sample of sand, 5 cm in diameter and 15 cm long, was prepared at a porosity of 60% in a constant-head apparatus. The total head was kept constant at 30 cm and the amount of water collected in 5 seconds was 40 cm^3. The test temperature was 20 deg C. Calculate the hydraulic conductivity. a. 6.7 x 10^-1 b. 3.47 x 10^-2 c. 5.0 x 10^-2 d. 2.0 x 10^-1

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: setup in the laboratory, as shown in the igure, where two identical dense sand amples A and B are…

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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: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

A: Given  Trial no. of blow (N) water content (w)% 1 11 53.9 2 15 50.6 3 23 48.1 4 30 46 5…

Q: Water flows at the rate of 0.09 ml/s in an upward direction through a sand sample with a coefficient…

A: Given data: Discharge = 0.09 ml/s Q=0.09 ml/s1 ml= 1000 mm3Q=90 mm3/s coefficient of permeability =…

Q: 5. A falling head permeability was performed on a clayey soils. The initial hydraulic head was 900mm…

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Q: meter tube of uniform diameter is filled with three layers of different soils (Figu conductivities…

A: Given:- k1=1 x 10 -5m/sk2=2×10-5m/sK3=0.5×10-5m/sTo find:-pressure head

Q: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

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Q: a. How high will the water rise in the piezometer immediately after the application of the surface…

A: Given data : This is a problem of Geo-Tech Engineering.

Q: Soll layers are shown as the right figure. Given: H2m, k 10 cmsec H:- 3m, k- 32 x 10 cmsec Hy=4m,…

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Q: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

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Q: H, H, k, ered soil is shown in the figure above. Estimate the equivalent hydraulic conductivity for…

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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: The hydraulic conductivity depends predominantly on void ratio unit weight of the fluid organic…

A: 1. Hydraulic conductivity majorily depends upon the type of soil found in any region. It is affected…

Q: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

A: optiona (a) is the correct answer

Q: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

A:

Q: glass container with pervious bottom containing fine sand in loose state (void ratio = 0.8) is…

A: Given data- Void ratio(e) = 0.8 specific gravity of sand particles (G) =2.65 Area (A)  = 10 cm²…

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: Question A dry sand specimen is put through a triaxial test. The cell pressure is 50 kPa and the…

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Q: In an oedometer test on a saturated specimen (G,- 2.70, the initial thickness Ho-2.0cm), when the…

A: According to given data In an oedometer test on a saturated specimen (G,- 2.70, the initial…

Q: when flowing through the same rock at 20°C? want weight = 8.44 kN/m³) 6.10 The maximum dry unit…

A: Given data - Relative compaction = 90% Max. dry unit weight in lab = 16 KN/m3 Gs = 2.7 k1 = 0.03…

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Q: Consider the stratified soil sample shown below with k₁ = 0.01 cm/sec, k₂ = 0.02 cm/sec, H₁ = 10 cm,…

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Q: A stratified soil has the following properties: h1 = 1.75m h2 = 2.5m h3 = 4.35m k1 = 2.25E-03 cm/sec…

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Q: A course sand sample is placed in the constant permeameter test. What is the coefficient of…

A: Using Darcy law  Q=kia

Q: 1. (30 pts) The soil profile shown below consists of 10 meters of sandy silt overlying gravel. The…

A: Step 1:Step 2: Step 3: Step 4:

Q: Consider the upward flow of water through a layer of kaolinite in a tank. The total thickness of the…

A: Note- Since we only answer up to 3 sub-parts, we’ll answer the first3. Please resubmit the question…

Q: Please determine the hydraulic conductivity of soil sample. The length of soil is 200 cm, outflow…

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Q: the answer as soon as possible

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Q: Permeability of the aquifer is ____ m/s

A: To find depth: Determine the saturated thickness of aquifier before pumping ; h0 = depth of surface…

Q: Given: H₁ = 1.10 m, H₂ = 2.20 m, h = 1.30 m, void ratio of sand e = 0.62, specific gravity of soil…

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Q: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

A:

Q: ATTENTION!!!! PROVIDE A DIFFERENT SOLUTION!!! DO NOT SEND THE SAME SOLUTION EACH TIME!!! YOUR…

A: Yes i will help you understand part B.

Q: Q3 Water flows through the constant head setup in the laboratory, as shown in the figure, where two…

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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 data in question  Hydraulic conductivity at 0.71 void ratio= 0.044 cm/sec Void ratio 0.55 To…

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.