304.8 Problem 3 A Post-tensioned prestressed concrete beam is to carry a live load of 15.7 kN/m and a superimposed dead

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304 8 Problem 3 A Post Tensioned Prestressed Concrete Beam Is To Carry A Live Load Of 15 7 Kn M And A Superimposed Dead 1 (23.8 KiB) Viewed 70 times

304.8 Problem 3 A Post-tensioned prestressed concrete beam is to carry a live load of 15.7 kN/m and a superimposed dead load of 9.3 kN/m. In addition to its own weight (Assumed to be 3.75 kN/m) on a 16.50 m simple span. Normal density concrete will be used with design strength fc = 41 MPa and Pi = 1300 KN. Time-dependent losses may be assumed at 15 percent of the initial prestress with Ap = 950 mm. Determine the stress (MPa) at the extreme bottom fiber located at midspan under the final stage. 152.4 210.5 210.5 230.4 1 152.4 152.4