b = 5 in The simply supported beam shown below carries its own weight, a uniformly distributed live loadof 300 lbs/ft, and a concentrated dead load PD at midspan. The cross-section of the beam is U-shaped. It has two rows of reinforcing bars at the bottom. The bottom row has five #6 bars and thetop row has three #6 bars. Let f' =4,000 psi andis 0.44 in.².WL = 300 lbs/ft10 ft.PD★ 10 ft.f,ƒ, = 60 ksi. The cross-sectional area of a #6 bar17 in.3 in.8 #6 barsооо10+b6 in.Otºtb14 in.9 in.Consider the beam with the value of b determined in part (b). If the number of bars in thetop row is increased to five to have a total of ten #6 bars in the two rows, what is theminimum amount of compression steel, A, required for the beam to be tension controlled?The centroid of the compression steel is to be at 2.5 in. from the top face of the beam. Showwith calculations that the beam is indeed tension controlled. (Ans: A's = 0.88 in.²)

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The simply supported beam shown below carries its own weight, a uniformly distributed live load of 300 lbs/ft, and a concentrated dead load PD at midspan. The cross-section of the beam is U- shaped. It has two rows of reinforcing bars at the bottom. The bottom row has five #6 bars and the top row has three #6 bars. Let f =4,000 psi and f, = 60 ksi. The cross-sectional area of a #6 bar is 0.44 in.².

The simply supported beam shown below carries its own weight, a uniformly distributed live load of 300 lbs/ft, and a concentrated dead load PD at midspan. The cross-section of the beam is U- shaped. It has two rows of reinforcing bars at the bottom. The bottom row has five #6 bars and the top row has three #6 bars. Let f =4,000 psi and f, = 60 ksi. The cross-sectional area of a #6 bar is 0.44 in.².

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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