Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Question
Chapter 2, Problem 13P
(a)
To determine
Calculate the doubling time.
(b)
To determine
Calculate the current annual growth rate.
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Q2. Find the support reactions at A and F for the given structure in Fig.(2).
80kN-m
2 kN
1 m
2 m
Im
1 m
2 m
Fig. (2)
A continuous foundation is shown in Figure 1. If the load eccentricity, e = 0.5 meter.
Determine the ultimate load Qult per unit length of the foundation. Use Mayerhof’s effective
area method. Given B = 2 meter, Df = 2.0 meter , ϕ = 40 , c’ = 0 kN/m3, γ = 16.5 kN/m3
.
Calculate also the Factor of Safety for the shallow foundation.
A simply supported beam is subjected to the end couples (bending is about the strong axis) and the axial load shown in the figure
below. These moments and axial load are from service loads and consist of equal parts dead load and live load. Lateral support is
provided only at the ends. Neglect the weight of the beam and investigate this member as a beam-column. Use Fy
that P40 k and M = 68 ft-k.
For W10 × 33: I = 171 in.4;
10 ft and C₁ = 1.0: Mn = 134 ft-kips and Mn/₁ = 89.3 ft-kips;
=
50 ksi. Suppose
for Lb
for Lc
-
= 10 ft: Pn 330 kips and Pr/c
=
220 kips.
W10 X 33
P
M
M
10'
Pu
A)
+
Ферп 9
a. Use LRFD.
Select the interaction formula:
Mur
84, Mnz
Muy
+
<1.0
Фь Мпу
Pu
Mur
Muy
B)
+
+
≤ 1.0
20c Pn
Фь Мих
nx
ФоМпу
-Select- ✓
Compute the interaction formula.
(Express your answer to three significant figures.)
-Select- 1.0
This member is -Select-
b. Use ASD.
Select the interaction formula:
Ра
8
Max
May
A)
+
+
<1.0
Pn/c
Mnx/b Mny/b
Pa
Max
May
B)
+
+
1.0
2Pn/c Mnx/b Mny/b
-Select-
Compute the…
Chapter 2 Solutions
Sustainable Energy
Ch. 2 - A quantity has a doubling time of 110 years....Ch. 2 - The population of a particular country has a...Ch. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - The total world population in 2012 was about 7...Ch. 2 - The population of a state is 25,600 in the year...Ch. 2 - The population of a country as a function of time...Ch. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11P
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