VIEWS: 14 PAGES: 2 CATEGORY: Engineering & Energy POSTED ON: 7/14/2010
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.
Bridge Beam Series Introduced 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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