Corrosion of Marine Bollard Bolts 1

[brf007]

thread321-193907

Did an inspection of some bollards yesterday and every bolt was damaged by corrosion to various degrees?

I'm thinking of stainless steel bolts for the remeidial spoecification? Has no one else thought of this? Surely not!!

I've done an online search without success of finding any previous mention.

Maybe the strength requirements over ride the maintenance costs of replacing bolts on a regular basis?

Be interested in others thoughts & comments? Thanks.

 

[unclesyd]

I've never seen anything but fully HDG bolts used for this purpose. Recently a very large project here on the Gulf Coast was supplied with all fully HDG anchor bolts for the bollards.
There is one problem I've heard mentioned with the newer HDG fasteners is the ones HDG with no lead aren't holding up as well a the older ones with lead.

Here are a couple of papers on Bollardology.

http://esvc000269.wic030u.server-web.com/products/pdf/Bollards.pdf

http://www.trelleborg.com/iesa/files/iesa construction & fentek spain/bolardos ing.pdf