Piling

Shoring Piles are utilised as part of the construction of shoring walls. Shoring piles are structural cast in place concrete piers which are drilled from ground level prior to the commencement of excavation. Shoring piles are utilised for Soldier pile walls, Contiguous pile walls, and Secant pile walls.

Contiguous Shoring Piles are cast in place structural piles which are closely spaced with gaps of between 50-100mm between each pile. Contiguous piles are utilised when the substrate is collapsible, water ingress is expected, or as a load bearing element. Drainage strips are placed in the gaps between the piles prior to grouting the voids. Alternatively, shotcrete can be sprayed over the face of the piles with a min.50mm coverage for a more consistent finish.

Soldier piles walls are the most common type of shoring system for basement excavations. The piles on soldier piles walls are separated by gaps/panels of between 500mm to 2500mm. As excavation is undertaken in stages as determined by an engineer, reinforcement mesh is fixed to piles and panels are subsequently sprayed with shotcrete. This retains the substate between the piles and delivers a cast in place concrete panel finish. Stable substrate is required to undertake soldier pile shoring systems to avoid any collapsing of material prior to the application of shotcrete.

Secant Piles systems are shoring walls in which the piles overlap. These overlapping piles create a watertight structural wall which may be load bearing. Secant pile walls are undertaken when the substrate is highly collapsible or there is significant water ingress. To undertake a secant pile wall, a guide wall must first be constructed to form a Mould for the piles to be drilled so as to achieve the overlapping of piles. ADN earthworks are experienced in the construction and design of secant piles shoring systems, contact us for further information.