Question: A single - span concrete beam has a 1 2 square cross - section and supports a concentrated load at its mid - span.

A single-span concrete beam has a 12" square cross-section and supports a concentrated load at its mid-span.
Concrete tension strength, f't=400. Determine the magnitude of the concentrated force that would cause
flexural cracking in the beam.
b=12''
Consider a rectangular reinforced concrete beam. Draw a diagram showing the beam internal stresses after concrete cracking
occurs under bending moment. Identify the concrete zone under compression stress and reinforcing bars tension.
A single - span concrete beam has a 1 2 " square

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