FSG Geotechnics provides earthworks and pavement investigation and design services underpinned by practical engineering judgement and a detailed understanding of complex ground conditions, supporting projects from early investigation through to design, verification and construction.
We work across infrastructure, resources and industrial sectors, delivering advice on earthworks, flexible and rigid pavements, sealing and asphalt surfacing, and rehabilitation strategies. Our approach integrates targeted site investigations, material characterisation and analytical assessment to develop robust, constructable designs and specifications, including the considered use of marginal and sustainable materials where appropriate. We also undertake forensic investigations to identify failure mechanisms and inform effective remediation.
Our capability spans pavement, materials and geotechnical investigations, analysis and reporting, development of material specifications, ground improvement and earthworks verification, with construction-phase support including inspection, testing, and advice during earthworks and pavement construction, sealing and asphalt placement. Acting as technical lead on projects ranging from targeted investigations to large, multi-stage programs, we deliver practical design outcomes supported by strong technical knowledge, with a focus on durability, constructability and compliance with relevant standards and guidelines.
Subgrade assessment and materials investigation.
We undertake detailed subgrade assessment and materials investigations to define ground conditions, material properties and associated risks. This includes site investigations, sampling and laboratory testing, material identification and sourcing, and characterisation of in-situ and imported materials.
Our work informs earthworks design, ground improvement requirements and construction methodologies. We provide clear recommendations on foundation preparation, subgrade treatment and material suitability, supporting efficient construction and long-term pavement performance.
Pavement design and material specification.
FSG develops pavement designs and material specifications suited to project-specific loading, environmental conditions and constructability constraints. This includes flexible and rigid pavement design, surfacing selection (seals and asphalt), and rehabilitation strategies such as stabilisation.
We prepare detailed, project-specific specifications covering earthworks, foundations, pavement materials and surfacings. Our designs are supported by proven design methods and aligned with relevant standards, providing clients with practical, buildable solutions and confidence during construction and operation.
What we do