Residential Construction Academy: House Wiring (MindTap Course List)
4th Edition
ISBN: 9781285852225
Author: Gregory W Fletcher
Publisher: Cengage Learning
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Chapter 3, Problem 4RQ
Name the three styles of screwdrivers used most often in residential electrical work. (Objective 3-1)
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For the gravity dam shown in the figure, The following data are available:
-Unit weight of concrete (Yconc) = 2.4 ton/m³
-Vertical upward earth quake factor (K,) = 0.1
-Neglect Wave pressure, silt pressure and ice force
μ=0.65
a-Find heel and toe stresses (Pmin & Pmax)
b-Is this structure safe against tension?
c-Find the factor of safety against sliding and overturning (F.S, & F.Sover)
165 m
160 m
t
10 m
T
I
4 m
50
100 m
For the gravity dam shown in the figure, The following
data are available:
-Unit weight of concrete (Yeone) 2.4 ton/m³
Vertical down ward earth quake factor (K,) = 0.1
Neglect Wave pressure, silt pressure and ice force
The wind velocity (V)-45 Km/hr
Straight length of water expanse (F) 75 Km
=0.7
14-70m
3h T
a- Find the factor of safety against sliding and overturning (F.Slid F.Sover)
b- Find the toe and heel stresses (hma, and hmin.)
c-Check tension.
8m
QUESTION 2-(40 Points)
In the case where other information is given in the figure, the wall is under the
effect of a uniform lateral wind load of 0.7 kN/m2. Since the foundation is sized
according to the safe bearing capacity of the soil and the safe bearing capacity
remains the same, find the width of this foundation asymmetrically (with
uniform base pressure). Draw the vertical section of the wall of the asymmetric
foundation and write its dimensions and values on it. Draw the T and M
diagrams along the width. The foundation thickness is the same in both cases.
q=0.7 kN/m2
5 m
R
Duvar
Nd=Wd
0.7 m
T
K
0
0.6
0.5
1.7 m
Yb-24 kN/m3
0.6 m
T
+
foundation
Chapter 3 Solutions
Residential Construction Academy: House Wiring (MindTap Course List)
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