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A group pile in clay is shown in the figure below. Determine the maximum vertical load...
The figure below shows a group of pile in clay. Determinate the consolidation settlement of the...
The figure below shows a group of pile in clay. Determinate the consolidation settlement of the group. 1335 IN Sand Groundwatery=15.72 kN/m table Sand Y -18.55 N/m 2.75 m x 2.75 m Group plan Normally consolidated clay 19.18 kNm 08 C=0.8 Normally consolidated clay 2y=18.08 Nm . 1.0 C -0.31 Normally consolidated clay Sy =19.5 kN/m 0.7 C 0.26
Question-5 (20%): If a rectangular foundation of a dimension 1 X 1m with a load equal...
Question-5 (20%): If a rectangular foundation of a dimension 1 X 1m with a load equal to 200 kN is placed at Im below the ground level as shown in the figure below. Calculate the maximum elastic settlement and settlement caused by primary consolidation due to the imposed load knowing that the clay is normally consolidated clay Ground level Es (kN/m2) 10000 Yd = 15 kN/m3 3m 5m Sand B000 Hs =0.3 2m Cc = 0.3 Ysat = 20 kN/m...
6. (a) In piling technology, explain the difference between a "displacement pile" and (2 marks) a "non-displacement pile". (b) Using graph paper, sketch 3 curves illustrating typical...
6. (a) In piling technology, explain the difference between a "displacement pile" and (2 marks) a "non-displacement pile". (b) Using graph paper, sketch 3 curves illustrating typical trends of variation of pile head resistance, shaft resistance and base resistance with increasing settlement, as expected from load testing a CFA pile in clay. Explain the differences between the three curves (6 marks) (c) A bored cast in-situ pile of 0.6 m diameter by 10 m long is installed through a 6...
The time for 50% consolidation of a 25 mm thick clay specimen (drained at top and bottom) in the laboratory is 1...
The time for 50% consolidation of a 25 mm thick clay specimen (drained at top and bottom) in the laboratory is 150 sec. How long (in days) will it take for a 3 m thick layer of the same clay in the field under the same pressure increment to reach 75% consolidation? There is an impermeable shale layer at the bottom of the clay layer in the field I. 2. Use Figure 1 for the following Compute the vertical effective...
help with problems 1 & 2 please and explain Problem 1 A deposit of Swedish clay...
help with problems 1 & 2 please and explain
Problem 1 A deposit of Swedish clay is 15 m thick drained at both top and bottom. The coefficient of consolidation for the clay layer was estimated to be 1 x 10 cm/sec from laboratory test. The ultimate consolidation settlement (Sc) was calculated under the applied load in the field and was found 80 cm. Find the following: a) How long would it take for settlement of 40 cm and 70...
Problem 2. [2596] Figure 2 shows a soil profile. The uniformly distributed load on the ground...
Problem 2. [2596] Figure 2 shows a soil profile. The uniformly distributed load on the ground surface is (1) Estimate the primary consolidation settlement of the clay layer due to the application of Ap. (2) If the clay layer is preconsolidated and the average preconsolidation pressure is 80 kPa, what will be the expected primary consolidation settlement if the recompression index is C 0.2 x Cc? p 87 kPa 1 m Dry Sand Sand: Saturated Sand Dry Unit weight: 14.6...
g=9.81m/s^2 When it say "preconsolidated under vertical effective stress of 130 kPa", this means that the...
g=9.81m/s^2
When it say "preconsolidated under vertical effective stress of
130 kPa", this means that the preconsolidation pressure at the
centre of the clay layer is 130 kPa, NOT that 130 kPa was applied
as a surcharge at the surface.
In the following questions, you do not need to divide the clay layer into multiple layers to calculate the consolidation settlement. Asume the clay to be only one layer q 50 kN/m2 3.0 m dry WT Sand: Ysat 1k -17...
Net load Problem 1: With the foundation load of 500 kips given, determine: a) the average stress ...
net load Problem 1: With the foundation load of 500 kips given, determine: a) the average stress increase in the clay layer below the center of the foundation using m&n method Sand 4.5 Groundwater b) Consolidation settlement at Point A and Point B c) Differential Settlement 4 ftx4 ft table Sand sal d) The average degree of consolidation (U%) of Point A when the consolidation settlement is 0.5" ,-I 20 lb/ft3 C0.01 ft /day 10ftCe 0.25 e) Consolidation settlement (St)...
Q1) An oedometer test was performed on a 2 cm thick clay sample drained on both...
Q1) An oedometer test was performed on a 2 cm thick clay sample drained on both sides taken from the mid clay layer shown below , after 10 minutes 50% consolidation is reached. a) How long time in days would the same degree of consolidation(50%) be reached in the field ?. b) How much the Final settlement would be reached in the clay layer.? c) How much the preconsolidation pressure of a specimen. ? 3m 2m Sand surcharge Y= 17...
