Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 8, Problem 8.2P
To determine
Prove that the critical hydraulic gradient is
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6. Oil ( u = 0.478 Pa.s and v = 5.3 *10* mls) flows downward in a pipe which is
( 3 cm ) in diameter and has a slope of ( 30° ) with the horizontal. The pressure
gradient along the pipe is ( dp/dx = - 918.5 N/m'). Determine;
a. The volume flow rate.
b. The wall shear stress.
c. The maximum and average velocities.
d. The Reynolds number.
Ddoo
A fluid of viscosity 0.7 Ns/m2 and specific gravity 1.3 is
flowing through a circular pipe of diameter 100 mm. The
maximum shear stress at the pipe wall is given as 196.2
N/m2. Which of the following statements is/are correct for
the given condition? [Assume horizontal laminar flow]
1. The pressure gradient is -8000 N/m2 per m.
2. The average velocity is 3.5 m/s.
3. The Reynold's number is 650.
Chapter 8 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
Ch. 8 - Prob. 8.1PCh. 8 - Prob. 8.2PCh. 8 - Prob. 8.3PCh. 8 - Prob. 8.4PCh. 8 - Prob. 8.5PCh. 8 - Prob. 8.6PCh. 8 - Prob. 8.7PCh. 8 - Prob. 8.8PCh. 8 - Prob. 8.9PCh. 8 - The soil profile at a site consists of 10 m of...
Ch. 8 - Prob. 8.11PCh. 8 - Prob. 8.12PCh. 8 - Prob. 8.13PCh. 8 - Prob. 8.14PCh. 8 - A sand has Gs = 2.66. Calculate the hydraulic...Ch. 8 - Prob. 8.16PCh. 8 - A point load of 1000 kN is applied at the ground...Ch. 8 - Point loads of magnitude 9, 18, and 27 kN act at...Ch. 8 - Refer to Figure 8.13. The magnitude of the line...Ch. 8 - Refer to Figure 8.24. Determine the vertical...Ch. 8 - Consider a circularly loaded flexible area on the...Ch. 8 - A flexible circular footing of radius R carries a...Ch. 8 - The plan of a flexible rectangular loaded area is...Ch. 8 - Refer to Figure 8.26. The circular flexible area...Ch. 8 - Refer to Figure 8.27. The flexible area is...Ch. 8 - Prob. 8.26CTPCh. 8 - Prob. 8.27CTP
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