A sample coarse grained soil is 60mm. In diameter and 150mm long was tested in a constant-head apparatus. The saturated soil sample was prepared at a moisture content 40%, specific gravity =2.61. The total head was kept constant at 250mm and the amount of water is collected in 4 sec. was 50cm^3. The test temperature was 30°C a.) Compute the temperature correction factor. _________ b.) Compute the corrected coefficient of permeability in cm/sec _________ c.) Compute the interstitial velocity in cm/s _________

A sample coarse grained soil is 60mm. In diameter and 150mm long was tested in a constant-head apparatus. The saturated soil sample was prepared at a moisture content 40%, specific gravity =2.61. The total head was kept constant at 250mm and the amount of water is collected in 4 sec. was 50cm^3. The test temperature was 30°C a.) Compute the temperature correction factor. _____ b.) Compute the corrected coefficient of permeability in cm/sec _ c.) Compute the interstitial velocity in cm/s _____

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.8P

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Weight-Volume relationships

Weight is defined as the quantity of matter contained in a body. Weight can also be defined as the force acting on a body due to gravity. Mathematically, weight can be defined as-

Question

a.) Compute the temperature correction factor. _________

b.) Compute the corrected coefficient of permeability in cm/sec _________

c.) Compute the interstitial velocity in cm/s _________

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A sample coarse grained soil is 50mm. In diameter and 150mm long was tested in a constant-head apparatus. The soil sample was prepared at a void ratio of 1.5. The total head was kept constant at 300mm and the amount of water is collected in 4 sec. was 50cm^3. The test temperature was 22°Ca.) Compute the temperature correction factor.b.) Compute the corrected coefficient of permeability in cm/sec. c.) Compute the interstitial velocity.
Don't attempt wrong i will downvote.....A cylindrical soil sample, 7.3 cm in diameter and 16.8 cm in height, is tested in a constant-head permeability apparatus. A constant head of 75 cm is maintained during the test. After 1 minute of testing, a total of 945.7 gm of water was collected. The temperature was 20 oC. The void ratio of the soil was 0.43. Calculate the following: 1. The hydraulic gradient 2. The flow rate 3. The discharge velocity 4. The seepage force per unit volume 5. The coefficient of permeability
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soil هفصشبكطودذؤ
In falling head permeability test the initial head was 350 mm and the final head was 50 mm. The cross-sectional area of the burette was 200 mm2. The sample was 50 mm in diameter and 100 mm long. If the test took 8 hours and 45 minutes, what was the coefficient of permeability of the soil in m/s? a.7.15 x 10-7 m/s b.6.29 x 10-7 m/s c.7.89 x 10-7 m/s d.8.78 x 10-7 m/s e.5.69 x 10-7 m/s
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Subject: Geotechnical engineering - soil mechanics
3. A falling head permeability test is performed on a fine gravel soil. The soil sample has a length of 120mm and cross-sectional area of 600mm?.The water in the standpipe flowing into the soil is 0.60m above the top of the sample at the start of the test. It falls 50mm in 30 min. The standpipe has a cross- sectional area of 200mm?. a. Make a sketch of the described condition. b. What is the coefficient of permeability in millimeters per second? c. What is the coefficient of permeability in feet per minute? d. On the basis of the calculated value for k, what is the probable soil type?
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