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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 n bending (modulus of rupture) is 475 psi. The yield point of the steel f, is 60,000 psi. Determine the stress in the steel caused by a bending moment M- 10 ft-kips. 9-6.78 in, I-4067 in, Es- 29000000, E- 3600000 LI7 in. 20 in. 3 89 bars A,-3.00 in.) 3 in. 12 in.- Select one: a. 2525 psi b. 2412 psi C. 2615 psi d. 2817 nsi

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 n bending (modulus of rupture) is 475 psi. The yield point of the steel f, is 60,000 psi. Determine the stress in the steel caused by a bending moment M- 10 ft-kips. 9-6.78 in, I-4067 in, Es- 29000000, E- 3600000 LI7 in. 20 in. 3 89 bars A,-3.00 in.) 3 in. 12 in.- Select one: a. 2525 psi b. 2412 psi C. 2615 psi d. 2817 nsi

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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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 stress in the steel caused by a bending moment M = 10 ft-kips. 9 - 6.78 in, I- 4067 in, Es = 29000000, E - 3600000 L17 in. 20 in. 3 #9 bars (A, - 3.00 in.) 3 in. -12 in.- Select one: a. 2525 psi b. 2412 psi C. 2615 psi d. 2817 psi
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 stress in the steel caused by a bending moment M = 10 ft-kips. 9 - 6.78 in, I- 4067 in, Es = 29000000, E - 3600000 L17 in. 20 in. 3 #9 bars (A, - 3.00 in.) 3 in. -12 in.- Select one: a. 2525 psi b. 2412 psi C. 2615 psi d. 2817 psi
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