Earth Retention & Shoring

Ground anchors are an effective method to counteract forces that could destabilise structures and foundations and can be used in all soil types. Ground anchors can be used as a stand alone shoring or retention solution, or as part of an integrated ground engineering solution where they can reduce pile diameters, size and distancing.

Congested site footprints and strict programming or sequencing of civil works are common on suburban and CBD construction sites. Soil nails offer a range of advantages where soil conditions allow, including fast and cost efficient installation at the same time as excavation works begin, as well as smaller and more agile plant, or suspended (crane) work platforms.

Secant and Contiguous Piles are common embedded retaining wall methods that allow for construction of below ground structures extending to site boundaries. For deeper excavations, particularly in CBD locations, Secant and Contiguous Piles minimise vibrations and can support loads from adjacent structures, and can be propped or cantilevered depending on site and project specific requirements.

Soldier Piles are another form of embedded retaining wall which allow for excavations to proceed and lower the ground level in front of the wall. As excavations progress, the retained height of the wall can be increased using propping or ground anchoring methods. Shotcrete Piles are most commonly used in single sided basement (embedded retaining) walls that have been constructed with Secant or Contiguous Piles.

Micro piling works are undertaken to overcome a range of complex or variable subsurface conditions – including mid-works modifications to accommodate changing soil profiles. BRC Piling & Foundations have the rigs and tooling to carry out micro piling works to support different structures and loads, as well as site specific geotechnical requirements.

Sheet piling is most commonly used to provide temporary excavation support for the construction of basement structures, including below ground car parks and lift cores. Sheet piles are also common to specialist marine works programmes involving coffer dams or seawalls and riverbank protection. Sheet piles are installed in sequences and can be constructed of recycled steel and re-used.