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Dry-stacked gravity walls are rather versatile and do not require a stiff footing. Previously in the 20th century, taller keeping walls were frequently gravity walls made from big masses of concrete or stone. Today, taller retaining walls are increasingly built as composite gravity walls such as: geosynthetics such as geocell cellular confinement earth retention or with precast dealing with; gabions (stacked steel wire baskets filled with rocks); crib walls (cells built up log cabin design from precast concrete or wood and filled with granular product).

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These walls cantilever loads (like a beam) to a large, structural footing, transforming horizontal pressures from behind the wall to vertical pressures on the ground below. Often cantilevered walls are strengthened on the front, or include a counterfort on the back, to enhance their strength withstanding high loads. Buttresses are short wing walls at ideal angles to the primary pattern of the wall.

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This type of wall utilizes much less material than a conventional gravity wall. Diaphragm wall [modify] Diaphragm walls are a type of keeping walls that are extremely stiff and generally watertight. Diaphragm walls are expensive walls, however they save time and space, and hence are used in city constructions. Sheet piling [modify] Sheet pile keeping walls are generally used in soft soil and tight areas.

For a quick quote the material is typically driven 1/3 above ground, 2/3 listed below ground, however this might be altered depending on the environment. Official Info Here will need a tie-back anchor, or "dead-man" placed in the soil a distance behind the face of the wall, that is tied to the wall, typically by a cable or a rod.

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Bored pile [modify] Bored stack retaining wall in Lisbon, Portugal Bored pile maintaining walls are developed by assembling a sequence of bored stacks, followed by excavating away the excess soil. Depending on the task, the bored pile maintaining wall may consist of a series of earth anchors, reinforcing beams, soil enhancement operations and shotcrete support layer.

Anchored [modify] An anchored retaining wall can be built in any of the aforementioned styles but likewise consists of extra strength using cables or other stays anchored in the rock or soil behind it. Normally driven into the material with boring, anchors are then broadened at the end of the cable, either by mechanical means or frequently by injecting pressurized concrete, which broadens to form a bulb in the soil.