Foundation Design: Principles and Practices (3rd Edition)
3rd Edition
ISBN: 9780133411898
Author: Donald P. Coduto, William A. Kitch, Man-chu Ronald Yeung
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 2.12QPP
If the ASD design method has worked satisfactorily for over 50 years, what’s the value in changing to the LRFD method?
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Students have asked these similar questions
Consider, M people (aka pax) who want to travel by car from O to D. They all start working at
D at Q (e.g., Q-8am). If a person departs at time t, assume the time needed to go from O to D
is given by c(t)=A+Bx(t), where x(t) is the flow of people departing at time t [car/unit of time].
In addition, a is the penalty for being early at work (E(t) is how early the person arrived when
departing at time t), and ẞ is the penalty for being late at work (L(t) is how late the person
arrived when departing at time t). Assume 0 < a < 1 < ß. Further assume the departure time
choice problem under the equilibrium conditions. Prove that the arrival time of people who
depart when most of the M people start their trips is equal to Q.
a.
A
b.
A
3. Sketch normal depth, critical depth and the
water surface profile. Assume at A and B the
water is flowing at normal depth. Label and
Identify all curves (i.e., M1, S2, etc.)
Yn > Ye
Уп Ye
Уп> Ус
y
2. Design a trapezoidal ditch to carry Q = 1000 cfs. The
ditch will be a lined channel, gravel bottom with sides
shown below on a slope of S = 0.009. The side
slopes of the 20-ft wide ditch will be 1 vertical to 3
horizontal.
a) Determine the normal depth of flow (yn) using the
Normal value for Manning's n.
b) If freeboard requirements are 25% of the normal
depth, how deep should the ditch be constructed?
c) Classify the slope.
T
b
Уп
Z
1
Yn + FB
Chapter 2 Solutions
Foundation Design: Principles and Practices (3rd Edition)
Ch. 2 - Classify the uncertainty associated with the...Ch. 2 - Figure 2.1 shows the PDF for a normal distribution...Ch. 2 - List three sources of epistemic uncertainty...Ch. 2 - Using a random number generator create a sample of...Ch. 2 - A certain column will carry a dead load estimated...Ch. 2 - A simply supported beam has a length of 3 m and...Ch. 2 - Using the data shown in Figure 2.5 determine the...Ch. 2 - The capacity for a certain foundation system is...Ch. 2 - We wish to design a shallow foundation with a...Ch. 2 - Prob. 2.10QPP
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