Find the effective average permeability of the deposit in the vertical direction (mm/s).

Q: If porosity is 0.3 find void ratio.

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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: Q5): For the soil profile shown in figure, the piezometer reading at point (A) at time (t) after…

A:

Q: Determine vertical permeability of soil

A: Given data : k1=10-3  cm/seck2=2×10-4  cm/seck3=10-5  cm/seck4=2×10-3  cm/sec

Q: coefficient of consolidation of 20 ft2 /yr is given for the singly-drained clay layer. This layer…

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Q: Choose one of the following

A: Permeability of sand is bigger than clay . The reason behind is the pore space . Since the water can…

Q: Determine the value of porosity if void ratio is 0.262

A: The given question is related with geotechnical engineering . In this question we are provided with…

Q: Determine the value of void ratio if porosity 0.423

A: Introduction : The given question is related with soil mechanics . In this question we are provided…

Q: ive permeability functions, compute the ansition zone as S, varies from 80% to S ing values:

A: 2 T 75 dynes /cm=75×10-5/10-2 = 75×10-3 N/m     2πrT cos θ =(πr2 h) ρg⇒ r =2Tcosθhρg…

Q: Given that the clay layer drains on both its bottom and top sides as shown (a) Determine the…

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Q: The effective grain size of a loose uniform sand is 0.06 cm. Find the coefficient of permeability of…

A: given- Effective grain size-D10=0.06 cm

Q: Question attached

A: To determine: Hydraulic conductivity of clay.

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: 2.10 A soil stratum is 10 m thick with pervious stratum on top and bottom. The time required for 50%…

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Q: A bed of sand consists of three horizontal layers of equal thickness. The value of Darcy's 'k' for…

A: We have to find the ratio of the permeability

Q: 1.) DERIVED THE FORMULA OF THE VOID RATIO, 2) DERIVED THE FORMULA OF POROSITY, n = V/v = W - W

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Q: Define Drained versus undrained deformation

A: If water is not permitted to flow in or out of the soil, the stress path is called an undrained…

Q: Determine void ratio Porosity=0.142

A: Given data : The value of porosity=n n=0.142   Required : Void ratio

Q: B. What is effective stress (give equation). If the depth is 1km, the bulk density is 2500kg/m3 and…

A: Given data: d=1 kmγb=2500 kg/m3μ=20 MPa

Q: A soil stratum is 10 m thick with pervious stratum on top and bottom. The time required for 50%…

A: Given data- Thickness of soil stratum=10 m Coefficient of permeabilityK=10-7 cm/s, Coefficient of…

Q: Determine the void ratio if porosity 0.531

A: The given question is related with geotechnical engineering . In this question we are provided with…

Q: For a normally consolidated clay soil, the following values are given Void Ratio K (cm/sec) 0.302 x…

A:

Q: Determine maximum principal stress

A: Given data : Normal stress in X direction σX=-11500 psi Normal stress in Y direction σY=-18250 psi…

Q: During a falling head test, the head fell from 80cm to 65cm in 83 seconds. The specimen was 5cm in…

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Q: Calculate the value of the effetive stress at the bottom of the given soil.

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Q: A bed of sand consists of three horizontal layers 10.0 of equal thickness. The value of Darcy's 'K'…

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Q: Determine  the void ratio if porosity is  0.334

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Q: A soil stratum is 10 m thick with pervious stratum on top and bottom. The time required for 50%…

A:

Q: A clay sample of thickness 50 mm undergoes 50% consolidation in 15 minutes when drainage is allowed…

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Q: In sieve analysis, sand is O passing No.4 and retained at No.200 O passing No 200 O retained at No.4…

A: In seive analysis Sand passes through 4.75 mm seive i.e No.4 and is retained on 0.075 mm seive i.e…

Q: Find the value of Porosity if void ratio is 0.69

A: Given data : The value of porosity=n n=0.69   To find : Void ratio

Q: Calculate the saturated density from void ratio 0.8.

A: The saturated density of soil is defined as the bulk density of soil when the soil is below water…

Q: Determine the value of void ratio if porosity  0.79

A:

Q: Given for a soil stratum: Coefficient of permeability in horizontal direction = 3 m/day Coefficient…

A: given Coefficient of permeabiity in horizontal direction-kh=3 m/dayandCoefficient of permeabiity in…

Q: Determine the void ratio if porosity 0.137

A: The given question is related with geotechnical engineering . In this question we are provided with…

Q: Derive relation between void ratio and porosity and draw graph for degree of saturation.

A: Void ratio denoted by (e)  And porosity is denoted by (n)

Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.