On Feb 14, 8:47*pm, wrote:
Has anyone built a floating dock using 55 gallon plastic barrels? I
have 5 available and would like to make a dock that is at least
12x12 . Does anyone have any easy plans to use or suggestions? Thanks!

Check the regulations at your location. On some army corp run lakes
docks
made from barrels are not allowed.

If you want it to not sink in case they get punctured fill them with
expanding foam from these guys www.uscomposites.com