A soil has a void ratio of 0.6 under a normal stress of 105 kPa. It is required to reduce the void ratio of the soil to 0.45. Calculate the value by which the normal stress should be increased to achieve this. The soil is having a compression index of 0.3.

Q: For the layered soil shown in the figure, H1 = 5 m, H2 = 5 m, and H3 = 20 m. The soil densities are…

A: Given data: H1 = 5 m, H2 = 5 m,  H3 = 20 m. The soil densities are ρ1=2040kg/m3, ρ2=1940kg/m3,…

Q: A layer of soft clay having an initial void ratio of 2.00 is 10 m thick. Under a compressive load…

A:

Q: A consolidated-undrained test on a normally consolidate clay yield the following results: Confining…

A:

Q: A consolidated-undrained test on a normally consolidate clay yield the following results: Confining…

A: To Determine Consolidated drained friction angle Φ'

Q: (b) Calculate the stress increase at the center of the clay layer and 1) beneath the foundation…

A: The Foundation helps in transfer of load to the ground from the structure. Given, P=80 kPa D=6 m…

Q: The average effective overburden pressure on 10 m thick homogeneous saturated clay layer is 150 kPa.…

A:

Q: A 6 foot thick clay layer is determined to have the consolidation properties shown below. If the…

A: Consolidated settlement is the process by which the volume of soil is decreased by the removal of…

Q: A compression test (CU) was conducted on a normally consolidated clay at a confining pressure of l10…

A: Given: Confining pressure = 110 kPa Deviator stress = 90 kPa Pore-water pressure = 55 kPa

Q: The compression curve (void ratio, e vs. effective stress, o) for a certain clayey soil is a…

A:

Q: A saturated clay sample in an oedometer is under vertical pressure of 120 kPa and is at a normally…

A:

Q: A tri-axial compression test on a cohesive sample cylindrical in shape yields the following…

A: We have to determine the value of cohesion of the soil as per the given data in the question like…

Q: For normal stress of 142kPa, the value of void ratio is 0.6. Determine the amount of normal stress…

A:

Q: A soil sample is having a cohesion value of 10 kN/m². A normal stress of 150 kN / m² is applied on…

A: Given: Cohesion, C = 10 kN/m2 Normal stress, σ = 150 kN/m2 Shear stress, ϕ = 100 kN/m2

Q: A consolidated-drained triaxial test was conducted on a normally consolidated clay.The results were…

A: a. For normally consolidated soil the failure envelope equation is given by: For triaxial test, the…

Q: An undisturbed soil sample, 2 cm thick undergoes a change in thickness of 0.2 mm when subjected to a…

A:

Q: The compression curve (void ratio, e vs. effective stress, ) for a certain clayey soil is a straight…

A: given- Point 1-e=1.2σv=50 kPaPoint 2-e=0.6σv=800 kPa

Q: Asoil sample has a compression index (Cc) of 0.3. If the void ratio e at a stress of 500 kN/m² is…

A:

Q: Definition of subsurface effective stress and total stress, and explain the relationship between the…

A: Subsurface effective stress :- This is the kind of stress in which every grain of soil the stress is…

Q: When a clay's effective stress is increased by 12,000 kg/m, the change in the void ratio is 0.20. If…

A: Given: Change in effective stress '∆σ' =12000kg/m^2 =1.2kg/cm^2 Change in void ratio '∆e' = .2…

Q: 12. A stratum of clay 1.8 m thick below an incompressible soil will be subjected to a stress…

A: Given Data : Thickness of clay layer, Ho = 1.8 m Increased stress, ∆σ¯= 36 kPa Preconsolidated…

Q: A saturated soil has a compression index of 0.25. It's void ratio at a stress of 10 kN/m2 is 1.82.…

A:

Q: Consolidated undrained triaxial tests are performed on two identical specimens of saturated,…

A: from triaxial test we know thatσ1=σ3tan245+ϕ2+2Ctan45+ϕ2where   σ1=vertical stress =σd+σ3and…

Q: indicate the final answer in 3 decimal places.

