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(d) How long will consolidation settlement take for 50% consolidation to occur in the field if the value of C, = 10 m2/ycar.

(d) How long will consolidation settlement take for 50% consolidation to occur in the field if the value of C, = 10 m2/ycar.

Structural Analysis
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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2. Bascd on the following figure, all layers shown in the figure are fully saturated. The pressure applying from a building to the ground surface is about 900 kPa. Assume Gs = 2.7 for each layer. (a) Determine the cffective stress for a soil element at the middle of each layer. (b) Determine the vertical stress increase at the middle of the clay layer under the center of the foundation (10 mx20 m). (c) Determine the primary consolidation settlement of the clay layer at the center of the foundation if the clay is overconsolidated with an OCR=1.5. (d) How long will consolidation settlement take for 50% consolidation to occur in the field if the value of C, = 10 m2/year. 20 m 10 m 20 m Lightly cemented (calcium carbonate) sand/gravel = 17 kN/m Clay properties: w = 55% C = 0.4 C, = 0.05 20 m 3 m Soft clay 15 m Sand and gravel w=10% Rock
Transcribed Image Text:2. Bascd on the following figure, all layers shown in the figure are fully saturated. The pressure applying from a building to the ground surface is about 900 kPa. Assume Gs = 2.7 for each layer. (a) Determine the cffective stress for a soil element at the middle of each layer. (b) Determine the vertical stress increase at the middle of the clay layer under the center of the foundation (10 mx20 m). (c) Determine the primary consolidation settlement of the clay layer at the center of the foundation if the clay is overconsolidated with an OCR=1.5. (d) How long will consolidation settlement take for 50% consolidation to occur in the field if the value of C, = 10 m2/year. 20 m 10 m 20 m Lightly cemented (calcium carbonate) sand/gravel = 17 kN/m Clay properties: w = 55% C = 0.4 C, = 0.05 20 m 3 m Soft clay 15 m Sand and gravel w=10% Rock
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