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Corrosion effects on structural steel exposed to water

Corrosion effects on structural steel exposed to water

Corrosion effects on structural steel exposed to water

(OP)
I have an application where I am using HSS to frame a cofferdam.  The dam should only be in the river about 6-12months.  The steel will not have any protective coating.

Do I need to take into account the reduction in strength due to the steel corroding?  Or is the corrosion insignificant due to the short period of time it is being exposed to the water?  

Any direction on resources or information would be appreciated

RE: Corrosion effects on structural steel exposed to water

Nowhere near enough detail. Need to know if the steel is totally submerged. Water oxygen content, temperature, salinity and velocity.  

RE: Corrosion effects on structural steel exposed to water

In general, I would say that 6-12 months in freshwater is not enough time to cause a significant reduction in strength, but if I were "engineering" such a system, I would be investigating/confirming the details that cloa mentioned...

RE: Corrosion effects on structural steel exposed to water

(OP)
thanks for the responses, this helps!

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