Utah

Beam shapes and LRFD configuration for Utah DOT

PGSuper Professional Only

This PGSuper configuration is included with PGSuper Professional and implements beam shapes and LRFD settings as per the UDOT Structures Design and Detailing Manual, October 2022).

Implemented Girder Shapes

  • Utah Bulb Tee Girders with Harped Strands (all shapes)
  • Utah Deck Bulb Tee Girders with Harped Strands (all shapes)
Utah BT Beams

Bulb T Beams
Utah UDBT Beams

Deck Bulb T Beams

Assumptions and Limitations

  • UDOT Structures Design and Detailing Manual, October 2022
  • Project criteria is set to the latest AASHTO LRFD Bridge Design Specifications, at time of publication 9th Edition
  • UDOT 14.6.1.1: “Use gross section properties in conjunction with the Service III load combination. Use transformed section properties with the Service I load combination.” Gross section properties are used for all limit states in PGSuper.
  • UDOT 14.6.3.4 states: “When analyzing stresses and/or determining the required length of debonding, limit stresses to the values in LRFD Article 5.9.2, except limit tension to 0.0948 sqrt(f’c) for all exposure conditions.” PGSuper does not differentiate debonding from other end stress evaluations, and uses AASHTO stress limits in these locations.
  • UDOT 14.6.3.2 says to use resistance factor of 0.9 for negative moment in CIP continuity diaphragms. PGSuper follows LRFD guidelines for reinforced concrete in this area.
  • Fatigue tensile stress is not checked from UDOT 14.2.4. Users must check manually.
  • Railing, sidewalk, and pedestrian load are distributed evenly to nearest 3 girders
  • Per UDOT 12.2.2.1.2: Skew correction factors for moment in LRFD Table 4.6.2.2.2e-1 are not used to reduce the calculated live load moments in skewed bridges.
  • Elastic gain due to deck shrinkage set at 100%. This differs from WSDOT and TxDOT who have found this to be excessive.
  • 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. 
  • Checking and automated design for lifting and hauling is disabled.
  • Strand slope 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 Utah library

References

  • UDOT Structures Design and Detailing Manual, October 2022
  • AASHTO LRFD Bridge Design Specifications,1998-present
  • PCI Bridge Manual, Appendix B, AASHTO/PCI Bridge Products

Revision History

  • September 28, 2023 - Initial Release

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.