bowfishersmith,
Here is what we did with our fixed dock. We initially started using
Brettski's design but found stainless steel connectors to be quite expensive. Ended up extending the concrete piers above the water line and using ZMAX connectors to attach the beams. We used 80lb bags of 5000 psi Quikrete, an electric mixer, and a 5-gallon bucket. Kicked the sides of the tube as we were pouring to even out the mix which worked extremely well.
Used 8" sonotubes with rebar, holes were augered to depth of 4'
Rebar consisted of 3 verticals (1/2") wrapped with mesh to keep it in place
Beams attached to columns, consisted of 2 2"x8" glued and nailed/screwed
The entire job was very labor intensive but we have been quite happy with the results. Top of the dock will set about 15" off normal pool. Still need to add the decking but the barn has taken priority as it is quickly turning into a 5 year project.
