In Perth, ground improvement addresses the challenges posed by the Swan Coastal Plain’s variable Quaternary sediments, including loose sands subject to liquefaction and soft compressible clays. Our category covers techniques that densify in-situ soils and reinforce the ground to meet the bearing capacity and settlement criteria of Australian Standards AS 2159 and AS 4678. For sites requiring load transfer through weak strata, stone column design provides a reliable solution, while vibrocompaction design is applied to granular profiles to mitigate seismic settlement risk.
These methods are critical for residential subdivisions over paleochannels, industrial warehouse slabs, and transport corridor embankments where deep excavation and replacement prove uneconomical. Our approach integrates site-specific seismic hazard assessments per AS 1170.4, ensuring treated ground performs under Perth’s design earthquake scenarios. Further support extends to liquefaction mitigation and verification testing protocols that confirm compliance during construction, delivering certifiable outcomes for developers and civil contractors.