4. A square footing having a dimension of 3 m x 3 m carries an axial load of 1500 kN. The bottom of the footing is 2 m from the ground surface consisting of a layer of sand overlying a 4 m laye of clay. The water table is located 2 m below the ground surface. Dry unit weight of sand = 16.5 kN/m³ Saturated unit weight of clay = 20 kN/m³ Void ratio of clay = 0.80 Liquid limit of clay = 50% Compute the increase in vertical pressure. Compute the overburden pressure (effective pressure) at the midpoint of clay. c. Compute the primary consolidation settlement. 8 a. b. 2m 4m Sand 1500 KN 3m x 3 m Clay (normally consolidated) Ya = 16.5 kN/m' 7sat = 20 kNm³ e = 0.80 LL = 50

4. A square footing having a dimension of 3 m x 3 m carries an axial load of 1500 kN. The bottom of the footing is 2 m from the ground surface consisting of a layer of sand overlying a 4 m laye of clay. The water table is located 2 m below the ground surface. Dry unit weight of sand = 16.5 kN/m³ Saturated unit weight of clay = 20 kN/m³ Void ratio of clay = 0.80 Liquid limit of clay = 50% Compute the increase in vertical pressure. Compute the overburden pressure (effective pressure) at the midpoint of clay. c. Compute the primary consolidation settlement. 8 a. b. 2m 4m Sand 1500 KN 3m x 3 m Clay (normally consolidated) Ya = 16.5 kN/m' 7sat = 20 kNm³ e = 0.80 LL = 50

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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绘图编辑 3.12 For a strip foundation, the width is 1.2m, buried depth is 1.2m, the standard value of the load applied on the foundation F=155KN/m, the soil layer is distributed as follows: from the ground to the depth of 1.2m is the land fill, =18KN/m³; the depth in the range of 1.2~1.8m is silty clay, fak=155kPa, E,=8.1Mpa, y=19KN/m³; below the depth of 1.8m is the mucky clay, fak=102kPa, E,=2.7Mpa. Try to check the base pressure and the bearing capacity of the weak sub-layer. Ground F=155KN/m OLand fill 18KN/m³ 1.2m O Silty clay La-155kPa;E-8.1Mpa;y-19KN/m³ -0, 1.0 O Mucky clay -0, H1.0 Sak-102kPa;E,-2.7Mpa 1.2m
Exl: A footing is uniformly loaded with q = 100 kN/m² as shown in the figure. Compute the vertical stress increments under Points A, B, at z = 10 m. 13.5 m 7.0 m Footing 12 m (Plane view) 6.0 m
A
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A footing 3 m x 3 m is supporting a concentric load of 1100 kN. Calculate the settlement in mm of the layer of clay considering the preconsolidation. CHOICES A. 8.37 mm B. 6.12 mm C. 7.28 mm D. 5.56 mm
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