A 3-m layer of saturated (two way drainage) under a surcharge loading underwent 90% primary consolidation in 100 days. The laboratory test specimen will have two way drainage. (a) Find the coefficient of consolidation of clay for the pressure range. (b) For a 25 mm thick undisturbed clay specimen, how long will it take to undergo 80% consolidation in the laboratory for a similar pressure range?

Q: A clay sample was consolidated in a triaxial cell under a backpressure of 50 kPa and cell pressure…

A: SKEMPTON PARAMETER B: IT IS DEFINED AS THE RATIO OF CHANGE IN PORE PRESSURE TO THE CHANGE IN CELL…

Q: The following consolidation test data were obtained from an undisturbed clay specimen. Pressure…

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Q: xplain what overconsolidated and normally consolidated means, and how each relates to the…

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Q: For a normally consolidated clay, the following were recorded; confining pressure= σ3 = 140KPa and…

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

A: Pore pressure coefficient at failure : The horizontal difference between the intersection of K0-line…

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

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Q: A 3-m-thick layer (two-way drainage) of saturated clay under a surcharge loading underwent 90%…

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Q: Laboratory tests on a 25mm thick clay specimen drained at both the top and bottom show that 50%…

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Q: A 3 meter thick clay layer (pore water flowing in both directions) saturated with water loaded with…

A: The answer is found to be Coefficient of consolidation Cv=0.01272 m^2/day  For explanation please…

Q: A 10 m deep layer of clay has a void ratio of 0.56 and is loaded with an effective normal stress…

A: Given: Layer depth, H = 10 m Void ratio, e = 0.56 Effective normal stress = 150 kPa Additional…

Q: A clay soil tested in a consolidometer showed a decrease in void ratio from 0.9 to 0.8 when the…

A: Given data: A clay soil decrease in void ratio from 0.9 to 0.8 Pressure was increased from 0.2 to…

Q: 2- An undisturbed clay has a preconsolidation pressure of 200 Ib/ft. A laboratory consolidation…

A: Pre-consolidation : The highest effective vertical overburden stress that a given soil sample has…

Q: 1.Laboratory tests on a 25mm thick clay specimen drained at both the top and bottom show that 50%…

A: As per Bartleby policy i can answer  only one question at a time. Please upload other questions…

Q: : A clay specimen was tested in a laboratory consolidation device, which was 12.7 mm thick and the…

A: The compressibility of the soil is defined as the ability of the soil to compress or settle. The…

Q: (b). The results of a consolidation test on an undisturbed soil sampled at a depth of 10m below the…

A: Given Data- Depth at which soil is sampled = 10 m Saturated unit weight, γsat  = 16 kN/m3 γw=10…

Q: The time required for a 50% consolidation of a 25 mm thick layer (drained at both sides) in the…

A: solutionTime for 50% consolidationt=2min 20sec=140 secfrom settlement tableTv=0.197 for 50%…

Q: Question  attached

A: The test results related to consolidation are 1)The relation between dial gauge reading and time…

Q: In an oedometer test, a specimen of saturated clay 19 mm thick reaches 50% consolidation in 20…

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Q: The time required for 50% consolidation of a 20 mm- thick clay layer(drained at both top and bottom)…

A: It is required to determine the time of consolidation using the relation. Tv=CvtH2 Here Tv is the…

Q: A strata of normally consolidated clay of 3 m depth is drained at both the ends. The coefficient of…

A: Given, Coefficient of permeability= k = 5×10^(-8) cm/s  Coefficient of volume compressibility = mv =…

Q: Q-19: The figure given below represents time-consolidation relationship for a 30 mm thick clay…

A: step 1-

Q: A normally consolidated clay layer is 4m thíck and is drained on one sIde only. From the plication…

A: solutionGiven thichness of layer H=4mexpected consolidation Sf=80mmalet the degree of consolidation…

Q: In an oedometer test, with half-closed drainage condition, a specimen of saturated clay 19 mm thick…

A: Solution:

Q: A normally consolidated clay layer is 4 m thick (one-way drainage). From the application of a given…

