clay stratum is 4.5 m thick and rests on a rock surface. The coefficient of consolidation of a sample of this clay was found to be 4.5 × 10–8 m2/s in the laboratory. Determine the probable period of time required for the clay stratum to undergo 50% of the ultimate settlement expected under a certain increment of pressure. a.1521 b.1026 c.1346 d.1333

Q: A cylindrical water tank weighing 1,000,000 N with a diameter of 3.5 m is expected to be placed on a…

A: The given data is: Weight of Cylindrical tank (W) = 1,000,000 N Diameter of tank (d) = 3.5 m…

Q: data are given from the laboratory consolidation test. e₁ = 1.10 σ= 65.0 kN/m² e₂ = σ₂=240.0 kN/m²…

A: The Compression Index (Cc) is equal to the slope of the graph of pressure versus void ratio (log…

Q: Q9) The saturated clay sample put into the wax with unit density of 0.8gm/cm³ and its weight 8gm.…

A: Density of the waxγwax=0.8 gm/cm3 and mass of wax  Mwax=8 gmvolume of wax=mass density=80.8=10…

Q: A sample was obtained from point A in the submerged clay layer shown below. It was determined that…

A: A )  Given Data : w = 54 % Gs = 2.78  To Find : Effective vertical stress at A ? A problem of Soil…

Q: saturated specimen of cohesionless sand was tested under drained conditions in a triaxial…

A:

Q: 3- Following are the results of a laboratory consolidation test on a sample of undisturbed clay…

A: Draw the horizontal line from maximum curvature  Draw tangent from the maximum curvature point…

Q: Refer to the soil profile shown in figure below. A laboratory consolidati the results: o'c = 100 kPa…

A: Dry unit weight of sand γdsand=Gγw1+e=2.669.811+0.55=16.835kNm3Sat unit weight of sand…

Q: How long will it take for 50% of the total settlement to occur in laboratory specimen of the clay…

A: Degree of consolidation = U= 50%Cv= 0.25m²/dayDiameter of specimen = 6.35cmH= 2.54cm

Q: From the compaction test of clay, diameter diameter 50 mm. 25 mm high, which is saturated with…

A: Solution: Given Data: d=50 mm H=25 mm Dry weight of soil=110 g G=2.73 Volume of sample…

Q: The following figure shows a uniformly distributed load applied at the ground surface. A sample was…

A: Plot the graph.

Q: A normally consolidated clay sample, which is fully saturated, was consolidated in the triaxial cell…

A: Given data- A normally consolidated clay sample. ½ (σ1 – σ3) = 1/3 σ3 and ½ (σ1′ + σ3′) = 2/3 σ'3…

Q: A sample of coarse sand, 15cm high an 5.5 cm in diameter, was tested in a constant-head permeameter.…

A: Given, L=15 cm h=40 cm D=5.5 cm t=6 s weight of discharge water=400 g   To determine, The…

Q: Pressure (kN/m²)27 54 107 214 429 214 107 54 Void ratio1.243 1.217 1.144 1.068 0.994 1.001 1.012…

A: Thickness of sand = 10 mThickness of clay = 2.5 m Thickness of fill = 10 m

Q: A soft to very soft silty clay layer 3 m thick exists between a layer of permeable clayey silty sand…

A: Given Equation, Ss=Cα'H·log t2t1 where C'α=Ca1+ep Estimation of values, CaCc=0.04 hence…

Q: The results obtained from unconsolidated undrained (UU) triaxial compression tests are given in…

A:

Q: The results of two consolidated-drained test triaxial tests on a clay are given below: Specimen No.…

A:

Q: consolidated clay specimen, the results o 10 lb/ft², Deviator stress at failure = 3,65:

A:

Q: An undrained triaxial compression test is carried out on a saturated clay sample under a cell…

A: Undrained triaxial compression test on saturated clay sample- Cell pressure σc=σ3=50 kN/m2,Deviator…

Q: A consolidated-undrained triaxial compression test was performed on a normal consolidated clay…

A:

Q: Cc = 0.2 and An oedometer test on a saturated clay soil gave the following results: Cs = 0.04. The…

A: Vertical effective stress, Increase in vertical stress, Water content, Thickness, To find:…

Q: 2. You measure the shear strength of a clayey soil sample to be 41 kPa at an effective normal stress…

A: Here we have given two soil samples and we have to calculate the angle of friction of soil sample…

Q: The time for 65% consolidation of a 19-mm clay specimen (drained at top and bottom) in the…

A: The coefficient of clay is : Cv=TvHdr2tFor the clay in laboratory and field the coeff. of…

Q: 1. A Sample of Clay is isotropically normally consolidated was then sheared (standard) in a drained…

A:

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: 1. The pressure versus void ratio data determined from a consolidation test on an undisturbed clay…

A: The pressure and void ratio are tabulated below.Pressure (kPa)Void…

Q: Q3: Refer to the soil profile shown in the figure below: a) Calculate the variation in vertical…

A:

Q: A soil has an unconfined compressive strength of 120 kN/m2. In a triaxial compression test a…

A:

Q: 2 7.3 A normally consolidated clay specimen (d=31°) was consolidated under a chamber-confining…

A: For pore water pressure we have the concept of effective stress

Q: Q1- In an Odometer test a specimen of saturated clay 26 mm thick reaches 58% consolidation in 31…

A:

Q: A sample of clean sand was retrieved from 7 m below the surface. The sample had been under a…

A: Given : Vertical load = 150 kN/m2 Horizontal load = 250 kN/m2 Shear stress = 86.6 kN/m2 This is a…

Q: A series of previous tests has established that the ultimate effective friction angle of a NC clayey…

A: Given Data: friction angle = 19.20 soil pressure = 105 kpa

Q: 2. A layer of compressible clay 6m thick overlies an impervious bedrock and carries an overburden of…

A:

Q: The following compres: specimen (G, 2.73) wh. TABLE G Time (min) Gauge (mm) Time (min) 5.00 36 Gauge…

A: Saturated clay specimen Gs=2.73 H=13.6 mm TV time factor for 90% consolidation=0.848 t90=time…

Q: The stresses induced by a surface load on a loose horizontal sand (ɸ = 30o) layer were found to be…

A: Normal stress about horizontal axis, Shear stress about horizontal axis, Normal stress about…

Q: The following figure shows a uniformly distributed load applied at the ground surface. A sample was…

A:

Q: The results of a laboratory consolidation test on a clay specimen are the following. Pressure, r…

A: In this question we have asked elong curve and preconsolidation pressure and compression index…

Q: A sample of ocean sand was retrieved from 7 m below the surface. The sample had been under a…

A: Given data - Vertical stress = 150 KN/m² Horizontal stress = 250 KN/m² Shear stress = 86.6 KN/m²…

Q: A 2 m thick clay is singly drained. A structure founded on the surface applied an average stress…

A: Thickness of clay layer, Increase of average stress,

Q: A sample was obtained from point A in the submerged clay layer shown below. It was determined that…

A:

Q: data for an clay sample are as follows: The laboratory consolidation undisturbed e. e₁ = 1.00, ₁ =…

A:

Q: Question 7 During the glacial period, the in situ stress of a clay formation was approximately…

A:

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.