Mechanics of Materials (MindTap Course List)
9th Edition
ISBN: 9781337093347
Author: Barry J. Goodno, James M. Gere
Publisher: Cengage Learning
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Chapter 8, Problem 8.3.11P
A standpipe in a water-supply system (see figure) is 12 ft in diameter and 6 in. thick. Two horizontal pipes carry water out of the standpipe; each is 2 ft in diameter and 1 in. thick. When the system is shut down and water fills the pipes but is not moving, the hoop stress at the bottom of the standpipe is 130 psi,
(a) What is the height h of the water in the standpipe?
(b) If the bottoms of the pipes are at the same elevation as the bottom of the stand pipe. what is the hoop stress in the pipes?
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The tank shown in Figure below is fabricated from t = 1/8 in steel plate. The
maximum longitudinal and circumferential stress caused by an internal
pressure of 125 psi (Ib/in²).
1. Drive the expressions for longitudinal and tangentional stresses?
2. Calculate the maximum longitudinal and circumferential stress caused by
an internal pressure?
Fw
Fw
Fp
Fp
XLV
1.5 ft
|1= 1/8 in
Fw
Fw Fw
Fw
0.75 ft
LONGITUDINAL STRESS, ₁
TANGENTIAL STRESS ,
2 ft
1.5ft
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A hollow pressurized sphere having radius r = 6.0 in and wall thickness t = 0.5 in is lowered into a lake (see figure). The compressed air in the tank is at a pressure of 20 psi (gage pressure when the tank is out of the water). At what depth D will the wall of the tank be subjected to a compressive stress of 100 psi?
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Chapter 8 Solutions
Mechanics of Materials (MindTap Course List)
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