In Bendigo, seismic site assessment addresses how local ground conditions amplify or attenuate earthquake motions, guided by AS 1170.4 and site classification principles. With Paleozoic bedrock variably overlain by Tertiary gravels, clays, and alluvial fills, impedance contrasts can significantly alter shaking intensity. Our seismic amplification analysis quantifies these effects through shear-wave velocity profiling, while soil liquefaction analysis evaluates the susceptibility of saturated granular layers in creek corridors and historic mining backfills to strength loss under cyclic loading.
These investigations support structural design, slope stability assessments, and infrastructure resilience for projects ranging from multi-storey developments in the Bendigo CBD to mining rehabilitation and water-retaining structures. For precinct-scale planning, seismic microzonation delivers hazard maps that inform land-use decisions and development controls across variable regolith profiles. Compliance with the NCC and local authority requirements ensures seismic performance targets are met efficiently.
Full determination per AS 1289.3.1.1 and 3.2.1. Includes liquid limit by Casagrande cup, plastic limit by thread rolling, and calculated plasticity index. Suitable for all fine-grained soils in Bendigo.
Measures the shrinkage of a soil bar when dried from its liquid limit condition. Essential for predicting ground movement in reactive clays common in the region.
Atterberg results plus full USCS classification (including grain size distribution and organic content). Delivers a complete soil identity for foundation design.
If initial results show borderline plasticity or field conditions change, we re-run Atterberg limits on fresh samples to confirm consistency before final design decisions.
AS 1289.3.1.1 – Determination of liquid limit (Casagrande method), AS 1289.3.2.1 – Determination of plastic limit, AS 1289.3.1.1 – Standard test methods for liquid limit, plastic limit, and plasticity index of soils
The typical range for a standard Atterberg limits test (LL, PL, PI) is AU$80 – AU$180 per sample. This can vary depending on the number of samples, required turnaround time, and whether additional classification tests are bundled.
Bendigo's soils range from low-plasticity sands near the hills to highly expansive clays in the floodplain. Atterberg limits are the only way to quantify plasticity and predict shrink-swell behaviour. Without this test, foundation design for reactive soils is guesswork.
Yes. The plasticity index directly influences subgrade stiffness and susceptibility to moisture changes. In road design, Atterberg results help select stabilisation additives (lime, cement) and are often combined with CBR testing to set design subgrade values.