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soil mechanics
Q1) An oedometer test was performed on a 2 cm thick clay sample drained...
soil Q1) An oedometer test was performed on a 2 cm thick clay sample drained on...
soil
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...
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...
The oedometer test data below was obtained from a sample of a clay soil when the...
The oedometer test data below was obtained from a sample of a clay soil when the loading increased from 200 to 400 kN/m² (Table Q8a). Table Q8a Time (min) Time (min) 0.00 0.25 1.00 2.25 4.00 Height (mm) 19.600 19.349 19.178 19.008 18.851 18,727 18.643 18.587 Height (mm) 18.555 18.515 18.505 18.497 18.490 18.483 18.477 18.449 6.25 9.00 12.25 100 400 (a) Using the 'square root of time method' determine the following: immediate compression (mm) primary consolidation (mm) coefficient of...
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...
soil mechanics Q4) From the figure and soil profile as below find the following: 1) the...
soil mechanics
Q4) From the figure and soil profile as below find the following: 1) the final consolidation for clay layer under the center of bridge pier as shown below. use the approximate method to calculate the increasing stress in soil. 2) the coefficient of volume compressibility (mv) of clay layer. mass= 2*106 kg footing =10m x 8m 3m y=16.62kN/m3 2m They WT 7m 10m Sand and graver Ysat=19.8kN/m3 Clay Cc=0.33,w=30%,Gs=2.7, Ysat=19.8kN/m3 sand and gravel 4m
9. (10 points) A consolidation test performed on a sample from -depth of the clay layer...
9. (10 points) A consolidation test performed on a sample from -depth of the clay layer results the following: initial void ratio = 0.6-e coefficient of re-compression = 0.025-Cr coefficient of compression 0.224 C preconsolidation stress 3000 psf. coefficient of consolidation = 0.065 ft2/day a) Calculate the primary consolidation setlement of the clay layer due to the proposed fill. b) Find the time it takes to complete 90% of the estimated primary consolidation settlement. a) Proposed fill y 120 lbt...
2) You are given the soil deposit shown below. Assume c,-0.1 ftiday and c0.1 ftday. You...
2) You are given the soil deposit shown below. Assume c,-0.1 ftiday and c0.1 ftday. You have previously calculated that the total ultimate settlement of the clay layer will be 131 ft and it will take 1,908 days to achieve an average degrec of consolidation of 90%. Consider these two options for OPTION : SURCHARGE If you want to accelerate settiement such that an average degree of consolidation of 90% would be achieved in 2 years, how much surcharge would...
Laboratory tests on a 2.5 cm thick clay sample that is drained on both sides indicates...
Laboratory tests on a 2.5 cm thick clay sample that is drained on both sides indicates that 50% consolidation occurs after 8.5 minutes (a) How long will it take for 50% consolidation for the same clay in the field that is 4 m thick but drained at the top only? (b) Find the time required for the same clay layer in Part (a) to reach 65% consolidation.
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...
relatively 5E m2/sec The 2. A new, wide highway embankment is planned deposit of doubly-drained, saturated clay soil wi...
relatively 5E m2/sec The 2. A new, wide highway embankment is planned deposit of doubly-drained, saturated clay soil with c settlement analysis of the 10 m thick clay layer yielded consolidation settlement of 800 mm for the new embankment loading. Determine and plot the settlement of the clay layer (as measured at the ground surface) at 0, 0.49, 3.12, 6.39, 13.44, and 18.44 years. recent across a an estimated
relatively 5E m2/sec The 2. A new, wide highway embankment is...
soil
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...
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...
The oedometer test data below was obtained from a sample of a clay soil when the loading increased from 200 to 400 kN/m² (Table Q8a). Table Q8a Time (min) Time (min) 0.00 0.25 1.00 2.25 4.00 Height (mm) 19.600 19.349 19.178 19.008 18.851 18,727 18.643 18.587 Height (mm) 18.555 18.515 18.505 18.497 18.490 18.483 18.477 18.449 6.25 9.00 12.25 100 400 (a) Using the 'square root of time method' determine the following: immediate compression (mm) primary consolidation (mm) coefficient of...
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...
soil mechanics
Q4) From the figure and soil profile as below find the following: 1) the final consolidation for clay layer under the center of bridge pier as shown below. use the approximate method to calculate the increasing stress in soil. 2) the coefficient of volume compressibility (mv) of clay layer. mass= 2*106 kg footing =10m x 8m 3m y=16.62kN/m3 2m They WT 7m 10m Sand and graver Ysat=19.8kN/m3 Clay Cc=0.33,w=30%,Gs=2.7, Ysat=19.8kN/m3 sand and gravel 4m
9. (10 points) A consolidation test performed on a sample from -depth of the clay layer results the following: initial void ratio = 0.6-e coefficient of re-compression = 0.025-Cr coefficient of compression 0.224 C preconsolidation stress 3000 psf. coefficient of consolidation = 0.065 ft2/day a) Calculate the primary consolidation setlement of the clay layer due to the proposed fill. b) Find the time it takes to complete 90% of the estimated primary consolidation settlement. a) Proposed fill y 120 lbt...
2) You are given the soil deposit shown below. Assume c,-0.1 ftiday and c0.1 ftday. You have previously calculated that the total ultimate settlement of the clay layer will be 131 ft and it will take 1,908 days to achieve an average degrec of consolidation of 90%. Consider these two options for OPTION : SURCHARGE If you want to accelerate settiement such that an average degree of consolidation of 90% would be achieved in 2 years, how much surcharge would...
Laboratory tests on a 2.5 cm thick clay sample that is drained on both sides indicates that 50% consolidation occurs after 8.5 minutes (a) How long will it take for 50% consolidation for the same clay in the field that is 4 m thick but drained at the top only? (b) Find the time required for the same clay layer in Part (a) to reach 65% consolidation.
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...
relatively 5E m2/sec The 2. A new, wide highway embankment is planned deposit of doubly-drained, saturated clay soil with c settlement analysis of the 10 m thick clay layer yielded consolidation settlement of 800 mm for the new embankment loading. Determine and plot the settlement of the clay layer (as measured at the ground surface) at 0, 0.49, 3.12, 6.39, 13.44, and 18.44 years. recent across a an estimated
relatively 5E m2/sec The 2. A new, wide highway embankment is...
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