Our concrete docks are installed on an existing cap or tied into an existing seawall cap and then secured into concrete piles. Concrete caps are constructed with a mat-tied steel rebar mat, formed and poured with a minimum of 3,000 psi concrete pump mix. The minimum concrete dock thickness is 8". An All Power Marine Concrete Dock with concrete piles usually last a lifetime. Trust All Power Marine Boatlifts & Docks, Inc. to install or repair your concrete dock in South Florida.