%0 Journal Article %T Considerations for the design of doubly unsymmetrical precast pretensioned beams used for box girder construction %A Ayoub, Essam %A Malek, Charles %A Helmy, Gamal %J Structural Concrete %V 13 %N 3 %P 193-199 %@ 1464-4177 %D 2012-09-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve