The Kansas Department of Transportation, which currently uses a series of standard prestressed concrete beam sections referred to as K-girders for prestressed beam bridge projects, is considering a switch to use of NU I-girder sections. The NU I-Girder sections are attractive for their efficiency, but Kansas engineers are not accustomed to their use. The aim of this analytical study was to develop an Excel-based tool that can be used to produce charts that engineers can use for preliminary selection of NU I-girder section sizes and strand numbers. The calculations described herein are in compliance with KDOT Bridge Design Specifications.
Carlton, K. and Lequesne, R. "Charts for Preliminary Selection of NU Girder Sections Based on Kansas Department of Transportation LRFD Design Guidelines for Prestressed Concrete Beams," SL Report 16-2, The University of Kansas Center for Research, Inc., Lawrence, KS, May 2016, 38 pp.
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