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Q: Problem 10: A 3-m thick, doubly-drained saturated stratum of clay is under a surcharge loading that…

A: The thickness of clay layer = 3m Time for consolidation = 75 days = 75*24*60*60 =6480000 Percentage…

Q: 10.11 A consolidated drained triaxial test was carried out on a normally con- solidated clay…

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Q: Laboratory tests on a 25-mm-thick clay specimen drained at the top and bot- tom show that 50%…

A: a) Given data:

Q: A clay sample was consolidated in a triaxial cell under a backpressure of 50 kPa and cell pressure…

A: Solution: Skempton Parameter B:It is defined as change in pore pressure to the change in cell…

Q: A 75 mm diameter clay specimen was consolidated in an oedometer under 200 kPa. At the end of…

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

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Q: Question attached

A: Final settlement is calculated as:  ΔH= ΔeH/(1+e) In an oedometer test: dh=de*h/(1+eo) The change in…

Q: Question attached

A: Given:- ∆σ'+σ'o=212kN/m2σ'o=140kN/m2To find:-a) expected maximum primary consolidtaion settlementb)…

Q: A 10 ft thick clay layer of saturated clay (two-way drainage) under a loading underwent 90% primary…

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

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Q: Q1- In an Odometer test a specimen of saturated clay 26 mm thick reaches58% consolidation in 31 min.…

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Q: 1.In an oedometer test a specimen of saturated clay 19 mm thick reaches 50% consolidation in 20 min.…

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Q: 4. A 3.2 m thick layer of saturated clay undera surcharge loading underwent 90% primary…

A: Given data in question Thickness of layer 2 way drainage  = d =H/2 90% consolidation  Time taken To…

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: 9. A 4.5 m saturated clay layer (two-way drainage) subjected to surcharge loading underwent 90%…

A: Given data:    The primary consolidation, U = 90%    Thickness of saturated clay layer = H = 4.5 m…

Q: A saturated sample of normally consolidated clay was consolidated under an all-round cell pressure…

A: Cu = qu2 where qu - compression strength            Cu - shear strength we have,…

Q: Laboratory test on a 35 mm thick clay specimen drained just at the top show that 60% consolidation…

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Q: The following figure show the relationship between the voids ratio and effective stress for a soil…

A: Given,  e = 0.8 H = 6 m σ1 =70 kpa∆σ =10 kpaCc =0.3Cr = 0.04Expresion for consolidation settlement…

Q: A consolidated undrained triaxial test was performed on a normally consolidated clay with a critical…

A: for normally consolidated soil The cohesion is zerocu=0so,σ3=σc=50kpaσ1=σc+σ1=50+σd

Q: The figure shows the soil profile at a site where you plan to lower the water table. You have…

A: All the calculations are shown in below tabs. Here is  a big problem where water level is reduced…

Q: A 3 m thick stratum (drained in two directions) of saturated Clay and under overburden, exhibited…

A: Given Data: Saturated Clay of thickness (H) = 3 m Both way drainage Primary Consolidation (U) = 90%…

Q: he soil profile at a site consists of a top 4 m layer of dense sand followed by 2 m of clay, which…

A: Consolidation settlement is the process by which the volume of soil is reduced by the removal of…

Q: A 3-m layer (double drainage) of saturated clay under a surcharge loading underwent 90% primary…

A: Thickness of layer (H) = 3m Time for 90% consolidation (t90) = 75 days

Q: A clay layer 5 m thick has double drainage. It was consolidated under a load of 127.5 kN/m2. The…

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Q: A 8 m thick clay layer with single drainage settles by 120 mm in 2 years. The coefficient of…

A: This question is related to the Consolidation from Geotechnical Engineering.

Q: Following are the results of two consolidated-drained triaxial tests on a clay: 03 = 82.8 KN/m²; 01…

A: We will use the formula  1) σ 1 = σ 3 tan ² α F + 2c tan α F  329.2 = 82.8tan²α F +2c tan α f ...(1)…

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.