Design Step 5 – Design of Superstructure Prestressed Concrete Bridge Design Example Task Order DTFH61-02-T-63032 5-46 Design Step 5.6 FLEXURE DESIGN Design Step 5.6.1 Flexural stress at transfer Design Step 5.6.1.1 Stress limits at transfer Compression stress: The allowable compression stress limit for pretensioned concrete components is calculated according to S5.9.4.1.1. f Compression = -0.60(f′ ci ) = -0.60(4.8 ksi) = -2.88 ksi Tension stress: From Table S5.9.4.1.2-1, the stress limit in areas with bonded reinforcement sufficient to resist 120% of the tension force in the cracked concrete computed on the basis of an uncracked section is calculated as: f Tension = ci f 0.22 ′ = 8 . 4 22 . 0 = 0.48 ksi
Design of Superstructure
Jun 18, 2023
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