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2 of 9 <br /> Pile capacities for the concentric piles have been calculated utilizing the effective cylinder area of the Power <br /> Team C25C hydraulic cylinder used with the Stabil-Loc Foundation Piering Systems assembly. A chart <br /> showing the resulting capacities is attached to this letter. Per the attached document, a Stabil-Loc 2-7/8" <br /> diameter concentric pile installed to a minimum pressure of 7,100 psi results in a maximum allowable capacity <br /> of 18.2 kips including a safety factor of 2. <br />