A 15 μm clay mineral particle has terminal settling velocity of 0.202 mm with a density of 2.65 g / cm3 in 20 ˚C water. a. Would these particles be completely removed in a rectangular settling basin that has a 10-m width, a 30-m length and a 4-m depth given a flow rate of 2 MGD (million gallons day). b. What is the smallest diameter clay mineral particle that can be removed in the settling basin for the conditions above? c. What is the smallest diameter clay mineral particle that can be removed in the settling basin for winter conditions when the water temp is 5 ˚C

Q: A 20 m thick clay layer is sandwiched between a silty sand layer and a gravelly sand layer. The…

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Q: 2. A sample of coarse sand, 15 cm high and 5.5 cm in diameter, was tested in a constant-head…

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Q: 1. For a constant head laboratory permeability test on a fine sand, the following values are given:…

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Q: 2. A specimen (50 mm diameter and 100 mm height) of moist sand weights 3.31 N. Its dry weight is 3.0…

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Q: In a sample of clay, the void ratio is 0.73 and the specific gravity of the particles is 2.71. If…

A: Given Datae=0.73G=2.71S=92%=0.92 Now we know thatSe=wG0.92×0.73=w×2.71w=0.2478water content is…

Q: Problem 2 Assume a clay liner with the following properties: thickness is 0.9 m, hydraulic…

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Q: From the constant head permeability test arrangement shown, the following values are given: Void…

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Q: A pump test was conducted on a test well drilled into a confined aquifer, with the results showr **…

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Q: SITUATION 1: A sample of silty clay has a volume of 14.88 cm3, a total weight of 28.81 g, a dry…

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Q: Example 5: A sample of saturated clay had a volume of 97 cm³ and a mass of (0.202 kg). When…

A: GIVEN : saturated volume (Vsat) = 97 ccsaturated mass (msat) = 0.202 kgdry volume (Vd) =87 ccdry…

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

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Q: A sample of sand, 5 cm in diameter and 15 cm long, was prepared at a porosity of 60% in a…

A: Diameter = d = 5cm Length = L = 15cm ∆H = 30cm V = 40cm3 t = 5sec

Q: A cylindrical sample of saturated clay, 7.6 cm high and 3.8 cm in diameter weighs 149.6 grams. The…

A: Given Data  Size of sample = 3.8 cm diameter and 7.6 cm high  Weight of sample (WT) = 149.6 grams…

Q: The following are the results from the liquid limit tests for a soil: Number of Blows, N Moisture…

A: (a) The flow curve is shown below.

Q: If the breakthrough time for leachate to penetrate a 3-foot thick clay liner is 12 years, estimate…

A: Given- t=12yearsd=3foot=0.9144mη=0.18h=1ft=0.305m

Q: For a natural silty clay the liquid limit is 55,the plastic limit is 28,and the percent finer

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Q: HYDRAULIC CONDUCTIVITY PROBLEM 1: The results of a constant head permeability test for a fine sand…

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Q: An unconfined aquifer is 100 feet thick was evaluated using a field pumping test. The depth to…

A: In this problem I have drawn a diagram and wrote distance corresponding to their drawdown Since from…

Q: A field sample of an aquifer is packed in a test cylinder. The cylinder has a length of 120 cm and a…

A: In aquifer, ground water flows from one point to a different point due to hydraulic gradient. The…

Q: Assuming the groundwater table is at ground surface and the soil bulk unit weight is 20kN/m3. At 2m…

A: To find out the pore water pressure at a depth 2m from ground level.

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

A: The objective of the question is to determine whether the in situ testing was reflected by the…

Q: If the hydraulic conductivity of a sand at a void ratio of o.6 is o.03 cm/s, its value at the void…

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Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.