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4) Steady-state seepage condition exists in the vertical direction. For the piezometer condition shown, compute: a....
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) (30) A circular oil tank is located as shown below The tank is filled with...
3) (30) A circular oil tank is located as shown below The tank is filled with oil that weighs 8.50 kN/m3. The clay is normally consolidated Answer the following questions. a) What is the effective geostatic stress at point "A" (at the middle of the clay layer, below the center of the tank)? b) What is the induced stress at point "A" produced by the tank? c) By how much will the thickness of the clay change due to the...
Variation of U, with T, and z/Hdr Proposed fill y 19.2 kN/m3 3,0 m 0 Compressibility of Soil teh 2.0 Y -18.5 kN/m3-; 1.5m-U Fine to medium sand (SP) 2.0 m 2 1.5 0.7 0.8 3.0 m 0.9 4.0m Soft clay (CL)...
Variation of U, with T, and z/Hdr Proposed fill y 19.2 kN/m3 3,0 m 0 Compressibility of Soil teh 2.0 Y -18.5 kN/m3-; 1.5m-U Fine to medium sand (SP) 2.0 m 2 1.5 0.7 0.8 3.0 m 0.9 4.0m Soft clay (CL) γ 16.0 kN/m3 0.5 10.0m (4 3 batto oLthe soil specin 0 0.1 023 04 03 06 7 08 09 10 Degree of eomsolidasion,U Example: Degree of consolidation Dense sand and gravel The proposed sand fill is 3...
A levee is constructed atop a 3m thick clay layer resting atop a sand layer. During...
A levee is constructed atop a 3m thick clay layer resting atop a sand layer. During a storm event, the levee retains water and the soil at the bottom of the channel is sand that is hydraulically connected to the sand beneath the clay. Head loss in the sand layer is negligible (i.e., the total head at point A is the same as the total head at point B), and water flows vertically upward through the clay. The water table...
Question 2 The soil profile at a level site consists of a 3-m thick layer of...
Question 2 The soil profile at a level site consists of a 3-m thick layer of sandy clay, overlaying an 8-m thick layer of loose sand, overlaying stiff gravelly clays that extend to depths greater than 20 m. The water table is at a depth of 2 m and the ground water is initially hydrostatic. The total unit weight of the upper sandy clay, above or below the water table, is 18 kN/m3. The total unit weight of the loose...
3) At a construction site, a site investigation has been carried out. At ground level (-1...
3) At a construction site, a site investigation has been carried out. At ground level (-1 m NAP) a clay layer with a thickness of 4 m is found (y = 16 kN/m”, k = 2.0x10-12 m/s, Cp = 15), followed by a sand layer of 6 m thickness (y = 20 kN/m², k = 5.0x10-7 m/s), another clay layer of 4m thickness (y = 18 kN/m3, k = 4.5x10-11 m/s, Cp = 25), and finally another sand layer (y...
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...
please show step by step (also show how to find the vertical stress increase) 18 A...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
Please, show step by step and clearly. problem 9.17, (Use 3 equally divided sub-layers for the 15...
Please, show step by step and clearly. problem 9.17, (Use 3
equally divided sub-layers for the 15 m clay layer). thanks
please, resolve question 9.17 (Use 3 equally divided sub-layers
for the 15 m clay layer)
9.16 The soil profile and the loading condition are given in the followin n) figure. Total new footing stress including the foundation at z 2 is 400 kN/m2. The soil profile has a rather thick clay layer (15 so that the layer should be...
Problem 4: a) Calculate the total overburden, effective stress and pore pressure distribution for the soil...
Problem 4: a) Calculate the total overburden, effective stress and pore pressure distribution for the soil profile below. Neglect the surcharge for this analysis. Draw out all pressure profiles in a neat manner using a ruler. NO sketches and sloppy drawings permitted. b) Calculate the change in pressure if the water table rises to the interface of the clayey/sandy soil layers. You may show your results graphically or report the change in pressures along with the new pressures at the...
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) (30) A circular oil tank is located as shown below The tank is filled with oil that weighs 8.50 kN/m3. The clay is normally consolidated Answer the following questions. a) What is the effective geostatic stress at point "A" (at the middle of the clay layer, below the center of the tank)? b) What is the induced stress at point "A" produced by the tank? c) By how much will the thickness of the clay change due to the...
Variation of U, with T, and z/Hdr Proposed fill y 19.2 kN/m3 3,0 m 0 Compressibility of Soil teh 2.0 Y -18.5 kN/m3-; 1.5m-U Fine to medium sand (SP) 2.0 m 2 1.5 0.7 0.8 3.0 m 0.9 4.0m Soft clay (CL) γ 16.0 kN/m3 0.5 10.0m (4 3 batto oLthe soil specin 0 0.1 023 04 03 06 7 08 09 10 Degree of eomsolidasion,U Example: Degree of consolidation Dense sand and gravel The proposed sand fill is 3...
A levee is constructed atop a 3m thick clay layer resting atop a sand layer. During a storm event, the levee retains water and the soil at the bottom of the channel is sand that is hydraulically connected to the sand beneath the clay. Head loss in the sand layer is negligible (i.e., the total head at point A is the same as the total head at point B), and water flows vertically upward through the clay. The water table...
Question 2 The soil profile at a level site consists of a 3-m thick layer of sandy clay, overlaying an 8-m thick layer of loose sand, overlaying stiff gravelly clays that extend to depths greater than 20 m. The water table is at a depth of 2 m and the ground water is initially hydrostatic. The total unit weight of the upper sandy clay, above or below the water table, is 18 kN/m3. The total unit weight of the loose...
3) At a construction site, a site investigation has been carried out. At ground level (-1 m NAP) a clay layer with a thickness of 4 m is found (y = 16 kN/m”, k = 2.0x10-12 m/s, Cp = 15), followed by a sand layer of 6 m thickness (y = 20 kN/m², k = 5.0x10-7 m/s), another clay layer of 4m thickness (y = 18 kN/m3, k = 4.5x10-11 m/s, Cp = 25), and finally another sand layer (y...
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...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
Please, show step by step and clearly. problem 9.17, (Use 3
equally divided sub-layers for the 15 m clay layer). thanks
please, resolve question 9.17 (Use 3 equally divided sub-layers
for the 15 m clay layer)
9.16 The soil profile and the loading condition are given in the followin n) figure. Total new footing stress including the foundation at z 2 is 400 kN/m2. The soil profile has a rather thick clay layer (15 so that the layer should be...
Problem 4: a) Calculate the total overburden, effective stress and pore pressure distribution for the soil profile below. Neglect the surcharge for this analysis. Draw out all pressure profiles in a neat manner using a ruler. NO sketches and sloppy drawings permitted. b) Calculate the change in pressure if the water table rises to the interface of the clayey/sandy soil layers. You may show your results graphically or report the change in pressures along with the new pressures at the...
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