CalTrans

Beam shapes and LRFD configuration for CalTrans

PGSuper Professional Only

This PGSuper configuration is included with PGSuper Professional and implements beam shapes and LRFD settings as per the California Amendments (to the AASHTO LRFD Bridge Design Specifications - Sixth Edition).

Implemented Girder Shapes

  • Bath Tub Girders (all shapes)
  • Bulb Tee Girders with Debonded Strands (all shapes)
  • I-Girders (all shapes)
  • Slab Girders
  • Wide Flange Girders (all shapes)
CalTrans Wide Flange Beams

Wide Flange Beams
CalTrans BT Beams

CalTrans BT Beams
CalTrans Tub Girders

CalTrans Tub Girders
CalTrans Slab Beams

CalTrans Slab Beams
CalTrans Box Beams

CalTrans Box Beams

Assumptions and Limitations

  • California Amendments (to the AASHTO LRFD Bridge Design Specifications - 8th Edition), last updated August 19, 2019
  • As per above, project criteria is set to the AASHTO LRFD Bridge Design Specifications, 8th Edition, 2017
  • Railing, sidewalk, and pedestrian load are distributed evenly to all girders
  • P15 Truck applied in the Strength II limit state
  • Amendment Table 5.9.4.2.2-1 (Tensile Stress Limits). The additional spec check requirement in the table for “No tension” for “Precompresssed Tensile Zone Bridges, Assuming Uncracked Sections—components with bonded prestressing tendons or reinforcement, subjected to permanent loads only.” Is implemented in PGSuper.
  • Limits for partially debonded strands set per CalTrans amendment 5.9.4.3.3
  • Losses computed using the LRFD Refined Estimate (5.9.3.4)
  • Rating criteria has not yet been input. Users needing to perform rating analysis must input parameters manually in order to perform rating analyses. Feedback on recommended rating parameters is appreciated. 
  • Amendment 4.6.2.2.2e Skewed Bridges not implemented. The LRFD reduction for live load distribution factors is still applied and must be adjusted manually.
  • 5.7.3.4.2 General Procedure for Shear Design with Tables as defined in Appx B5 is used
  • Checking and automated design for lifting and hauling is disabled.
  • Strand slope check is disabled
  • Harped strand hold down check is disabled

PGSuper Set Up Instructions

This configuration is included in PGSuper Professional and its use is restricted to licensed users only. PGSuper Professional users can access the configuration as follows:

  • Open PGSuper Professional
  • Click File | Configure PGSuper
  • Select the PGSuper Professional sever
  • Select the CalTrans library

References

Revision History

  • April 25, 2011 - Initial Release
  • February 23, 2016 - Implemented CalTrans design specifications and added more sections.
  • January 13, 2020 - Updated to 8th Edition amendments
  • March 20, 2021 - Added Box Beam shapes. Future overlay. Fixed strand layout for WF beams. Added MHE vehicle.

Developer

  • BridgeSight Staff

Disclaimer

IN NO EVENT WILL WE BE LIABLE TO YOU FOR ANY DAMAGES, INCLUDING ANY LOST PROFITS, LOST SAVINGS, OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR THE INABILITY TO USE THE SOFTWARE (EVEN IF WE OR AN AUTHORIZED DEALER OR DISTRIBUTOR HAS BEEN ADVISED OF THE POSSIBILITY OF THESE DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.

SOME STATES DO NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.