Parking Lot Corrosion Cure

by Scott Greenhaus, (M.ASCE), Senior Vice President; Structural Preservation Systems, Inc., Baltimore, MD,


Serial Information: Civil Engineering—ASCE, 1996, Vol. 66, Issue 11, Pg. 58-60


Document Type: Feature article

Abstract:

The $3 million structural repair and restoration of a large post-tensioned parking structure required engineers to replace 2,400 tendons while keeping the parking garage in service. After the owner of a 220,000 sq ft parking lot structure in Miami, Florida, noticed corrosion damage at the ends of post-tensioned beams, he called in an engineer to perform a structural inspection. The initial inspection revealed distress in a number of the exposed beam end pockets that housed gang-plate assemblies. Several anchorages had dislodged and exposed post-tensioned tendon, indicating that a break in the individual tendon assembly had occurred. Tensile cracks had appeared in the beams at many locations of positive moment throughout the structure.

Subject Headings: Parking facilities | Tension | Tendons | Beams | Inspection | Corrosion | Rehabilitation

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