Please explain part 1 (ii) of the question given. 1) i) A 6 inch diameter well that fully penetrates a 40ft thick open aquifer is pumped at a rate of 100 gpm. The drawdown in the well is 22ft when a steady water level is established. The drawdown in a well 152ft distant is 12ft. Estimate the coefficient of permeabiliity of the soil deposit.  Answer of permeability is K= 9.88 x10-4 ft/sec. ii) Discuss the validity of the answer obtained in 1( i ) and suggest how would you improve the test data obtained to produce a better value of k. Why?

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:

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A: Given  Specific gravity  G=2.7  and water content w=30%=0.30for saturated sample     S=1cross…

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A:

Q: 3. (Modified version of Problem 5.39 in the text). An unconfined sand aquifer with a surface area of…

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A:

Q: A pump test was conducted on a test well drilled into a confined aquifer that is 4.80 m thick. Two…

A:

Q: 7.8 The following data are for a falling-head permeability test: • Length of the soil sample = 140…

A:

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A: Given, w=38.9%Gs=2.34H=20fth=13.8 m

Q: a. Height of capillary rise h. b. Effective stress at point A. c Effective stress at point B d.…

A:

Q: b) A water supply well has been drilled to a depth of 10m in the soil profile given in Question 1…

A: Depth of well (H) = 10 mCo- efficient of permeability (k) = 0.1 mm/s = 0.1 x 10-3 m/sRadial…

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A:

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A:

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A: The given data is: Length of sample (L) = 15 cm Area of the sample (A) = 60 cm2 Quantity of water…

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: 7.22 Refer to Figure 7.24. The following data were collected during the field per- meability…

A:

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

A:

Q: The results of a constant-head permeability test for a sand sample having a sectional area of…

A: Using Darcy's law

Groundwater Flow

The term groundwater refers to the water which is found beneath the earth's surface. Pores present in the soil and rocks with fractures make a passage for rainwater to enter the earth's surface and deposit as groundwater. The flow nature and direction of groundwater under the earth's surface directly impacts the strength and compressibility of the soil, which reflects its ability to support structural loads.