What’s Wrong With My Precast Concrete Garage?


Precast double-tee construction has become a dominant method for building parking garages in North America. The double-tee beam deck system of this construction type provides a finished wearing surface, supports vehicle loading, and forms an integral part of the lateral force-resisting system. However, maintenance and repair of deck connections is a common problem with this type of construction. The most common cause is perhaps the least considered.

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More on duplex stainless steel and bridges

Pedelta’s Cala Galdana Bridge in Menorca, Spain, uses duplex 2205 stainless steel structural components. Photo © Juan Sobrino

In the May 2015 issue of The Construction Specifier, Catherine Houska, CSI, discussed how duplex stainless steels are being specified for numerous structural applications. This complementary web piece looks at a few additional projects from around the world that make use of this versatile material’s attributes.

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Duplex Stainless Steel Revolutionizes Structural Design

duplex_San Diego 01-Cropped Kaplan

Architectural and engineering firms are increasingly exploring stainless steel’s possibilities as a structural material as new research, structural codes, and design guides become available. Most designs have used the familiar Types 304L or 316L alloys from the austenitic family of stainless steels, but for all but the lightest sections, the duplex stainless steel family presents a much greater potential for innovation.

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Bearing Pad Durability in Precast Concrete Garages

garage_File Opener

Bearing pads are used widely in precast concrete parking garages. They function as buffers between the separate concrete members to prevent damage and facilitate movement (much like cartilage between bones at joints). Bearing pads should last for the design life of the structure, but need to be replaced when they are not sufficiently durable. The ‘surgery’ to replace the pads properly is a complex operation, with few published guidelines.

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The Track to Span 3: Genesis of the innovative Manhattan West Platform

Photos courtesy Entuitive

The Manhattan West Platform is the first stage in a vibrant urban development that will serve as the foundation for public and new commercial space. This article discusses the unique structural challenges in designing an innovative platform structure over the tracks leading into New York City’s Penn Station while minimizing, or completely avoiding, disruption of rail service to North America’s busiest rail corridor.

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