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Problem 3 (30%): Calculate the vertical stress at Z=4 m under the center of a 4...
Question 4. show all work please 3. A soil materi al was found to have the...
Question 4. show all work please
3. A soil materi al was found to have the a modulus of elasticity of 10 ksi and v 0.5. If the soil is loaded with a rigid rectangular slab 12' long and 9' wide and carrying a uniformly distributed load of 30 psi, estimate the immediate elastic settlement of the center of the foundation. Assume the foundation is flexible 4. For the previous problem, estimate the vertical elastic stress at a distance of...
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...
PROBLEM 2. ELO 2 Capable to determine foundation settlement (weighitng5 309630 minutes A rectangular shallow foundation...
PROBLEM 2. ELO 2 Capable to determine foundation settlement (weighitng5 309630 minutes A rectangular shallow foundation with 1.2 mx 1.2 m carried vertical load of 350 kN, laid down at 1,0 m below the ground surface. Soil layer data and GWT given on the sketch A. Determine elastic settlement of the soil (use graph below). ELO 2-3 B. Determine consolidation settlement (assume sand layer under the clay layer to calculate Aa). ELO 2-3 C. Determine time consolidation at the degree...
The figure below shows a flexible rectangular raft foundation that is proposed for one of the...
The figure below shows a flexible rectangular raft foundation
that is proposed for one of the industrial buildings at the site.
The foundation is 10 feet X 20 feet and applies an uniform pressure
of 3000 psf to the underlying soil.
a. Using the influence factor method to calculate the stress
below a rectangular area, find the vertical stress increase
()
at 6 feet below points A, B, and C.
b. Assume that this foundation (thickness = 1.25 feet,
Ef...
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...
Question 3c, how was the effective stress calculated for the depth of 2,6 and 10 m?...
Question 3c, how was the effective stress calculated for the
depth of 2,6 and 10 m? How was the Cp calculated? Is sigma 1 the
effective stress? What is sigma? Why d is 4?
1 3c In ε- Cp w-Σε disp ε. d do initial o Deformation depth d Strain (-) (m) 4 176.2 1.08 2 62 0.27 6 107 4 128.4 0.16 0.63 152 4 10 95.5 0.10 0.39 total 2.10 in 3) A 10 m wide and very...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a layer of fine sand 10.4 m thick above a layer of soft, normally consolidated clay 2 m thick. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 m below ground level. The void ratio of the sand is 0.76, and the water content of the clay is 43%. The building will impose a vertical stress increase...
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...
solve Question 8. please show steps [Problems 7-8] A 12 m thick layer of Omaha clay...
solve Question 8. please show steps
[Problems 7-8] A 12 m thick layer of Omaha clay is double drained. (This means that a very pervious layer compared to the clay exists on top of and under the 12 m clay layer). The coefficient of consolidation is Cy = 8.0 x 10-8 m²/s. Problem 7. Estimate the degree of consolidation for the clay layer 5 years after loading at the depth of 6 m. (1) 32% (2) 46% (3) 61% (4)...
Part 2 A 2 mx 4 m footing is founded at a depth of 0.6 m...
Part 2 A 2 mx 4 m footing is founded at a depth of 0.6 m and supports a vertical load of 400 kN and a horizontal loads of 50 kN and 80 kN. The horizontal loads are acting at 0.9 m above the top of the foundation. The footing is 0.6 m thick and the unit weight of the concrete is 24 kN/m'. GWT 3 m from ground surface. 50 kN 400 KN 80 KN = 4 m B...
Question 4. show all work please
3. A soil materi al was found to have the a modulus of elasticity of 10 ksi and v 0.5. If the soil is loaded with a rigid rectangular slab 12' long and 9' wide and carrying a uniformly distributed load of 30 psi, estimate the immediate elastic settlement of the center of the foundation. Assume the foundation is flexible 4. For the previous problem, estimate the vertical elastic stress at a distance of...
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...
PROBLEM 2. ELO 2 Capable to determine foundation settlement (weighitng5 309630 minutes A rectangular shallow foundation with 1.2 mx 1.2 m carried vertical load of 350 kN, laid down at 1,0 m below the ground surface. Soil layer data and GWT given on the sketch A. Determine elastic settlement of the soil (use graph below). ELO 2-3 B. Determine consolidation settlement (assume sand layer under the clay layer to calculate Aa). ELO 2-3 C. Determine time consolidation at the degree...
The figure below shows a flexible rectangular raft foundation
that is proposed for one of the industrial buildings at the site.
The foundation is 10 feet X 20 feet and applies an uniform pressure
of 3000 psf to the underlying soil.
a. Using the influence factor method to calculate the stress
below a rectangular area, find the vertical stress increase
()
at 6 feet below points A, B, and C.
b. Assume that this foundation (thickness = 1.25 feet,
Ef...
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...
Question 3c, how was the effective stress calculated for the
depth of 2,6 and 10 m? How was the Cp calculated? Is sigma 1 the
effective stress? What is sigma? Why d is 4?
1 3c In ε- Cp w-Σε disp ε. d do initial o Deformation depth d Strain (-) (m) 4 176.2 1.08 2 62 0.27 6 107 4 128.4 0.16 0.63 152 4 10 95.5 0.10 0.39 total 2.10 in 3) A 10 m wide and very...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a layer of fine sand 10.4 m thick above a layer of soft, normally consolidated clay 2 m thick. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 m below ground level. The void ratio of the sand is 0.76, and the water content of the clay is 43%. The building will impose a vertical stress increase...
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...
solve Question 8. please show steps
[Problems 7-8] A 12 m thick layer of Omaha clay is double drained. (This means that a very pervious layer compared to the clay exists on top of and under the 12 m clay layer). The coefficient of consolidation is Cy = 8.0 x 10-8 m²/s. Problem 7. Estimate the degree of consolidation for the clay layer 5 years after loading at the depth of 6 m. (1) 32% (2) 46% (3) 61% (4)...
Part 2 A 2 mx 4 m footing is founded at a depth of 0.6 m and supports a vertical load of 400 kN and a horizontal loads of 50 kN and 80 kN. The horizontal loads are acting at 0.9 m above the top of the foundation. The footing is 0.6 m thick and the unit weight of the concrete is 24 kN/m'. GWT 3 m from ground surface. 50 kN 400 KN 80 KN = 4 m B...
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