The lintel of prestressed reinforced concrete in the figure below is 1.50 m long. The concrete encloses one steel reinforcing rod with…

The lintel of prestressed reinforced concrete in the figure below is 1.50 m long. The concrete encloses one steel reinforcing rod with cross-sectional area 1.00 cm2. The rod joins two strong end plates. The cross-sectional area of the concrete perpendicular to the rod is 47.5 cm2. Young’s modulus for the concrete is 3.00 1010 N/m2. After the concrete cures and the original tension T1 in the rod is released, the concrete is to be under compressive stress 8.65 106 N/m2.

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