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Problem 2. [2596] Figure 2 shows a soil profile. The uniformly distributed load on the ground...
(4). (8 pts). A soil profile is shown in below Figure. A uniformly distributed load Ao is applied at the surface of soil. Given the preconsolidation pressure is between swell index and compressio...
(4). (8 pts). A soil profile is shown in below Figure. A uniformly distributed load Ao is applied at the surface of soil. Given the preconsolidation pressure is between swell index and compression index is: C C/6. The unit weight of water is: -9.38 kN/m. If U-98% we regard it as a completion of primary consolidation. We have taken the clay sample and done the Atterberg Limit test. For the liquid limit test, the result is as below. Please ơ'-926...
Two undisturbed clay samples were taken from the middle of the overconsolidated and normally consolidated clay layers in the soil profile shown. The water table is at the top of the overconsolidated c...
Two undisturbed clay samples were taken from the middle of the
overconsolidated and normally consolidated clay layers in the soil
profile shown. The water table is at the top of the
overconsolidated clay layer. Consolidation tests were carried out
on the two samples and the results are summarized in the table
below. Assume that the bulk, dry, and saturated unit weights of the
sand are 16 kN/m3, 16 kN/m3 and 19
kN/m3, respectively. The specific gravity of the clay
soil...
Problem 7 The soil profile at a site consists of a top 4 m layer of...
Problem 7 The soil profile at a site consists of a top 4 m layer of dense sand followed by 2 m of clay, which is underlain by a stiff stratum. The water table is at 2 m below the ground level. The following data was obtained from a consolidation test on an undisturbed sample obtained from the middle of the clay layer: water content 5 36%, specific gravity of the clay grains = 2.72, compression index = 0.72, recompression...
1. (25 points) The soil profile at a site consists of a layer of fine sand...
1. (25 points) The soil profile at a site consists of a layer of fine sand 5 m thick above a layer of clay 4 m thick. Below the clay is a layer of impermeable rock. The groundwater table was observed at 2 m below ground level. The unit weight of the sand above and below the water table is 20 KN/m'. The water content of the clay is 25% and its dry unit weight is 15 KN/m'. The compression...
The ground profile of a construction site consists of a 3 m thick layer of sand...
The ground profile of a construction site consists of a 3 m thick layer of sand followed by a 2 m thick layer of clay lying on impervious bedrock. The water table is at a depth of 2 m below the ground surface. The sand has a dry unit weight of 16 kN/m3 and a saturated unit weight of 18 kN/m3. The capillary rise in the sand is 0.5 m. The clay has a bulk unit weight of 19 kN/m3....
Question 4 (20 marks): A 2-m thick normally-consolidated clay soil is resting on impermeable shale rock;...
Question 4 (20 marks): A 2-m thick normally-consolidated clay soil is resting on impermeable shale rock; a 20-m thick layer of sandy soil is placed on top of the clay to expedite consolidation process. The unit weight of the sand is 15 kN/m3 and the unit weight of the clay is 10 kN/m3. For the clay layer, the initial void ratio is 2.0, the compression index of the clay is Ce 0.40, the recompression index is C, - 0.10, and...
The ground profile of a construction site consists of a 3 m thick layer of sand...
The ground profile of a construction site consists of a 3 m thick layer of sand followed by a 2 m thick layer of clay lying on impervious bedrock. The watertable is at a depth of 2 m below the ground surface. The sand has a dry unit weight of 16 kN/m and a saturated unit weight of 18 kN/m3. The capillary rise in sand is 0.5 m. The clay has a bulk unit weight of 19 kN/m 1. One...
A 2-m thick of compacted soil of unit weight 20 kN/m3 will be placed on the top of the ground surface. Δσ y...
A 2-m thick of compacted soil of unit weight 20 kN/m3 will be placed on the top of the ground surface. Δσ y 14.0 kN/m3 3.0 m Sand Y 17.5 kN/m3 2.0 m 3.0m A Soft clay y= 13.5 kN/m3 6.0 m Medium clay y=15.0 kN/m3 B 4.0 m Bedrock a) Before placing the compacted soil, what are the overconsolidation ratios (OCR) for point A and B? b) When placing the compacted soil, what external load Ag would be? c)...
