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Bridge Beam Series Introduced by ProQuest


FIBs provide numerous advantages over standard AASHTO Beams or Florida Bulb-T Beams, including: * Accommodation for more strands; * Reductions in depth and the number of beams required for a given span; and * Greater stability during transport and construction.

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									        Bridge Beam Series
T   he Florida Department of Transportation (FDOT)
    recently introduced a new bridge beam series, the
Florida-I Beam (FIB) (Fig. 1). The FIB series was developed
                                                                      ■ Greater stability during transport and construction.
                                                                         The FIB design standards also offer a fully predesigned
                                                                      welded wire reinforcing option to minimize beam
through the combined efforts of the FDOT Structures                   fabrication time. FIBs have a strand template capacity
Design Office, the Florida Prestressed Concrete Association,          of seventy-two 0.6 in. (15 mm) diameter strands. While
and Maher Tadros of the University of Nebraska. Fabrication           current practical concrete strengths of 8.5 ksi (60 MPa)
of the first FIB was completed by Standard Concrete                   limit beam spans to about 177 ft (54 m) (Fig. 3), FDOT
Products of Tampa, FL, on December 7, 2009 (Fig. 2). The              will be able to take full advantage of the potential FIB
78 in. (1980 mm) deep, 159 ft (48.5 m) long beam will be              strand capacity when 10 ksi (70 MPa) concrete is widely
used on the SR-826 Palmetto Expressway in Miami-Dade                  available. Then, 78 in. deep FIBs will be able to span
County, FL.                 
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