Скачать или смотреть What Are Crank Bars? Why Crank Bars Are Provided In Slabs, Beams?

When the dead load of the slab and uniform live load over it act in the downward direction, the forces in the end support or continuous support act in the upward direction to counterbalance the slab load.
This action creates two types of bending moments in the structure. They are sagging bending moment & hogging bending moment
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