On Feb 12, 10:54*am, "Dan Listermann" wrote:
I want to build two docks, one permanent and a floating one. *The floating
one will be supported by 15 gallon plastic drums. *I can get 55 gallon, but
for a 4 x 8 dock, I worry about center of gravity issues.

The permanent one will be built of 55 gallon drums filled with dirt. *Any
issues to look out for?

and again build it so the barrels can fall out when they get full of
water or your dock will sink lower and lower.
those plastic barrels will eventually fill all you need them to do is
push up so it costs you nothing to make the darn thing safer