3. A soil profile shown below. The uniformly distributed load on the ground surface is Do....
3. A soil profile shown below. The uniformly distributed load on the ground surface is Do. Estimate the primary settlement of the normally consolidated clay layer, given that H-6ft, H2 - 10 ft, Hz - 4ft For sand, Ydry = 113 lb/ft'Ysat = 188.7 lb/ft? For clay, Ysat - 186.4 lb/ft. e=0.85, LL = 55 Ao'-2,000 lb/ft? -0.0003 in /sec 140' Dry sand Satiiruted sand Primary Settlement, Sc of Normally Consolidated clay - If the clay above was overconsolidated, what...
e3 shows the soil profile (sand-clay-sand) at the site of a warehouse that causes a surface...
e3 shows the soil profile (sand-clay-sand) at the site of a warehouse that causes a surface ding of 100 kPa. (pw= 1000 kg/m; g 9.81 m/s2) on 4 (25 marks) A clay sample was cored at 7 m depth (middle of the clay layer). Based on laboratory test data, it was found that the clay was over-consolidated with OCR = 2.5 (before applying surface loading), compression index Ce 0.44 and recompression index C. = 0.1. The consolidation coefficient of clay...
(4). (8 pts). A soil profile is shown in below Figure. A uniformly distributed load Ao is applied at the surface of soil. Given the preconsolidation pressure is between swell index and compression index is: C C/6. The unit weight of water is: -9.38 kN/m. If U-98% we regard it as a completion of primary consolidation. We have taken the clay sample and done the Atterberg Limit test. For the liquid limit test, the result is as below. Please ơ'-926...
Two undisturbed clay samples were taken from the middle of the
overconsolidated and normally consolidated clay layers in the soil
profile shown. The water table is at the top of the
overconsolidated clay layer. Consolidation tests were carried out
on the two samples and the results are summarized in the table
below. Assume that the bulk, dry, and saturated unit weights of the
sand are 16 kN/m3, 16 kN/m3 and 19
kN/m3, respectively. The specific gravity of the clay
soil...
Problem 7 The soil profile at a site consists of a top 4 m layer of dense sand followed by 2 m of clay, which is underlain by a stiff stratum. The water table is at 2 m below the ground level. The following data was obtained from a consolidation test on an undisturbed sample obtained from the middle of the clay layer: water content 5 36%, specific gravity of the clay grains = 2.72, compression index = 0.72, recompression...
1. (25 points) The soil profile at a site consists of a layer of fine sand 5 m thick above a layer of clay 4 m thick. Below the clay is a layer of impermeable rock. The groundwater table was observed at 2 m below ground level. The unit weight of the sand above and below the water table is 20 KN/m'. The water content of the clay is 25% and its dry unit weight is 15 KN/m'. The compression...
Question 4 (20 marks): A 2-m thick normally-consolidated clay soil is resting on impermeable shale rock; a 20-m thick layer of sandy soil is placed on top of the clay to expedite consolidation process. The unit weight of the sand is 15 kN/m3 and the unit weight of the clay is 10 kN/m3. For the clay layer, the initial void ratio is 2.0, the compression index of the clay is Ce 0.40, the recompression index is C, - 0.10, and...
The ground profile of a construction site consists of a 3 m thick layer of sand followed by a 2 m thick layer of clay lying on impervious bedrock. The watertable is at a depth of 2 m below the ground surface. The sand has a dry unit weight of 16 kN/m and a saturated unit weight of 18 kN/m3. The capillary rise in sand is 0.5 m. The clay has a bulk unit weight of 19 kN/m 1. One...
A 2-m thick of compacted soil of unit weight 20 kN/m3 will be placed on the top of the ground surface. Δσ y 14.0 kN/m3 3.0 m Sand Y 17.5 kN/m3 2.0 m 3.0m A Soft clay y= 13.5 kN/m3 6.0 m Medium clay y=15.0 kN/m3 B 4.0 m Bedrock a) Before placing the compacted soil, what are the overconsolidation ratios (OCR) for point A and B? b) When placing the compacted soil, what external load Ag would be? c)...
3. A soil profile shown below. The uniformly distributed load on the ground surface is Do. Estimate the primary settlement of the normally consolidated clay layer, given that H-6ft, H2 - 10 ft, Hz - 4ft For sand, Ydry = 113 lb/ft'Ysat = 188.7 lb/ft? For clay, Ysat - 186.4 lb/ft. e=0.85, LL = 55 Ao'-2,000 lb/ft? -0.0003 in /sec 140' Dry sand Satiiruted sand Primary Settlement, Sc of Normally Consolidated clay - If the clay above was overconsolidated, what...
e3 shows the soil profile (sand-clay-sand) at the site of a warehouse that causes a surface ding of 100 kPa. (pw= 1000 kg/m; g 9.81 m/s2) on 4 (25 marks) A clay sample was cored at 7 m depth (middle of the clay layer). Based on laboratory test data, it was found that the clay was over-consolidated with OCR = 2.5 (before applying surface loading), compression index Ce 0.44 and recompression index C. = 0.1. The consolidation coefficient of clay...
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