1. An 8-m thick normally consolidated clay layer is doubly drained as shown below. (This means...
1. An 8-m thick normally consolidated clay layer is doubly drained as shown below. (This means that a very pervious layer compared to the clay exists on top of and under the clay layer) The embankment applied an average vertical stress increase of 100 kPa to the clay layer. The water table is located at the mid depth of the sand layer. Assume the sand above the water table is dry 0 Pore water pressure, u (kPa) 20 40 60...
The figure below shows a group of pile in clay. Determinate the consolidation settlement of the group. 1335 IN Sand Groundwatery=15.72 kN/m table Sand Y -18.55 N/m 2.75 m x 2.75 m Group plan Normally consolidated clay 19.18 kNm 08 C=0.8 Normally consolidated clay 2y=18.08 Nm . 1.0 C -0.31 Normally consolidated clay Sy =19.5 kN/m 0.7 C 0.26
Question-5 (20%): If a rectangular foundation of a dimension 1 X 1m with a load equal to 200 kN is placed at Im below the ground level as shown in the figure below. Calculate the maximum elastic settlement and settlement caused by primary consolidation due to the imposed load knowing that the clay is normally consolidated clay Ground level Es (kN/m2) 10000 Yd = 15 kN/m3 3m 5m Sand B000 Hs =0.3 2m Cc = 0.3 Ysat = 20 kN/m...
6. (a) In piling technology, explain the difference between a "displacement pile" and (2 marks) a "non-displacement pile". (b) Using graph paper, sketch 3 curves illustrating typical trends of variation of pile head resistance, shaft resistance and base resistance with increasing settlement, as expected from load testing a CFA pile in clay. Explain the differences between the three curves (6 marks) (c) A bored cast in-situ pile of 0.6 m diameter by 10 m long is installed through a 6...
The time for 50% consolidation of a 25 mm thick clay specimen (drained at top and bottom) in the laboratory is 150 sec. How long (in days) will it take for a 3 m thick layer of the same clay in the field under the same pressure increment to reach 75% consolidation? There is an impermeable shale layer at the bottom of the clay layer in the field I. 2. Use Figure 1 for the following Compute the vertical effective...
help with problems 1 & 2 please and explain
Problem 1 A deposit of Swedish clay is 15 m thick drained at both top and bottom. The coefficient of consolidation for the clay layer was estimated to be 1 x 10 cm/sec from laboratory test. The ultimate consolidation settlement (Sc) was calculated under the applied load in the field and was found 80 cm. Find the following: a) How long would it take for settlement of 40 cm and 70...
Problem 2. [2596] Figure 2 shows a soil profile. The uniformly distributed load on the ground surface is (1) Estimate the primary consolidation settlement of the clay layer due to the application of Ap. (2) If the clay layer is preconsolidated and the average preconsolidation pressure is 80 kPa, what will be the expected primary consolidation settlement if the recompression index is C 0.2 x Cc? p 87 kPa 1 m Dry Sand Sand: Saturated Sand Dry Unit weight: 14.6...
g=9.81m/s^2
When it say "preconsolidated under vertical effective stress of
130 kPa", this means that the preconsolidation pressure at the
centre of the clay layer is 130 kPa, NOT that 130 kPa was applied
as a surcharge at the surface.
In the following questions, you do not need to divide the clay layer into multiple layers to calculate the consolidation settlement. Asume the clay to be only one layer q 50 kN/m2 3.0 m dry WT Sand: Ysat 1k -17...
net load Problem 1: With the foundation load of 500 kips given, determine: a) the average stress increase in the clay layer below the center of the foundation using m&n method Sand 4.5 Groundwater b) Consolidation settlement at Point A and Point B c) Differential Settlement 4 ftx4 ft table Sand sal d) The average degree of consolidation (U%) of Point A when the consolidation settlement is 0.5" ,-I 20 lb/ft3 C0.01 ft /day 10ftCe 0.25 e) Consolidation settlement (St)...
Q1) An oedometer test was performed on a 2 cm thick clay sample drained on both sides taken from the mid clay layer shown below , after 10 minutes 50% consolidation is reached. a) How long time in days would the same degree of consolidation(50%) be reached in the field ?. b) How much the Final settlement would be reached in the clay layer.? c) How much the preconsolidation pressure of a specimen. ? 3m 2m Sand surcharge Y= 17...
1. An 8-m thick normally consolidated clay layer is doubly drained as shown below. (This means that a very pervious layer compared to the clay exists on top of and under the clay layer) The embankment applied an average vertical stress increase of 100 kPa to the clay layer. The water table is located at the mid depth of the sand layer. Assume the sand above the water table is dry 0 Pore water pressure, u (kPa) 20 40 60...
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