It all depends on the span and how solid you want the dock to be. I'd go with 3 2x6's for a 8'-10' dock. One each side, and one down the center.

When using the new treated wood, stainless steel screws are recommended, not galvanized.


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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).