esshup,
Washing down and driving hollow steel pipe is a whole different ballgame - and it sounds like a huge improvement for his situation.
How did you tie the wood dock elements to your steel support structure?
The wood hasn't been tied to the steel pipe at all. It sits on top of the horizontal pieces. Been sitting there without moving forever. 4' wide dock, three 2x8 stringers running the length of the dock, cross bracing of more 2x8's between the stringers (or joists). Dock is "L" shaped, roughly 60 feet long. I can't remember, but I think the pipes were installed at either 8' or 10' intervals. Decking was 2x6's, and when that deteriorated, it was changed to extruded plastic, which we found out is EXTREMELY slippery when there is snow/ice and somewhat slippery with water on it. But it is only slippery in the direction that the boards are running, which is 90° to how you usually walk on the pier.
