Road geotechnics in Perth addresses the unique challenges posed by the Swan Coastal Plain’s sandy soils and the presence of reactive clays in the eastern foothills. This category covers site investigation, subgrade evaluation, and pavement structural design in accordance with Austroads guidelines and Main Roads Western Australia specifications. A critical early step is the CBR study for road design, which quantifies subgrade strength to inform the selection between our flexible pavement design and rigid alternatives.
These services are essential for projects ranging from residential subdivisions in new growth corridors to heavy-duty haul roads in the Pilbara. For industrial hardstands and bus lanes subject to high static loads, our rigid pavement design provides long-term durability with reduced maintenance. A sound geotechnical framework ensures pavement longevity against Perth’s cyclic wet-dry seasons and saline groundwater conditions.