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TO. A uniformly distributed surcharge of T50 kN/m2 was applied at the ground surface of the...
(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...
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)...
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...
2. A future development site is to be preloaded with a 310 kPa surface surcharge to reduce potent...
2. A future development site is to be preloaded with a 310 kPa surface surcharge to reduce potential settlements in a 12.5-m thick soft clay layer. The soft clay is overlain by a 3-m thick sand layer and underlain by permeable bedrock. The groundwater table is at the sand-clay interface. A sample of the soft clay was extracted from a depth of 9 m and a 1D consolidation and compression test was conducted. Compression data obtained from the test are...
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 5 (20 marks) A I-m thick, c applied on the top surface of the clay using Sheepsfoot rollers t Ily-saturate...
Question 5 (20 marks) A I-m thick, c applied on the top surface of the clay using Sheepsfoot rollers t Ily-saturated clay is resting on a dry sand when a uniform load of 200 kN/m2 is expedite consolidation process For the saturated clay layer, the initial void ratio of 5.0, specific gravity of 2.65, pre-consolidation ression index of 0.2, and the stress of 20 kN/m2: the compression index of 0.5, the recomp coefficient of consolidation of 0.001 cm2 s" a)...
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...
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...
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...
A square foundation, 2.5 × 2.5 m in size, supports a column load of 478 kN....
A square foundation, 2.5 × 2.5 m in size, supports a column load
of 478 kN. The soil characteristics are given in the figure
below.
A. Estimate the average stress increase in the clay layer due to
the applied load.
B. Estimate the primary consolidation settlement.
478 KN 1.5 m 2.5 mx 2.5 m 7-16 kN/m AD GWT 1.75 m = 18.8 kN/m 3.5 m w - 19% G-2.71 LL-37 o'.-65 kN/m2 C, = 1/5 C C -0.243 7.-20.88 kN/m...
(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...
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)...
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...
2. A future development site is to be preloaded with a 310 kPa surface surcharge to reduce potential settlements in a 12.5-m thick soft clay layer. The soft clay is overlain by a 3-m thick sand layer and underlain by permeable bedrock. The groundwater table is at the sand-clay interface. A sample of the soft clay was extracted from a depth of 9 m and a 1D consolidation and compression test was conducted. Compression data obtained from the test are...
Question 5 (20 marks) A I-m thick, c applied on the top surface of the clay using Sheepsfoot rollers t Ily-saturated clay is resting on a dry sand when a uniform load of 200 kN/m2 is expedite consolidation process For the saturated clay layer, the initial void ratio of 5.0, specific gravity of 2.65, pre-consolidation ression index of 0.2, and the stress of 20 kN/m2: the compression index of 0.5, the recomp coefficient of consolidation of 0.001 cm2 s" a)...
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...
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...
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...
A square foundation, 2.5 × 2.5 m in size, supports a column load
of 478 kN. The soil characteristics are given in the figure
below.
A. Estimate the average stress increase in the clay layer due to
the applied load.
B. Estimate the primary consolidation settlement.
478 KN 1.5 m 2.5 mx 2.5 m 7-16 kN/m AD GWT 1.75 m = 18.8 kN/m 3.5 m w - 19% G-2.71 LL-37 o'.-65 kN/m2 C, = 1/5 C C -0.243 7.-20.88 kN/m...
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