The Claremont on the Park project involved construction of a two level basement associated with a large scale residential development in Claremont, WA. Belpile were successfully awarded this project due to a design and construct alternative utilising a smaller diameter pile and increased number of temporary ground anchors. This resulted in a solution with lower materials requirements and minimised the spoil volume for the primary contractor. The variable limestone strength and depth required the use of both conventional CFA and cased CFA (double rotary) techniques. The cased CFA system was employed where high strength limestone was encountered and provided improved positional and verticality tolerances.

The project scope involved installation of over 950 No. 450mm diameter piles, 180 temporary ground anchors (grouted high tensile strand) and microfine grout injection. Belpile designed and certified all elements of the ground retention system. We minimised design risk associated with variable ground conditions by undertaking rigorous addition geotechnical site investigation. The fast tracked nature of the project also required Belpile to be flexible with re-design when structure changes occurred mid project. Belpile also assisted with the design and earthworks specifications for the pile install platforms/berms, which involved additional slope stability and bearing capacity checks to ensure the 100t machine could be safely supported.

The project required Belpile to provide 2 piling operations and an anchoring crew working simultaneously to meet the main contractors program. Despite several challenges on a congested urban site Belpile were able to successfully deliver the piling works on time.