AASHTO-LRFD SEGMENTAL POST-TENSIONED BOX BRIDGE SIZING

This set of slides investigates the calculation of the following parameters:

  • Minimum flange thickness
  • Minimum web thickness
  • Length of top flange cantilever
  • Girder depth
  • Number of cells

Bridge Design Flowchart

Start Material Selection Design Basis Construction Stages Preliminary Girder Design Based on Span Length & Width Dead Load Live Load Service Limit Checks Preliminary Tendon Design Prestress Losses Concrete Stress Checks at Construction Concrete Stress Checks at Service Canber and Deflection Strength Flexure Strength Shear Interface Shear Design Deck Design Bridge Modeling