Reinforced Concrete Beam - athena.ecs.csus.edu
Concrete Beam 35 ©jkm Shear Failure The beam may fail due to excessive shear stresses (i.e., diagonal tension), if the shear capacity of the beam is less than its flexural capacity The average shear stress at which a diagonal tension crack forms depends on the presence of flexural stresses There is a lot of scatter in the data that
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athena.ecs.csus.eduThe concrete on the top crushes before the steel yields (brittle) The steel yields before concrete crushes (ductile) The concrete will fail in compression at a concrete strain of ~0.003-0.004. The steel will yield at a steel strain of fy/Es or a steel stress of fy. N A ccr h b d nAS Concrete Beam 26 ©jkm Cracking of the Concrete in Tension
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