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Problem 7.3-9 A shear wall in a reinforced concrete building is
subjected to a vertical uniform load of intensity q and a horizontal force
H, as shown in the first part of the figure. (The force H represents the
effects of wind and earthquake loads.) As a consequence of these loads,
the stresses
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Problem 7.2-10 Solve the preceding problem if the normal
and shear stresses acting on the element are x 2100 kPa,
y 300 kPa, and xy560 kPa, and the seam is oriented
at an angle of 22.5° to the element (see figure).
Solution 7.2-10 Plane stress (angle )
430 CHAPTER 7 Analysis of Stress
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CHAPTER 7 Analysis of Stress and Strain
y
O x
3000 psi
x 0 y 0 xy 3000 psi
(a) ELEMENT AT 70
(All stresses in psi)
2 140 70 R 3000 psi
Origin O is at center of circle.
Point D:
Point D:
tx1y1R sin 50 2298 psi
sx1R cos 501928 psi
tx1y1R sin 502298
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L carries a vertical concentrated load P acting through the centroid C at
the midpoint of the span (see figure). The beam is attached to supports
inclined at an angle to the horizontal.
Determine the orientation of the neutral axis and calculate the
maximum stresses at the outside corners of t
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the deflection curve is nearly flat.
Then the distance BC is the same as the length L
of the beam.
arcsin 0.02 0.02 rad
(1 cos ) (75 m)(1 cos (0.02 rad))
15.0 mm
NOTE: which confirms that the deflection
curve is nearly flat.
L
100,
∴ sin u
L
r
1.5 m
75 m
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