Verification/Development of Seismic Design Specifications for Downstate Zone

The New York City Department of Transportation (NYCDOT) Seismic Design Guidelines Report was updated in September 2008 by Weidlinger Associates to reflect current state-of-the-art knowledge. The NYCDOT seismic design guidelines are for use in the Downstate Zone which consists of New York City, Rockland County, Westchester County and Nassau County. New York State Department of Transportation (NYSDOT) has adopted the American Association of State Highway Officials (AASHTO) Load and Resistance Factor Design (LRFD) Seismic Design Specifications for the Upstate Zone. The NYCDOT Seismic Design Guidelines Report (September 2008) proposed for use in the Downstate Zone has some key differences with the current AASHTO LRFD Bridge Design Specifications. The main objectives of this project has been to (1) carry out an independent assessment of the proposed NYCDOT Seismic Design Guidelines Report (September 2008) by evaluating the methodology and assumptions used in the development of the report and by critically commenting on the results of the report, (2) determine If the methodology and assumptions used are acceptable, (3) determine the effects of the NYCDOT Seismic Design Guidelines Report by developing examples of critical and essential bridges for soil types A to E showing comparisons of NYCDOT and AASHTO LRFD spectra curves (4) estimate the design and construction cost differences using NYCDOT and AASHTO LRFD Guide Specifications for the seismic design of bridges and (5) develop New York State Blue Pages to be used with both the AASHTO LRFD Bridge Design Specifications and the AASHTO Guide Specifications for LRFD Seismic Bridge Design. Numerous changes in the NYCDOT seismic design guidelines have been proposed and incorporated. Recommendations for future improvement of the guideline have also been provided.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; References; Tables;
  • Pagination: 104p

Subject/Index Terms

Filing Info

  • Accession Number: 01535802
  • Record Type: Publication
  • Report/Paper Numbers: C-09-04
  • Created Date: Aug 15 2014 2:13PM