A double drain consolidation test was performed on a sample of marine clay. The thickness of the clay layer is 50mm and the hydraulic conductivity during the test was 1,753x10-8 m/min. During the test the following data were determined. σ '1= 300 KN/m2                 e= 0.42 σ '2= 500 KN/m2                e=0.30 Determine: The time to reach 75% consolidation  The excess water pressure value after 50 min of starting the test at 10 mm depth

Q: From the figure shown, H₁ = 0.60, H₂ = 0.90 m. and h = 0.45 m. The sand has a saturated unit weight…

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Q: A falling head permeability test on a specimen of fine sand (Area = 12.5 cm², Length = 10 cm)…

A: Let us first calculate the void ratio from the first test We have γd =γw*G1+e γd = dry unit weight…

Q: The hydraulic conductivity of a sand at a void ratio of 0.71 is 0.044 cm/sec. Estimate the hydraulic…

A: Given:Hydraulic conductivityk1=0.044 cm/s at a  void ratioe1=0.71e2=0.55

Q: From the figure shown, H₁ = 0.60, H₂ = 0.90 m. and h = 0.45 m. The sand has a saturated unit weight…

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Q: A cu test was performed on a 3.5cm diameter sand sample. A confining pressure of 2.0 kg/cm2 was…

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Q: During an oedometer test on a specimen of saturated clay, the thickness of the specimen decreased…

A: Oedometer test: This is a geotechnical investigation used for measuring properties of consolidation…

Q: There is an upward flow of 0.06 ml/s through a sand sample with a coefficient of permeability 3 ×…

A: Q = k i A    =k ×hL×A Where, Q  - Discharge = 0.06 x 10-6 m3/s k - Coefficient of permeability = 3…

Q: 6.5 Refer to Figure 6.4. For a constant head permeability test in a sand, the following values are…

A: Permeability = 0.0215 cm/secSeepage velocity = 0.068 cm/secExplanation:

Q: - A sand specimen is isotropically consolidated in a triaxial test apparatus under a cell pressure…

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Q: undrained triaxial test was conducted on a normally consolidated clay sample and the results are as…

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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: 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: (b) The results of a constant head permeability test for a fine sand having a diameter of 90 mm and…

A: Using formula

Q: CVE 331: Theoretical hydraulic conductivity calculation ki Problem 1: The hydraulic conductivity of…

A: To solve with the help of relation between hydraulic conductivity and void ratio

Q: 11.18 A 3-m thick layer of saturated clay (two-way drainage) under a surcharge loading underwent 90%…

A: Using formula to find coefficient of consolidation

Q: A consolidated un-drained triaxial test was performed on a specimen of saturated clay with a kg…

A: Given : σ3 = 2.0 kg/cm2 σ1 - σ3 = 2.8 kg/cm2 u = 1.8 kg/cm2 θ = 57 o This is a problem of Soil where…

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

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Q: For a laboratory consolidation test on a clay specimen (drained on both sides) the following results…

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Q: Q1: The void ratio in the consolidation test of soil sample changes from 1.99 to 1.54 when the…

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Q: Question 1 A consolidated drained (CD) triaxial test was carried out on a sand sample with the known…

A: A consolidated drained (CD) triaxial test was carried out on a sand sample with the known effective…

Q: Table 1 given below presents the results of a conventional oedometer consolidation test conducted on…

A: The compressibility of the soil takes place in two different methods namely consolidation and…

Q: Find the hydraulic conductivity coefficient of permeability, k.

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Q: Q6: A saturated clay sample was consolidated in the triaxial cell under a cell pressure of 150 KN/m.…

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Q: 2.11 A sand has the following: Do = 0.2 mm, D = 0.4 mm, and void ratio e = 0.6. a. Determine the…

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Q: constant

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Q: 100 cm² 10 : Cross-section area of sample: Hydraulic gradient Discharge collected : 10 cc/s The…

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Q: In laboratory consolidation tests on a clay specimen (drained on both sides), the following results…

A: The expression for hydraulic conductivity of clay is given by, Here, k is the hydraulic…

Q: Question attached

A: To determine: Hydraulic conductivity of clay.

Q: Q6: A saturated clay sample was consolidated in the triaxial cell under a cell pressure of 150 kN/m.…

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Q: The following are the results of a consolidation tests for a clay sample that drained on the top and…

A: Given data  P1= 2000 psf and e1= 0.75  P2= 4000 psf and e2= 0.71  Thickness of clay layer = 1 "…

Q: 2. A consolidated drained tri-axial was conducted on a normally consolidated clay. The results were…

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Q: A fine sand was tested in situ to give a coefficient of permeability of 3.7 x107 m/s. A sample of…

A: Step 1:Step 2: Step 3: Step 4:

Q: (i) At a vertical stress of 200 kPa, the void ratio of a 2.0 cm thick soil sample tested in an…

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Q: A constant-head test was conducted on a sample of soil  15 cm long and 60 cm2 in cross-sectional…

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Q: Triaxial undrained tests were performed on clay samples taken from the stratum as shown below. The…

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Q: Estimate the ratio of equivalent hydraulic conductivity

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Q: 4. For a normally consolidated clay, the following values are given. k (cm/sec) 0.45 x 106 e 0.78…

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Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.