Galvanized Angle and Stainless Steel Anchors

[dcarr82775]

I have a condition where I need to bolt a steel angle to concrete. This angle will hole up a floor. It is a location on the inside of a cut off wall (fresh water). The wall will leak a little, but for design I am assuming it will be wet for long periods of time. I don't like epoxy for sustained tension loads so I am looking at expansion bolts.

The angle will be galvanized. The cracked concrete approved anchors available appear to be stainless. The is a galvanic corrosion condition with this condition, but most of what I can find indicates it is not a concern except in some marine conditions. While I don't think this qualifies as marine, I do think it is worse than your average exterior application.

What do you all think about the corrosion potential for this?

 

[DaveAtkins]

I think it is fine. The anchors won't corrode, and while there may be a small area of corrosion in the angle at the anchor location, I would not be concerned.

DaveAtkins

 

[KootK]

X2. See page 25 of this document: Link. According to Hilti:

1) A galvanized substrate is ok with any kind of fastener.
2) A stainless steel fastener is okay with any kind of substrate.

This is from the perspective of fastener corrosion only. I believe that the substrate is assumed to be ok by virtue of the ratio of anode to cathode argument.


I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

 

[Ron]

Agree with above...have used many times for aluminum and galvanized anchorage.

 

[dcarr82775]

Thanks all.

 

[XR250]

I don;t have a problem with it, but it seems those pesky galvanic potential charts always say the sky is falling.