The lab apparatus shown in the figure maintains a constant head in both the upper and lower reservoirs. The soil sample is a silty sand, placed in a 200mm diameter container, having a specific gravity of 2.70 with a hydraulic conductivity k-0.1945 cm/sec. The moisture content of soil is 18.5% and the degree of saturation is 100%. The relationship between the specific gravity. moisture content, degree of saturation, and void ratio is given below: SGw- Se The level of water from the datum in the inlet and outlet portion is 46Omm and 240mm respectively. Calculate for the discharge of water in cublc cm per sec if distance d is 10Omm and distance Lis 220mm NLET OUTLET Sed Sample DATUM

The lab apparatus shown in the figure maintains a constant head in both the upper and lower reservoirs. The soil sample is a silty sand, placed in a 200mm diameter container, having a specific gravity of 2.70 with a hydraulic conductivity k-0.1945 cm/sec. The moisture content of soil is 18.5% and the degree of saturation is 100%. The relationship between the specific gravity. moisture content, degree of saturation, and void ratio is given below: SGw- Se The level of water from the datum in the inlet and outlet portion is 46Omm and 240mm respectively. Calculate for the discharge of water in cublc cm per sec if distance d is 10Omm and distance Lis 220mm NLET OUTLET Sed Sample DATUM

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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Name.. Q3 Water flows through the constant head setup in the laboratory, as shown in the figure, where two identical dense sand samples A and B are placed-one horizontally and the other vertically. The samples are 50 mm diameter and 100 mm in length. The water levels in the left and right sides are maintained at the levels shown, ensuring constant head throughout the test. The void ratio of the sand is 0.92 and the specific gravity of the grains is 2.69. If 165 g of water was collected in the bucket within 15 minutes, 1. What is the permeability of the soil? 2. What the pore water pressure and vertical effective stress at the mid height of sample B? OH 2 190 100+100 A = (50) 7 9 = 0.95 1963.5 100 mm crosesection מות 190 Datumn 40 mm 100 min Arey B.
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Q.permeability tests of soil.
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In a constant-head permeability test, a 60 cm3 of water was collected in 25 seconds with a head difference of “H” cm in a soil sample that has a diameter of 8 cm and length of 12 cm. Calculate the hydraulic conductivity. If the sample has a porosity of 60%, determine the average velocity and seepage velocity. Estimate the coefficient of permeability of a soil similar to the sample with a porosity of 45% from the results of this test.
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