Weathering Steel Poles w/ Galvanized Hardware

[condaits]

Hi All -

I have a client questioning the use of galvanized attachment hardware on weathering steel poles. I found an old post questioning this very thing
"MikeDB (Structural)
11 Feb 04 10:42
The January 2004 issue of Modern Steel Construction had a "Steel Interchange" response by Keith Mueller on design considerations for weathering steel structures. Several of the recommendations, which are based on United States Steel Corp. literature, have led me to question practices on electric utility transmission lines. The manufacturer recommends against the use of galvanized hardware or placing treated wood products on weathering steel. I know that many utilities are using weathering steel poles as a replacement for wood poles.

Does anyone know of research that has been done which would indicate that the mfr. recommendations were too conservative? Has anyone replaced weathering steel poles that have been in service for a long time and observed problems or seen premature failures? Does anyone take special precautions for connections on weathering steel poles?

Thanks for your feedback.

Mike "

But it did not have any replies. Does anyone have any information regarding this?

 

[MikeDB]

I posed this question to the ASCE Steel Transmission Pole committee and the general consensus is that there is no problem using galvanized hardware with weathering steel. It is a very common practice and no one in the group reported any evidence of problems.

Our company continues to specify galvanized hardware with weathering steel poles, although we do like to see a galvanized washer used between treated wood and weathering steel. We have two clients that use weathering steel poles on a regular basis and neither has reported any problems to us.

Good Luck and let us know if you find any evidence of a problem.

Mike