AASHTO LRFD SEGMENTAL POST-TENSIONED BOX BRIDGE MAIN CONSTRUCTION LOADS

  • DC = Weight of the supported structure
  • DIFF = Differential load:
  • DW = Superimposed dead load
  • CLL = Distributed construction live load;
  • CE = Specialized construction equipment, load from launching gantry, formtraveller, beam and winch, etc.,
  • IE = Dynamic load from equipment
  • CLE = Longitudinal construction equipment loads
  • U = Segment unbalanced load,
  • WS = Horizontal wind load on structure
  • WE = Horizontal wind load on equipment
  • WUP = Wind uplift on cantilever
  • A = Static weight of precast segment being handled
  • AI = Dynamic response due to accidental release of precast segment
  • CR = Creep effects in accordance with Article 5.14.2.3.6 or by field tests
  • SH = Shrinkage in accordance with Article 5.14.2.3.6
  • T = Thermal loads; the sum of the effects due to uniform temperature variation (TU) and temperature gradients (TG)
  • WA = Water load and stream pressure LRFD

Bridge Design Flowchart