United States Department of Transportation
i
Improved Inspection Techniques for Steel Prestressing/Post Tensioning Strand : [Summary]
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2012-01-01
[PDF-541.35 KB]
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Alternative Title:Improved Inspection Techniques for Steel Prestressing/Post-tensioning Strand : [Summary]
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Edition:Summary.
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Abstract:Post-tensioned concrete has been widely used for
over 50 years. The first Sunshine Skyway Bridge,
built in 1954, was one of the earliest structures in
the U.S. to incorporate post-tensioned elements;
its replacement also uses the technology. Post-
tensioning has many advantages; for example, it
allows longer, lighter spans. But this technique
also has vulnerabilities,
especially corrosion of cables
or anchors, exacerbated by
Florida’s hot, humid, often
salty environment. Though
failed tensioning components
have never led to significant
public safety concerns,
the Florida Department
of Transportation (FDOT),
through its research program,
continually seeks better
methods of installation,
inspection, and maintenance
of post-tensioned structures.
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