stainless steel equipment base plate to galvanized beam 1

[delagina]

I'm mounting an equipment with base plate made of stainless steel. The platform it will be mounted on is galvanized steel and I'll also use galvanized bolt. I'm doing my research on this but if anyone can give a comment, I'd appreciate.

 

[MidwestSE]

Check out AISC design guide 27 (stainless steel). The correct way to do the joint (According to AISC) is to provide something to separate the stainless and carbon steels to prevent them from corroding. The detail they recommend (and I've used in practice) is to provide a neoprene pad between the ss and galv steel and use stainless steel bolts w/ neoprene bushings. The AISC design guide does say in as many words use of carbon/galv bolts in stainless steel should be avoided (because the contact between the 2 metals will corrode the carbon steel - aka the stainless plate will "eat up" your carbon/galv bolt).

 

[delagina]

Dood, can you provide me a detail drawing if you have one. Not sure how the neoprene bushing separate the stainless steel nut from the galvanized beam. Also I just call out neoprene or need to be more specific.

 

[bones206]

You might consider calling out a product like this to isolate the bolts: Link

For the base plate, you should be able to generically call out a neoprene gasket between the frame and baseplate.