Problem 1 Since concrete can support little or no tension, this problem can be avoided by using wires or rods to prestre

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Problem 1 Since Concrete Can Support Little Or No Tension This Problem Can Be Avoided By Using Wires Or Rods To Prestre 1 (25.18 KiB) Viewed 57 times

Problem 1 Since concrete can support little or no tension, this problem can be avoided by using wires or rods to prestress the concrete once it is formed. Consider the simply supported beam shown, which has a rectangular cross-section of 25 in. by 12 in. If the concrete has a specific weight of 190 lb/ft", determine the required tension (in kips) in rod AB, which runs through the beam so that no tensile stress is developed in the concrete at its center section a-a. Neglect the size of the rod and any deflection of the beam. PB-2 in T 23 in 25 in . H 6 in. 6 in. 4.5 ft + 4.5 ft