DFS provides design solutions for deep foundations such as Bored Piles, Continuous Flight Auguer (CFA) Piles, Drill Displacement Piles (Hybrid CFA) Atlas Piles, Driven Precast Piles such as Concrete Precast and Steel Screw Piles. DFS also provides design solutions for deep basement walls such as Soldier Piles, Concrete Contiguous Piles and Secant Pile walls constructed with both CFA, Cased CFA and Bored Pile techniques. Solutions also include Sheet Pile walls, including Combi Walls with Steel Tubes.