The beam section below has 4 #7 bars arranged in one row as shown below. The beam has normal-weight concrete with a compressive strength, f, equal to 4,000 psi, and the yield strength of thereinforcing steel is 60 ksi (Grade 60).14 in.3 in.3 in.164#7 bars21 in.4 in.15 in.5 in.(a) Determine M₁, the nominal moment capacity of the beam.n(b) Consider that the section has four #9 tension bars instead of four #7. In addition, it has four#4 bars in the top flange. The centroid of the top bars is 2.5 in. from the top edge of thebeam. Determine M₁, the nominal moment capacity of the beam, taking into account ofthe compression steel.

f'c=4000 psify=60,000 psiCase-ITo determine nominal moment capacity of beamCase-IITo determine…

The beam section below has 4 #7 bars arranged in one row as shown below. The beam has normal- weight concrete with a compressive strength, f, equal to 4,000 psi, and the yield strength of the reinforcing steel is 60 ksi (Grade 60).

The beam section below has 4 #7 bars arranged in one row as shown below. The beam has normal- weight concrete with a compressive strength, f, equal to 4,000 psi, and the yield strength of the reinforcing steel is 60 ksi (Grade 60).

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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Question

The beam section below has 4 #7 bars arranged in one row as shown below. The beam has normal-
weight concrete with a compressive strength, f, equal to 4,000 psi, and the yield strength of the
reinforcing steel is 60 ksi (Grade 60).
14 in.
3 in.
3 in.
164
#7 bars
21 in.
4 in.
15 in.
5 in.
(a) Determine M₁, the nominal moment capacity of the beam.
n
(b) Consider that the section has four #9 tension bars instead of four #7. In addition, it has four
#4 bars in the top flange. The centroid of the top bars is 2.5 in. from the top edge of the
beam. Determine M₁, the nominal moment capacity of the beam, taking into account of
the compression steel.

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