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  1. Bridge_engr

    Box Girder Torsion capacity as per AASHTO LRFD

    Hi everyone, Reference AASHTO clause 5.8.3.6.3 (longitudinal reinforcement) for torsion: AASHTO 2014 suggest to include portion of longitudinal PT as part of this longitudinal reinforcement requirement. Just want to know if anyone has ever used long PT in the calculations and how? see attached...
  2. Bridge_engr

    Friction Test to confirm friction values between tendon and duct

    Can anyone advise any references about procedure of conducting a friction test to confirm friction coefficient value i.e. friction between tendon and duct? This is required to confirm the actual tendon elongation values. Thanks
  3. Bridge_engr

    Prestress Precast I-girder - horizontal sweep

    Hi all, What are the potential causes if a precast prestressed (post tensioned) I-girder slender beam deforms in the lateral direction after release of the prestress force: I know some of the reasons are: eccentric tendons in the lateral direction; imperfections in the casting of girder...

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