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FDOT Procedures for Welding, Testing, and Fabricating Weathering Stainless Steel for Bridge Applications
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2021-04-30
[PDF-1.23 MB]
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Edition:Final Report, April 2020 – April 2021
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Abstract:Weathering steels have been gaining acceptance in the fabrication of highway structures and bridges across the US. Over the last decade, several transportation agencies have made concerted efforts to utilize weathering steels for structures in areas where they can be used safely and effectively. The primary factor for this change is the potential cost‐effective savings in maintaining these structures over the course of their lifespan. Weathering steels do not require coatings and can offer significant savings as compared to the maintenance of coatings on a typical bridge or highway structure. Weathering stainless steel, such as ASTM A709 Grade 50CR, has been utilized in various applications by several DOT’s across the US, with successful results. Florida Department of Transportation (FDOT) has been considering the implementation of weathering stainless steels in the fabrication of new bridge and highway structures, where challenging environmental conditions are present. This document is the first step in developing comprehensive procedures for the welding, testing, and fabrication of weathering stainless steel for bridge applications.
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