salt spray

huangyhg

salt spray
how close to the ocean do you need to be to have to spec stainless steel wood to wood connectors?
residential construction i would consider 2 or 3 blocks from the ocean for sst or heavy hot dip galv wood connectors and fasters,  1/4 mile for exterior siding sst fastners.  
i have read that sea salt has been detected 200km inland, but that is probably excessive for your spec.
geography also plays an important part, for example in the southeast us salt water estuaries extend miles inland from the ocean (10 or 15 miles is not uncommon). salt induced corrosion can still be a problem for waterfront exterior structures at those locations.
my house is 1/2 mile from the gulf of mexico, only from huricanes do we get any  salt spray.  i based my earlier answer from my observations and exprience.
thank you for the replies.
the small building i'm looking at is 10 miles from the gulf.  we have exterior exposed connectors as well as ones on the interior.  just from a liability standpoint and the fact theres no hard references saying yay or nay, it looks like the zmax or even hot dipped coatings are appropriate.  the design/build contractor may complain, but oh well.
pressure-treated preservative may be a bigger concern than salt spray.  see