Question 2:* A soil sample 10 cm in diameter is placed In a tube 1 m long. A constant supply of water is allowed toflow into one end of the soil at A and the outflow at B is collected by a beaker. The average amount ofwater collected is 1 cubic centimeter every 10 seconds. The tube is inclined and has a head differenceof 1.2 m. Determine the followingo Hydraulic Gradiento Seepage velocity if porosity is 0.375o Hydraulic conductivityFlow RateDischarge Velocity

Given data: Diameter =10 cm length =1 m amount of water collected =1 cm3 time=10 sec head…

Answered: Question 2: * A soil sample 10 cm in…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The data from a falling-head test on a silty clay are: Cross sectional area of soil = 1000 mm^2 Length of soil sample = 200 mm Area of stand pipe = 40 mm^2 Head difference at time t = 0 is 500 mm Head difference at time t = 3 min is 300 mm a) Determine the hydraulic conductivity of the soil in cm/sec. b) What is the head difference at time t = 100 sec in mm
A falling head permeability test was run on a soil sample 9.60cm in diameter and 10cm long. The head at the start of the test was 90cm. The coefficient of permeability of the soil was found to be 5x10^-6 cm/s. The diamter of the stand pipe was 1 cm, What is the rate of flow after 30mins? * Your answer
From the constant head permeability test, the following values are given: Void ratio of specimen 0.46 Length of soil sample 450 mm Constant head difference 700 mm Water collected in a period of 180 seconds Cross-sectional area of soil sample 3.54 x 10-4 m³ 2.26 x 10-3 m² a.) Determine the coefficient of permeability in m/hour. b.) Compute the discharge velocity in mm/s. c.) Compute the seepage velocity in mm/s. d.) If the test was done at 24°C, what is its corrected coefficient of permeability?
PROBLEM D For a falling head laboratory test, the following are the given values: • Length of soil specimen 480.0 mm Initial head 700.00 mm = Final head = 395.00 mm Duration of test = 5.5 mins 0.97 sq.cm Area of standpipe Area of specimen 18.0 sq.cm A. Compute for the hydraulic conductivity of the soil in cm/sec. B. Determine the head di fference at t = 3.50 mins.
In a constant head permeability test in the laboratory as shown in Figure Q2(e), the data is recorded in Table Q2(b). The void ratio of the soil specimen is 0.46. Determine; (i) Hydraulic conductivity, k, of the soil in cm/sec. (ii) Discharge velocity in cm/sec.
Problem (2) The following data are for a variable head permeability test: Area of soil specimen=1200mm? Length of the soil specimen = 150mm Area of the standpipe = 1.3cm² At time t=0, head difference = 750mm At time t=2min, head difference = 500mm 2 %3D a) Find the hydraulic conductivity of the soil in cm/min.
A cylindrical soil sample with length = 15cm and diameter = 4cm was taken from a site where a groundwater contamination piume was found. The sample was tested in the lab to determine its hydraulic conductivity. A hydraulic gradient of 0.05 was applied across the sample, and a flow rate of 0.025 cm³/sec was measured. Calculate the hydraulic conductivity of the soil sample using Darcy's law.
(CE Board Exam November 2018) An experiment to determine the permeability of a soil sample was conducted. The permeameter in a falling head permeability test set-up involves a cylindrical soil sample 100mm in diameter and a height of 200mm. The hydraulic head in the 10-mm diameter standpipe through which the test water passed drop from 1m to 600mm in one minute of observation. In that duration, the water collected in the graduate was recorded at 2L. From these data, a. Evaluate the coefficient of permeability of the soil sample in cm/sec b. Determine the time it takes for the water to drop from 1meter to 750mm c. What will be the hydraulic head in the standpipe after 2 minutes
For a falling-head permeability test, the following values are given:• Length of specimen 8 in.• Area of soil specimen 1.6 in.2• Area of standpipe 0.06 in.2• Head difference at time t 0 20 in.• Head difference at time t 180 sec 12 in.Determine the hydraulic conductivity of the soil in in./sec
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Don't mind the circle Ps. Not graded
A constant head permeability test was carried out on a cylindrical sample of sand 10 cm diameter and 15 cm height. 160 cm³ of water was collected in 31.75 sec under a head of 30 cm. 1. Compute the coefficient of permeability in cm/s. 2. Compute the velocity of flow in m/s.

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