SOLDIER PILE SHORING:
Soldier pile Shoring are non-gravity cantilevered walls that provide support through the stiffness of the vertical wall elements and passive resistance from the ground below the finished grade. They are effective earth retention systems in both “fill” and “cut” wall situations. Soldier pile systems can be used as permanent retaining walls and as temporary shoring.
Soldier pile walls consist of soldier pile beams (steel HP or W sections) that are vertically driven or concreted into drilled holes. The structural lagging, which spans the pile spacing, typically consists of horizontally placed timber, steel plates, concrete sections, or reinforced concrete. For wall heights in excess of about 15 feet, additional resistance to active earth pressures may be provided by tieback anchors, dead man anchors, or internal bracing.
SHEETPILING SHORING:
Sheet pile walls provide retention support through the stiffness of continuous vertical wall elements and passive resistance from the ground below the finished grade. They are an effective shoring system which retains not only earth pressures, but also water. Additionally, sheet pile walls are very useful in cases of very soft clays, which have little shear strength and arching capability.
Sheet pile walls consist of interlocking steel members, typically “Z” shaped, that are vertically driven or vibrated to a determined depth below the base of the retained material. The interlocked steel sheet piles provide a continuous semi-impermeable wall, which additionally can be used to prevent basal heave. For wall heights in excess of about 4.5 meters, additional resistance to active earth pressures may be provided by tieback anchors, dead man anchors, or internal bracing.
SECANT PILE WALL SHORING
Secant pile walls provide a cutoff system and lateral support through overlapping drilled shafts that form a continuous wall. Typically every second shaft is reinforced with a steel beam or reinforcing cage and the intermediate shafts are filled with lean concrete. Secant pile walls are effective at retaining saturated soils, preventing water seepage, and preventing loss of retained soil during excavation. For wall heights increase additional resistance to active earth pressures may be provided by tieback anchors or internal bracing.