A bridge is designed using a prestressed beam as shown. A beam with width b = 250 mm and %3D depth d = 450 mm is pre stressed by an initial force of 600 kN. Total loss of pre stress at service loads is 15%. Calculate the resulting final compressive stress at the top midspan of the beam %3D section if the pre stressing force is applied at the centroid of the beam section. The beam is carrying a total load of 15KN/m in a span of 8m. Ctop = 225 mm 450 e = 0 Cbot = 225 mm
A bridge is designed using a prestressed beam as shown. A beam with width b = 250 mm and %3D depth d = 450 mm is pre stressed by an initial force of 600 kN. Total loss of pre stress at service loads is 15%. Calculate the resulting final compressive stress at the top midspan of the beam %3D section if the pre stressing force is applied at the centroid of the beam section. The beam is carrying a total load of 15KN/m in a span of 8m. Ctop = 225 mm 450 e = 0 Cbot = 225 mm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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