Solid Waste Engineering: A Global Perspective, Si Edition
3rd Edition
ISBN: 9781305638600
Author: William A. Worrell, P. Aarne Vesilind, Christian Ludwig
Publisher: Cengage Learning
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Chapter 3, Problem 3.21P
To determine
Least expensive transportation alternative
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Grade is being established to the bottom of a footing that is 24” thick. The elevation of thetop of the footing is 102.33’. the elevation of the existing grade is 106.14’. the backsight of thesurveying instrument on a benchmark of 100.00’ is 6.78’. what is the correct reading for the rodat the bottom of the footing?
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
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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
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Solid Waste Engineering: A Global Perspective, Si Edition
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- 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 6.85arrow_forward6.79 A cart is moving along a railroad track at a constant velocity of 5 m/s as shown. Water (p = 1000 kg/m³) issues from a nozzle at 10 m/s and is deflected through 180° by a vane on the cart. The cross-sectional area of the nozzle is 0.002 m². Calculate the resistive force on the cart. 5 m/s D 10 m/s Nozzle Problem 6.79arrow_forwardOil of specific gravity 0.800 acts on a vertical triangular area whose apex is in the oil surface. The triangle is 9 ft high and 12 ft wide. A vertical rectangular area 8 ft high is attached to the 12-ft base of the triangle and is acted upon by water. Find the magnitude and position of the resultant force on the entire area.arrow_forward
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