Engineering Fundamentals
6th Edition
ISBN: 9780357112144
Author: Saeed Moaveni
Publisher: MISC PUBS
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Chapter 18, Problem 15P
A jet plane taking off creates a noise with a magnitude of approximately 125 dB. What is the magnitude of the pressure disturbance (in µPa)?
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answer.
1. A wall footing is to be constructed on a clay soll 1.4 below the ground. The footing is to support a wall that
imposes a load of 130 kN per meter of wall length. Considering general shear failure, determine the following:
130 kN/m
4m
a. Footing width if the factor of safety is 3.
b. Ultimate bearing capacity if B = 0.95 m.
c. New factor of safety.
Y = 17.92 kN/m²
c = 14.5 kPa
$ -30°
2. A square footing shown has a dimension of 1.5 mx 1.5 m and has its bottom 2 m below the ground surface.
The groundwater table is located at a depth of 3 m below the ground surface. Assume a general shear failure.
Determine the following:
L
2 m
y = 16 kN/m³
c = 14.5 kPa
= 28°
3 m
1.5 m
Ysa1 = 18.5 kN/m³
a. Ultimate bearing capacity of the soll beneath the footing (in kPa).
b. Allowable bearing capacity if it has a factor of safety of 3 (in kPa).
C. Allowable load that the…
B2. For the truss below, determine all member forces. Hint: see the provided slide with the
problem set. P₁ = 12 kip and P₂ = 6 kip (20 pts).
P₁
16 ft
D
8 ft
8 ft
8 ft
B
K
E
8 ft
8 ft
8 ft
H
8 ft
В
G
1000
8 ft
14.1 A beam of rectangular cross section is 125 mm wide
and 200 mm deep. If the maximum bending moment
is 28.5 kN⚫m, determine (a) the maximum tensile and
compressive bending stress, and (b) the bending stress
25 mm from the top of the section.
14.2 A rectangular beam 50 mm wide and 100 mm deep is
subjected to bending. What bending moment will
cause a maximum bending stress of 137.9 MN/m²
(MPa)?
14.3 Determine the bending moment in a rectangular
beam 3 in. wide and 6 in. deep if the maximum bend-
ing stress is 15,000 psi.
Chapter 18 Solutions
Engineering Fundamentals
Ch. 18.2 - Prob. 1BYGCh. 18.2 - Prob. 2BYGCh. 18.2 - Prob. 3BYGCh. 18.2 - Prob. 4BYGCh. 18.2 - Prob. BYGVCh. 18.3 - Prob. 1BYGCh. 18.3 - Prob. 2BYGCh. 18.3 - Prob. 3BYGCh. 18.3 - Prob. BYGVCh. 18.4 - Prob. 1BYG
Ch. 18.4 - Prob. 2BYGCh. 18.4 - Prob. 3BYGCh. 18.4 - Prob. 4BYGCh. 18.4 - Prob. BYGVCh. 18.5 - Prob. 1BYGCh. 18.5 - Prob. 2BYGCh. 18.5 - Prob. 3BYGCh. 18.5 - Prob. 4BYGCh. 18.5 - Prob. BYGVCh. 18.6 - Prob. 1BYGCh. 18.6 - Prob. 2BYGCh. 18.6 - Prob. 3BYGCh. 18.6 - Prob. 4BYGCh. 18.6 - Prob. BYGVCh. 18.7 - Prob. 1BYGCh. 18.7 - Prob. 2BYGCh. 18.7 - Prob. BYGVCh. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - In Chapter 12, we explained that the electric...Ch. 18 - The deflection of a cantilevered beam supporting...Ch. 18 - Prob. 6PCh. 18 - Prob. 7PCh. 18 - Prob. 8PCh. 18 - Prob. 9PCh. 18 - Prob. 10PCh. 18 - Prob. 11PCh. 18 - Prob. 12PCh. 18 - Prob. 13PCh. 18 - Prob. 14PCh. 18 - A jet plane taking off creates a noise with a...Ch. 18 - Prob. 16PCh. 18 - Prob. 17PCh. 18 - Prob. 18PCh. 18 - Prob. 19PCh. 18 - Prob. 20PCh. 18 - Prob. 21PCh. 18 - Prob. 22PCh. 18 - Prob. 23PCh. 18 - Prob. 24PCh. 18 - Prob. 25PCh. 18 - Prob. 26PCh. 18 - Prob. 27PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - Prob. 30PCh. 18 - Prob. 31PCh. 18 - Prob. 32PCh. 18 - Prob. 33PCh. 18 - Prob. 34PCh. 18 - Prob. 35PCh. 18 - Prob. 36PCh. 18 - Prob. 37PCh. 18 - Prob. 38PCh. 18 - Prob. 39PCh. 18 - Prob. 40PCh. 18 - Prob. 41PCh. 18 - Prob. 42PCh. 18 - Prob. 43PCh. 18 - Prob. 44PCh. 18 - Prob. 45P
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- B3. For the Howe truss below, assume all members are pin connected and take P₁ = 5 kN and P₂ = 10 kN: a. Determine all member forces (16 pts). b. Use a section cut to verify your answers for members GF, GD, and CD (4 Pts) P₁ A H 500 8 0000 B 0000] 2 m m 2 m 3 m B E D marrow_forwardI need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forwardI need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forward
- I need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forwardI need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forwardI need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forward
- I need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forwardI need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forwardI need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!arrow_forward
- B1.For the truss below, take P₁ = 4 kip and P₂ = 3 kip: a. Determine all member forces. Hint: first find zero-force members (16 pts). b. Use a section cut to verify your answers for members JI, BI, and BC (4 Pts) В 18 ft 6 ft H B 6 ft C 8 ft D p81 8 ft E 8 ft 6 ft F6ftarrow_forwardQ13: The line CD, C(xc, 6), D(6,yd), the point D is on the right of point C, the value of horizontal effect H(3,0) is on the right of point C, the vertical effect V(0, -2) right of H. the distance between projection of the points H, V is 5cm, Find: 1- The value of xc and yd. 2- The distance between projections of the points C, D. 3- The true length (T.L.) of CD. 4- The angles a and ẞ. 5- A point F in the middle of line CD, find F (xf, yf).arrow_forwardQ9: The straight line AB of true length (8) cm, having the following data: A (5, ya) & B (xb, yb), the point B is on the left of point A, the inclination of the line to the horizontal plane (H.P) is 30° (a) it Horizontal trace H (-3, 0), and point H is on the left of point A with distance (16) cm. Draw the Plan & Elevation of the line AB and determine the following: 1. The missed coordinates: ya, xb, yb. 2. The coordinates of the vertical trace (V). 3. The inclination of the line to the vertical plane (V.P) (B). 4. The distance between projections of the points A and Barrow_forward
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Understanding Stresses in Beams; Author: The Efficient Engineer;https://www.youtube.com/watch?v=f08Y39UiC-o;License: Standard Youtube License