Validation of Specification Modification by NCHRP 12-50 Process

A replacement to Article 6.10 of the AASHTO "LRFD Design Bridge Design Specifications" was proposed to the Subcommittee on Bridges and Structures (SCOBS) (June 2003). With data obtained from AASHTO's Virtis Load Rating System, approximately 200 steel bridges were analyzed and reviewed by using the proposed load and resistance factor design (LRFD), the current LRFD, and the current load factor design methods. The engineering process, a comparison of the results obtained by the different methods, and the observed trends are outlined. The goal was to determine the effects that the proposed AASHTO LRFD Article 6.10 modifications had on bridges before the adoption of the specification revisions by the AASHTO SCOBS. Oral presentations at the AASHTO Annual Meeting helped bridge engineers to understand the effects of the new version of Article 6.10 on practice. This process, which uses NCHRP 12-50, is outlined, and the results are systematically reported. This is the first truly systematic validation of a significant specification modification before its adoption. The experience is noteworthy and should be documented. This process could become a trend in specification development.

• Record URL:
  • https://doi.org/10.3141/trr.11s.x777158810605575
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=Validation+of+Specification+Modification+by+NCHRP+12-50+Process&author=B.+Goodrich&author=J.+Puckett&author=M.+Jablin&publication_year=2005
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309093813
• Authors:
  • Goodrich, Brian L
  • 0000-0003-4744-0102
  • Puckett, Jay A
  • Jablin, Mark C
  • 0000-0002-9639-8652
• Conference:
  • 6th International Bridge Engineering Conference: Reliability, Security, and Sustainability in Bridge Engineering
  • Location: Boston MA, United States
  • Date: 2005-7-17 to 2005-7-20
• Publication Date: 2005

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 217-223
• Monograph Title: 6th International Bridge Engineering Conference, July 17-20, 2005
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: CD 11-S
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Bridge design; Load and resistance factor design; Specifications; Steel bridges; Validation
• Uncontrolled Terms: Modifications
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01002479
• Record Type: Publication
• ISBN: 0309093813
• Files: TRIS, TRB
• Created Date: Jul 28 2005 5:30PM