A 3 m thick soil has coefficient of permeability 3 x10^-7 m/s. A separate test porosity 40% and bulk unit weight 21 kN/m^3 at a moisture content of 31%. Determine the flow to maintain critical conditions? Assume unity unit area.   a. 6.2 x10^-7 m^3/s/m^2  b. 1.0 x 10^-7 m^3/s/m^2 c.3.1 x 10^-7 m^3/s/m^2  d. 5.7 x 10^-7 m^3/s/m^2

Q: someone can help me in this one please.   The moist unit weight of soil is 19.2 KN/m^3. Given that…

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Q: 5. To determine the grain size distribution of fine-grained soil (smaller than 0.075 mm), Hydrometer…

A: 5- To determine the grains size distribution of fine grained soil(smaller than0.075mm),hydrometer…

Q: 1. Following are the relationships of e and o' for a clay soil: e o' (kN/m²) 1 20 0.97 50 0.85 180…

A: The given data is shown below:         H=1.37mσo=70 kN/m2σ'o+∆σ'=200 kN/m2

Q: A silty sand fill 4.5 meters thick and an estimated density of 20 kN/m³ is to be placed over 4.0 m…

A: Cv = 0.79 m2/yr = 20 kN/m3

Q: 1. For the soil system presented below, calculate and draw diagrams of distributions of the total…

A: Answer  We know that effective stress(σ') is given by the difference between the Total stress(σ) and…

Q: 6.5 A site is underlain by about 14 m of hydraulic fill sand with the following properties. Grain…

A: Given data:- Saturated unit weight = 18.8 kN/m3 Average uncorrected SPT resistance, N = 6 blows/ft.…

Q: Laboratory tests performed on a saturated alluvial subgrade soil gave the following information: In…

A: Given: water content w=11.9% Specific gravity G=2.65 D30=8 mmD60=20 mmD10=4.76 mm

Q: A soil has a discharge velocity of 6×10 m/sec and a void ratio of .50. Its seepage velocity is. A B…

A: Discharge velocity- V=6×10-7 m/s. Void ratio e=0.50, To Find- The value of the seepage velocity Vs.

Q: 7. Assume the water table drops 3 feet for the soil profile shown. What settlement will occur?…

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Q: Shear Strength of Soil The following are the results of two consolidated-drained triaxial tests on a…

A: To Determine Shear strength parameters of the soil.

Q: The hydraulic gradient for quick condition is equal to 1.13 with 0.41. The moist unit weight of…

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Q: A sample of moist soil has a water content of 26%, a void ratio of 1.1, and a Gs of 2.7 a. Draw the…

A: Water content(w) = 26%Void ratio(e) = 1.1Specific gravity of soil solids(Gs)= 2.7

Q: 1. Develop the relationship a. G + Se y = 1+e from a block diagram expressed in terms of G, e, S and…

A: Consider the figure shown below. Here, we can see a soil mass represented as a phase/block diagram.…

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.