APG delivered 2100mm diameter bored monopiles up to 37m deep for the Sydney Metro West viaduct, accelerating the foundation programme by approximately six months across multiple concurrent work fronts.
Australian Piling Group (APG) was engaged to deliver the foundation piling works for the Surface Civil and Alignment Works (SCAW) package of Sydney Metro West, supporting the viaduct structures and associated rail infrastructure along the alignment. Sydney Metro West is one of Australia’s largest transport infrastructure developments, improving connectivity across Greater Sydney.
APG’s scope centred on large-diameter bored-pile foundations delivered across multiple work fronts, executed alongside ongoing earthworks, civil, structural, and rail infrastructure activities, with strict compliance with safety, quality, and construction sequencing requirements throughout. APG successfully brought forward key piling activities by approximately six months, providing significant programme benefits to the Head Contractor and the broader project team.
A single large-diameter monopile per pier provided the load capacity required for the viaduct structure while reducing foundation footprint and excavation across constrained work fronts.
Where pier loading and ground conditions required it, four-pile groups were installed in place of a single monopile, giving the project team flexibility to address varying foundation demands along the alignment.
APG deployed its large-capacity piling fleet alongside support cranes, concrete pumps, steel tremie pipes, and temporary segmental steel casings, supported by experienced crews working across multiple concurrent work fronts. A 100-tonne Kobelco crawler crane was used to lift and splice the large reinforcement cages into position, coordinated against active earthworks, civil and rail activities.
The project required critical foundation works to be delivered within demanding programme constraints across multiple work fronts. Through strategic resource allocation and deployment of APG’s large-capacity fleet, and efficient execution, APG brought foundation works forward by approximately six months, providing significant programme benefit to the Head Contractor and the broader project team.
The 2100mm monopiles and pile group foundations required extremely large and heavy reinforcement cages. Due to their size and weight, cages were fabricated in multiple sectors, spliced on site, and lifted into the excavation using APG’s 100-tonne Kobelco crawler crane. These operations demanded detailed lift planning, precise cage alignment and close crew coordination to achieve safe installation within strict quality and tolerance requirements.
Constructing 2100mm diameter monopiles and deep foundation piles required specialised equipment, experienced personnel and rigorous quality control to ensure full compliance with project specifications across every pile.
Works were undertaken alongside major earthworks, civil, structural, and rail infrastructure activities. APG applied detailed planning, structured work staging, and constant coordination with adjacent contractors to maintain programme requirements across all work fronts safely.