A:

Q: A dry sand sample in a triaxial test failed when the confining stress (minor principal stress) was…

A: The given data is shown below:

Q: A consolidated-undrained test on a normally consolidate clay yield the following results: Confining…

A:

Q: A soil sample is having a cohesion value of 10 kN/m². A normal stress of 150 kN/m² is applied on the…

A: Given: Cohesion, C = 10 kN/m2 Normal stress, σ = 150 kN/m2 Shear stress, ϕ = 100 kN/m2

Q: Question 6 A consolidation test was conducted on a clay sample and found that the clay has a…

A:

Q: A layer of soil is initially imposed with an effective normal stress of 120Kp and then an additional…

A: Given: Effective normal pressure = 120 kPa Additional stress = 180 kPa Depth of soil layer, H = 6.67…

Q: Take a look at the figure below. Estimate the primary consolidation settlement in the clay layer.…

A: LL represents liquid limit of clay

Q: For a normally consolidated clay layer in the field, the following values are given: Thickness of…

A: Appreciate if there is detailed work with explanation and finds you helpful for ease of…

Q: For a normally consolidated clay layer in the field, the following values are given: Thickness of…

A: Given: The thickness of clay layer is 8.5 ft. The void ratio is 0.8. The compression index is 0.28.…

Q: What is the active pressure coefficient for a soil with 28˚ angle of internal friction and cohesion…

A: Data is as given

Q: A particular soil failed under a major principal stress of 425 kPa with a corresponding minor…

A:

Q: A consolidated-undrained test on a normally consolidate clay yield the following results: Confining…

A:

Q: A NC clay soil has the total stress friction angle (φ) = 10⁰. When the soil is conducting SCU…

A: Given: A normally consolidated clayey soil having friction angle (φ) = 10⁰ In CU test, confining…

Q: A soil sample is subjected to an initial equal-all-around hydrostatic state of kPa. Sketch the…

A: NOTE : Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: For the layered soil shown in the figure, H1 = 5 m, H2 = 5 m, and H3 = 20 m. The soil densities are…

A:

Q: A layer of soft clay having an initial void ratio of 2.00 is 10 m thick. Under a compressive load…

A:

Q: soil

A:

Q: Question 4 A consolidation test was conducted on a clay sample and found that the clay has a…

A: Given data: pre consolidation pressure = 120 kPa initial effective vertical stress = 100 kPa.

Q: For a normally consolidated insensitive clay ∅_CD = 30°. Deviator stress at failure of the same soil…

A:

Q: A soil sample has a compression index of 0.3. If the void ratio e at a stress of 2940 lb/ft2 is 0.5,…

A: Solved

Q: In an Oedometer apparatus, a specimen of fully saturated clay has been consolidated under a vertical…

A: Given- Initial Vertical pressure=50 kN/m2Final Vertical pressure=150 kN/m2Effective stress &…

Q: An undisturbed soil sample, 2 cm thick undergoes a change in thickness of 0.2 mm when subjected to a…

A:

Q: The normal stress of a soil sample is165 kPa at void ratio of 0.66. If the compression index of the…

A: Given: First normal stress, σ1 = 165 kPa First void ratio, e­1 = 0.66 Second void ratio, e2 = 0.56…

Q: 5. The shear strength of a normally consolidated clay can be given by the equation 7 = o'tan 31°. A…

A: Given :- Chamber confining pressure = 112 KN/m2 Deviator stress at failure = 100 KN/m2   Angle of…

Q: While increasing the pressure to 150 kPa from 50 kPa, the change in void ratio of soil is observed…

A: Given change in void Ratio of soil, Δe = 0.12 Initial pressure, σ1 = 50 kpa Final pressure, σ2 = 150…

Consolidation parameters

Consolidation is the process of expulsion of pore water present in the voids of soil solids under the pressure of the applied load. This is a quick process in the case of coarse-grained soils since the permeability is high due to the presence of more voids, while it is a slow and gradual process in the case of clayey soil as the permeability of clay is less. An example of consolidation is the settlement of soil under a building due to the load coming from the building.