-kips.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A rectangular beam has the dimensions (see Figure) b = 12 in., h - 20 in, and d 17 in. and is reinforced with three
No. 9 (No. 29) bars so that As - 3.00 in. The concrete compressive strength fe is 4000 psi, and the tensile strength
In bending (modulus of rupture) is 475 psi. The yield point of the steel f, is 60,000 psi. Determine the concrete
compression stress at the top fiber caused by a bending moment M- 10 ft-kips. 9- 6.78 in, I= 4067 in, Es=
29000000, E = 3600000
17 in.
20 in.
3 #9 bars
(A, - 3.00 in.?)
3 in.
-12 in-
Select one:
a. 390 psi
b. 1390 psi
c. 200 psi
d. 250 psi
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