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Figure below shows a 2 m deep still pond, overlying 10 m thick silty clay, and 2 m thick sand layers. Due to a traffic accident, a truck, which was transporting red paint, spilled its load into the pond. The paint immediately changed the color of the pond to red. Luckily, a piezometer was installed at the interface between silty clay and sand layers, indicating a ground water level at 1 m below the pond water elevation. If one-dimensional steady state seepage assumptions are valid, answer the following questions: Pond (water) 1m 2 m Ywater - 10 kN/m? 5m 10 m Silty Clay x -----A. --* = 18 kN/m' kunytay ▪ 1x10“ m/s n=0.3 Sand 2 m Permeable Rock Layer a) Estimate the hydraulic gradient, i, in the silty clay layer. b) Estimate the flow rate, q, in the silty clay layer, per unit square meter of cross sectional area (i.e.: A= 1 m'). c) With reference to the datum selected as X-X, estimate the total head at point A. d) Estimate the effective vertical stress a'v at point A by using total stress and pore pressure method.

Figure below shows a 2 m deep still pond, overlying 10 m thick silty clay, and 2 m thick sand layers. Due to a traffic accident, a truck, which was transporting red paint, spilled its load into the pond. The paint immediately changed the color of the pond to red. Luckily, a piezometer was installed at the interface between silty clay and sand layers, indicating a ground water level at 1 m below the pond water elevation. If one-dimensional steady state seepage assumptions are valid, answer the following questions: Pond (water) 1m 2 m Ywater - 10 kN/m? 5m 10 m Silty Clay x -----A. --* = 18 kN/m' kunytay ▪ 1x10“ m/s n=0.3 Sand 2 m Permeable Rock Layer a) Estimate the hydraulic gradient, i, in the silty clay layer. b) Estimate the flow rate, q, in the silty clay layer, per unit square meter of cross sectional area (i.e.: A= 1 m'). c) With reference to the datum selected as X-X, estimate the total head at point A. d) Estimate the effective vertical stress a'v at point A by using total stress and pore pressure method.

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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Figure below shows a 2 m deep still pond, overlying 10 m thick silty clay, and 2 m thick sand layers. Due to a traffic accident, a truck, which was transporting red paint, spilled its load into the pond. The paint immediately changed the color of the pond to red. Luckily, a piezometer was installed at the interface between silty clay and sand layers, indicating a ground water level at 1 m below the pond water elevation. If one-dimensional steady state seepage assumptions are valid, answer the following questions: Pond (water) 1m 2 m Ywater = 10 kN/m? 5m JA. 10 m Silty Clay 7 = 18 kN/m? kayday = 1x10* m/s n=0.3 Sand 2 m Permeable Rock Layer a) Estimate the hydraulic gradient, i, in the silty clay layer. b) Estimate the flow rate, q, in the silty clay layer, per unit square meter of cross sectional area (i.e.: A= 1 m³). c) With reference to the datum selected as X-X, estimate the total head at point A. d) Estimate the effective vertical stress o'v at point A by using total stress and pore pressure method.
Transcribed Image Text:Figure below shows a 2 m deep still pond, overlying 10 m thick silty clay, and 2 m thick sand layers. Due to a traffic accident, a truck, which was transporting red paint, spilled its load into the pond. The paint immediately changed the color of the pond to red. Luckily, a piezometer was installed at the interface between silty clay and sand layers, indicating a ground water level at 1 m below the pond water elevation. If one-dimensional steady state seepage assumptions are valid, answer the following questions: Pond (water) 1m 2 m Ywater = 10 kN/m? 5m JA. 10 m Silty Clay 7 = 18 kN/m? kayday = 1x10* m/s n=0.3 Sand 2 m Permeable Rock Layer a) Estimate the hydraulic gradient, i, in the silty clay layer. b) Estimate the flow rate, q, in the silty clay layer, per unit square meter of cross sectional area (i.e.: A= 1 m³). c) With reference to the datum selected as X-X, estimate the total head at point A. d) Estimate the effective vertical stress o'v at point A by using total stress and pore pressure method.
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