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A ballot item to publish joint collaboration document S8.3, Hot-Dip Galvanizing Specification, from American Association of State Highway and Transportation Officials (AASHTO) and the National Steel Bridge Alliance (NSBA) has recently passed the NSBA Task Group 8 on Coatings, NSBA Main Committee, and AASHTO T14 committee on Structural Steel Design. The document has now gone to main AASHTO where it is expected to be rubber stamped at the June ballot deadline. This timeline likely means publication late in 2022.

AGA and several of our members were involved in the development of this standard over several years which primarily affects the bridge/highway industry. Included verbiage addresses DOT concerns regarding reactive steels, flaking, faying surfaces, and other quality concerns that result in elevated requirements for bridge projects. However, a large portion of the specification is comprised of non-mandatory commentary regarding design and fabrication best practices to improve HDG quality and appearance for bridges.

In the meantime, AGA will publish a side-by-side comparison of the S8.3 specification vs. ASTM A123 to highlight the differences.

For previous updates on the development of this specification:

Comments

David Nelson / Wisconsin DOT

Just wondering when the AASHTO/NSBA S8.3 Galvanizing Specification publication will become available.......Thank you for your response.

(AGA)

Hi David, To-date, the committee that developed the document (AASHTO/NSBA Task Group 8) has not received any update from AAHSTO on it's order in the publishing queue. We are being told AASHTO's publishing group is a little behind at the moment. We will publish another update once it is available. Thanks!

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