1 / 12

Effect of 2013 Interim Revisions to the MBE on Legal, SHV and Permit Vehicles

Virtis Opis User Group Meeting, August 6, 2013. Effect of 2013 Interim Revisions to the MBE on Legal, SHV and Permit Vehicles. August 6, 2013 Bryan J. Silvis, P.E. Structure and Bridge Division Engineering Services Section. VDOT Load Rating Background.

penny
Download Presentation

Effect of 2013 Interim Revisions to the MBE on Legal, SHV and Permit Vehicles

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Virtis Opis User Group Meeting, August 6, 2013 Effect of 2013 Interim Revisions to the MBE on Legal, SHV and Permit Vehicles August 6, 2013 Bryan J. Silvis, P.E. Structure and Bridge Division Engineering Services Section

  2. VDOT Load Rating Background • Original purpose was to run a test suite to track changes in release versions. • When investigating changes in ratings for legal routine, legal SHV and permit (unlimited crossing) vehicles, became aware of more general effect of the changes to the MBE. • All tables shown are taken from the AASHTO 2013 Interim Revisions to the Manual for Bridge Evaluation, Second Edition.

  3. Sample Set • 8 Bridge Types (3 structures selected for each type): • Type 1 - Simple span concrete slabs • Type 2 - Continuous concrete slabs • Type 3 - Simple span concrete T-beams • Type 4 - Simple span rolled beams • Type 5 - Continuous rolled beams • Type 6 - Simple span plate girders • Type 7 - Continuous plate girders • Type 8 - Simple span prestressed AASHTO I-beams

  4. Legal - Routine

  5. Legal - Routine

  6. Legal - SHV

  7. Legal - SHV

  8. Permit – Unlimited Crossings • BP-115:

  9. Previous MBE - Permit

  10. 2013 Interim - Permit

  11. Summary • 2013 Changes (very general): • Legal (Routine): Modest increase in rating for lower ADTT’s to substantial increase for higher ADTT’s • Legal (SHV): Slight decrease in rating for lower ADTT’s to modest increase for higher ADTT’s • Permit (Unlimited Crossing): General increase in ratings. Rating increase percentage increases with ADTT. Percentage increase where entire vehicle fits on structure is larger than where only a portion of the vehicle can.

  12. Questions?? • Contact: • bryan.silvis@vdot.virginia.gov • 804-371-2737

More Related