Select the correct statement from the following:An "under-reinforced" beam condition results in a brittle failure mode.An "over-reinforced" concrete beam is acceptable because it's stronger thanrequired and is conservative.An "over-reinforced" beam corresponds to a condition where the beammaximum bending strength is controlled by steel yielding.The ACI code provisions include a maximum limit on the amount of beamreinforcing steel to ensure that an "under-reinforced" condition exists.

Answered: Select the correct statement from the…

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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Select the correct statement from the following:
An "under-reinforced" beam condition results in a brittle failure mode.
An "over-reinforced" concrete beam is acceptable because it's stronger than
required and is conservative.
An "over-reinforced" beam corresponds to a condition where the beam
maximum bending strength is controlled by steel yielding.
The ACI code provisions include a maximum limit on the amount of beam
reinforcing steel to ensure that an "under-reinforced" condition exists.

Expert Solution

Step 1

Brief concept introduction-

(1) Under-reinforced beam-

This beam has lower % of steel than the balanced section. The failure happens due to the yielding of the steel reinforcement.

(2) Over-reinforced beam-

This beam has higherr % of steel than the balanced section. The failure happens due to the concrete failure.

(3) Balanced beam-

This beam has same amount of steel reinforcement and concrete. The failure happens due to the simultaneous failure of the steel reinforcement and the concrete.

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