STS Geotechnics

Engineering
Certainty Below the Surface.

STS Geotechnics delivers geotechnical site investigation, foundation engineering, and engineering geology for commercial, residential, and infrastructure projects — signed off by Chartered Professional Engineers and backed by an in-house laboratory.

1988
Operating since
NATA
Accredited laboratory
AS 1726
Compliant reporting
What We Do

Geotechnical Engineering,
Done Properly

STS Geotechnics provides geotechnical site investigation and foundation engineering — practical, cost-effective designs grounded in site data and signed off by a Chartered Professional Engineer with direct responsibility for the findings. Field drilling, sampling, and in-situ testing are delivered by GeoSense, our in-house drilling and field investigation arm, so the data behind every recommendation comes from our own crews.

STS Geotechnics engineering analysis
Geotechnical Engineering

Subsurface Certainty,
Engineered

Geotechnical Site Investigation

AS 1726 compliant investigation reports for planning permits, development applications, and construction sign-off.

Foundation Engineering & Design

Raft slabs, strip footings, and piled foundations — practical, cost-effective designs grounded in site data.

Slope Stability Assessment

Stability analysis and remediation advice for cut slopes, embankments, and natural hillside sites.

Pavement & Subgrade Engineering

Subgrade characterisation, CBR testing, and flexible & rigid pavement thickness design for roads and carparks.

Reactive Clay & AS 2870 Classification

Site classification and footing design recommendations for residential construction on reactive soils.

Retaining Wall & Earthworks Design

Earth pressure analysis and practical retaining structure design for cut, fill, and terraced sites.

Work With Us

Ready to Start
Your Investigation?

Tell us about your project and site. We'll respond within one business day with an investigation approach and fixed-fee proposal.

Send an Enquiry +61 2 9756 2166