Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Chapter 7, Problem 7.14P
To determine
The difference between high heat value (HHV) and low heat value (LHV) and the reason high heat value is greater than low heat value.
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1.2 m
BX B
70 kN.m
y = 16 kN/m³
c' = 0
6'-30°
Water table
Ysat
19 kN/m³
c' 0
&' = 30°
A square foundation is shown in the figure above. Use FS = 6, and determine the size of the foundation. Use the Prakash and Saran theory (see equation and figures below). Suppose that F =
450 kN.
Qu
= BL
BL[c′Nc(e)Fcs(e) + qNg(e)Fcs(e) + ·
1
YBN(e) F
2
7(e) Fra(e)]
(Enter your answer to two significant figures.)
B:
m
Na(e)
60
40-
20-
e/B=0
0.1
0.2
0.3
.0.4
0
0
10
20
30
40
Friction angle, ' (deg)
Figure 1 Variation of Na(e) with o'
Ny(e)
60
40
20
e/B=0
0.3
0.1
0.2
0.4
0
0
10
20
30
40
Friction angle, ' (deg)
Figure 2 Variation of Nye) with o'
K/S
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Chapter 7 Solutions
Solid Waste Engineering
Ch. 7 - Prob. 7.1PCh. 7 - The ideal equation for the combustion of cellulose...Ch. 7 - You serve as the president of XYZ corporation,...Ch. 7 - Prob. 7.4PCh. 7 - Prob. 7.5PCh. 7 - Prob. 7.6PCh. 7 - Prob. 7.7PCh. 7 - Prob. 7.8PCh. 7 - Prob. 7.9PCh. 7 - Cellulose is to be burned in a waste-to- energy...
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- 1.0 m (Eccentricity in one direction only)=0.15 m Call 1.5 m x 1.5m Centerline An eccentrically loaded foundation is shown in the figure above. Use FS of 4 and determine the maximum allowable load that the foundation can carry if y = 18 kN/m³ and ' = 35°. Use Meyerhof's effective area method. For '=35°, N = 33.30 and Ny = 48.03. (Enter your answer to three significant figures.) Qall = kNarrow_forwardWhat are some advantages and disadvantages of using prefabrication in construction to improve efficiency and cut down on delays?arrow_forwardPROBLEM:7–23. Determine the maximum shear stress acting in the beam at the critical section where the internal shear force is maximum. 3 kip/ft ΑΟ 6 ft DiC 0.75 in. 6 ft 6 in. 1 in. F [ 4 in. C 4 in. D 6 in. Fig of prob:7-23 1 in. 6 ft Barrow_forward
- 7.60 This abrupt expansion is to be used to dissipate the high-energy flow of water in the 5-ft-diameter penstock. Assume α = 1.0 at all locations. a. What power (in horsepower) is lost through the expansion? b. If the pressure at section 1 is 5 psig, what is the pressure at section 2? c. What force is needed to hold the expansion in place? 5 ft V = 25 ft/s Problem 7.60 (2) 10 ftarrow_forward7.69 Assume that the head loss in the pipe is given by h₁ = 0.014(L/D) (V²/2g), where L is the length of pipe and D is the pipe diameter. Assume α = 1.0 at all locations. a. Determine the discharge of water through this system. b. Draw the HGL and the EGL for the system. c. Locate the point of maximum pressure. d. Locate the point of minimum pressure. e. Calculate the maximum and minimum pressures in the system. Elevation 100 m Water T = 10°C L = 100 m D = 60 cm Elevation 95 m Elevation 100 m L = 400 m D = 60 cm Elevation = 30 m Nozzle 30 cm diameter jet Problem 7.69arrow_forwardA rectangular flume of planed timber (n=0.012) slopes 0.5 ft per 1000 ft. (i)Compute the discharge if the width is 7 ft and the depth of water is 3.5 ft. (ii) What would be thedischarge if the width were 3.5 ft and depth of water is 7 ft? (iii) Which of the two forms wouldhave greater capacity and which would require less lumber?arrow_forward
- Figure shows a tunnel section on the Colorado River Aqueduct. The area of the water cross section is 191 ft 2 , and the wetted perimeter is 39.1 ft. The flow is 1600 cfs. If n=0.013 for the concrete lining, find the slope.arrow_forward7.48 An engineer is making an estimate for a home owner. This owner has a small stream (Q= 1.4 cfs, T = 40°F) that is located at an elevation H = 34 ft above the owner's residence. The owner is proposing to dam the stream, diverting the flow through a pipe (penstock). This flow will spin a hydraulic turbine, which in turn will drive a generator to produce electrical power. Estimate the maximum power in kilowatts that can be generated if there is no head loss and both the turbine and generator are 100% efficient. Also, estimate the power if the head loss is 5.5 ft, the turbine is 70% efficient, and the generator is 90% efficient. Penstock Turbine and generator Problem 7.48arrow_forwarddesign rectangular sections for the beam and loads, and p values shown. Beam weights are not included in the loads given. Show sketches of cross sections including bar sizes, arrangements, and spacing. Assume concrete weighs 23.5 kN/m'. fy= 420 MPa, and f’c= 21 MPa.Show the shear and moment diagrams as wellarrow_forward
- Draw as a 3D object/Isometricarrow_forwardPost-tensioned AASHTO Type II girders are to be used to support a deck with unsupported span equal to 10 meters. Two levels of Grade 250, 10 x 15.2 mm Ø 7-wire strand are used to tension the girders with 5 tendons per level, where the tendons on top stressed before the ones on the bottom. The girder is simply supported at both ends. The anchors are located 100 mm above the neutral axis at the supports while the eccentricity is measured at 400 mm at the midspan. The tendon profile follows a parabolic shape using a rigid metal sheathing. A concrete topping (slab) 130 mm thick is placed above the beam with a total tributary width of 4 meters. Use maximum values for ranges (table values). Assume that the critical section of the beam is at 0.45LDetermine the losses (friction loss, anchorage, elastic shortening, creep, shrinkage, relaxation). Determine the stresses at the top fibers @ critical section before placing a concrete topping, right after stress transfer. Determine the stress at the…arrow_forwardPlease solve this question in hand writting step by step with diagram drawingarrow_forward
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