RETAINING WALLS

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About Piled Retaining Walls

Retaining walls can be created by installing a series of piles close together. These embedded piles create structurally sound walls for a wide range of applications such as basement excavations.

Contiguous Piling

Contiguous bored pile walls are generally used for sites where groundwater is not an issue. The concrete piles are positioned so that they almost touch each other leaving a gap of around 100mm between each pile. Once installed the piles are tied together with reinforced concrete capping beams, forming a robust retaining wall.

Secant Piling

The secant retaining wall system involves the installation of the piles in such a way that they overlap using a male and female pattern. This technique forms a watertight seal and therefore provides a solid barrier against groundwater flow. Similarly to contiguous piled walls, the piles are then tied together using capping beams to form a robust structure which allows further ground works and excavations to take place in a safe and reliable environment.

King Posts

King post walls can be used for retaining ground where small settlements and ground movements are not critical to the project or the ground behind the retaining wall. A line of bored piles are installed with long steel H-sections projecting from them. The gaps between the H-sections are then filled with timber inserts such as sleepers or pre-cast concrete planks.

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