 18.10 KN/m³ below the water table. The sand Compression index due to pre-consolidation pressure, Cs = 0.07 while Cc = 0.35 respectively. Assuming a vertical stress distribution of 2 vertical to 1 horizontal; 1.1. 1.2. 1.3. Calculate the pre-consolidation pressure if the overconsolidation ratio is 2.0. a. 86.29 Kpa b. 47.30 Kpa d. 69.46 Kpa Solve the total effective stress at the midheight of the clay layer. c. 52.64 Kpa a. 120.03 Kpa b. 138.65 Kpa c. 154.76 Kpa d. 34.73 Kpa Calculate the settlement due to the consolidation of the clay layer which is overconsolidated. A. 63.48 mm b. 38.24 mm c. 40.25 mm d. 59.47 mm

1. A square footing of dimensions 3 m x 3m carries a column load of 3500 KN resting on the sand layer having 2.4 m thick measured from the top most part of the footing. The footing has a thickness of 0.60 meter The water table is loacted 0.60 meter below the bottom of the footing. The unit weight of sand above the water table is 17.31 KN/m² and has a saturated unit weight of 18.10 KN/m³ below the water table. The sand Compression index due to pre-consolidation pressure, Cs = 0.07 while Cc = 0.35 respectively. Assuming a vertical stress distribution of 2 vertical to 1 horizontal; 1.1. 1.2. 1.3. Calculate the pre-consolidation pressure if the overconsolidation ratio is 2.0. a. 86.29 Kpa b. 47.30 Kpa d. 69.46 Kpa Solve the total effective stress at the midheight of the clay layer. c. 52.64 Kpa a. 120.03 Kpa b. 138.65 Kpa c. 154.76 Kpa d. 34.73 Kpa Calculate the settlement due to the consolidation of the clay layer which is overconsolidated. A. 63.48 mm b. 38.24 mm c. 40.25 mm d. 59.47 mm

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Mat Foundations

Section: Chapter Questions

Problem 10.8P

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