Technical Reports

Investigation of Design Standards for Urban Rail Transit Elevated Structures

  • 01
  • Jun
  • 1981
AUTHOR: B. W. Harrington, Jr.
SUBJECT: Tracks & Structures, Evaluation
KEYWORDS: Design Criteria, Literature Review, Comparison
ABSTRACT: The purpose of this report was to review the various criteria for design of elevated rail transit structures currently in use by selected transit properties and to compile them in one source. The criteria was to be reviewed to determine the differences and similarities between them. An evaluation was to be made as to the feasibility of a uniform industry wide criteria for design of elevated transit structures similar to the AASHTO Standard Specifications for Highway Bridges. This was accomplished through a library search, review of selected design criteria and designs completed using these criteria and personal interviews. A great deal of information was gathered and reviewed in this process. Generally it was concluded that many similarities exist between criteria currently in use. The differences noted were minor and generally were related to unique operational considerations, state of the art at time of criteria development, and type of transit cars in use on the system. Because of the number of similarities between the reviewed criteria, it was concluded that a uniform industry wide criteria for design of elevated transit structures could be developed. However, it should be flexible enough for accommodating unique conditions that would occur throughout the country.