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2 cards from this section. Quick, good the night before a test.
What is equilibrium in the context of reinforced concrete?
Think about how forces interact in a beam.
What is the typical failure strain for normal strength concrete?
Consider the proportionality in stress-strain.
What is the primary purpose of analyzing equilibrium in reinforced concrete design?
Think about the safety aspects of construction.
True or False: The failure strain of concrete varies with its compressive strength.
Consider if stronger concrete fails at a different point.
A 10-foot-long reinforced concrete beam has a cross-section that is 10 inches wide and 12 inches tall. If the steel reinforcement’s tension equals 30 kips at mid-span, what is the equivalent compression in the concrete at the same section?
Apply equilibrium principles to balance the concrete and steel.
Given that the failure strain for a concrete beam is 0.003, if the strain observed during loading is 0.0025, will the beam fail?
Compare the observed strain with the failure strain.
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