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Large load capacity screw piles may have various components such as flat half helices, Bisalloy cutting tips and helices, cap plates or rebar interfaces for connection to various concrete or steel structures. Most industries use screw piling experts due to the cost efficiencies and, increasingly, the reduced environmental impact.
The screw-shaped shaft of an excavated Olivier Pile An Olivier pile is a drilled displacement pile:. [ 1 ] This is an underground deep foundation pile made of concrete or reinforced concrete with a screw-shaped shaft ( helical shaft ) which is performed without soil removal.
Screw piles, also called helical piers and screw foundations, have been used as foundations since the mid 19th century in screw-pile lighthouses. [citation needed] Screw piles are galvanized iron pipe with helical fins that are turned into the ground by machines to the required depth. The screw distributes the load to the soil and is sized ...
Another way to install ready-to-build foundations that is more environmentally friendly is to use screw piles. Screw pile installations have also extended to residential applications, with many homeowners choosing a screw pile foundation over other options. Some common applications for helical pile foundations include wooden decks, fences ...
Typically in the form of a horizontal wire or rod, or a helical anchor, a tieback is commonly used along with other retaining systems (e.g. soldier piles, sheet piles, secant and tangent walls) to provide additional stability to cantilevered retaining walls. [1]
Franki piles can be used as high-capacity deep foundation elements without the necessity of excavation or dewatering. [4] They are useful in conditions where a sufficient bearing soil can only be reached deeper in the ground, [5] [6] and are best suited to granular soil where bearing is primarily achieved from the densification of the soil around the base. [4]