Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 15, Problem 11P
To determine
(a)
Design speed for the horizontal curve of a two-lane road in mountainous terrain.
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6.48 This "double" nozzle discharges water (p = 62.4 lbm/ft³) into the atmosphere at a rate of 16 cfs. If the nozzle is lying in a horizontal plane, what X-component of force acting through the flange bolts is required to hold the nozzle in place? Note: Assume
irrotational flow, and assume the water speed in each jet to be the same. Jet A is 4 in. in diameter, jet B is 4.5 in. in diameter, and the pipe is 1.4 ft in diameter.
A
30°F
B
Problem 6.48
Xx
6-1 For the rectangular beam shown in Fig. P6-1,
(a) Draw a shear-force diagram.
(b) Assuming the beam is uncracked, show the
direction of the principal tensile stresses at
middepth at points A, B, and C.
(c) Sketch, on a drawing of the beam, the inclined
cracks that would develop at A, B, and C.
10 kips
A
B
1 kip/ft
7.5 ft
Fig. P6-1
+
7.5 ft
6 ft
10 kips
6.85 A reducing pipe bend is held in place by a pedestal as shown. There are expansion joints at sections 1 and 2, so no force is transmitted through the pipe past these sections. The pressure at section 1 is 20 psig, and the rate of flow of water (p = 62.4
Ibm/ft³) is 2 cfs. Find the force and moment that must be applied at section 3 to hold the bend stationary. Assume the flow is irrotational, and neglect the influence of gravity.
6 in. diameter
+
24 in.
24 in.
(3
4 in. diameter
Problem 6.85
Chapter 15 Solutions
Traffic and Highway Engineering
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