63 Wessel Road, Rivonia, Sandton

Geotechnical Engineering 


Geotechnical Engineering and Engineering Geology is an essential component of civil engineering, mining, petroleum, or any other engineering concerned with construction on or in the ground. This discipline supplied by GCS in-house, uses principles of soil mechanics and rock mechanics to investigate subsurface conditions and materials; determine the relevant physical, mechanical and chemical properties of the materials; evaluate stability of natural slopes and man-made soil deposits; assess risks posed by site conditions; design earthworks and structural foundations; and monitor site conditions, earthworks, and foundation construction.

The GCS Geotechnical and Engineering Geology unit draws its experience from several different divisions within the company including Water, Waste, Environmental and GIS

Typical Geotechnical Engineering projects begin with a review of project needs to define the required material properties. Then follows a site investigation of soil, rock, fault distribution and bedrock properties on and below an area of interest to determine their engineering properties including how they will interact with, on or in a proposed construction. We especially provide a very close combination between the above and Hydrogeology.

Site Investigations:

Investigations for:

o    Housing developments (including NHBRC classification)

o    Commercial, industrial, and port developments

o    Pipelines and tunnels

o    Roads, rail and infrastructure

o    Dams, resevoirs, and pipelines

o    Mining infrastructure

o   Construction Planning Report

o    Geotechnical and Geomorphical Terrain Evaluation

o    Dolomite stability investigations for infrastructure

o    Investigations for borrow pits and quarries and evaluation of construction materials

o    Investigations for renewable engergy projects (solar, wind and hydro)

o    Investigations of the stability of Slimes Dams (TSF)

v   Analysis and Design

Geotechnical analysis and designs for:

o    Slope stability analysis and design

o    Ground improvement.

o    Design of lateral support and retaining structures

o    BDesign of earth dames and canals

o    Design, compliance, and inspections in accordance with GISTM regulations of existing and new TSF's

o    Desgisn of cut-off walls and diaphragm walls

o    Earthworks managements and quality assurance control

o    Instrumentation and monitoring of structures

o    MSite inspection and approval of foundation excavations

v   Fields of experience

o    Mine Waste Storage Facilities and Dams.

o    Mine Pit and Slope Stability.

o    Mine Rehabilitation Studies (cover design and compaction studies)

o    Water Causeways and Culverts

o    Bridges, Roads and Tunnels

o    Power Lines

o    Dolomite Stability and Undermining Investigations

o    Rural and Urban Infrastructure Investigations (schools and hospitals)

o    Housing Development Site Assessments

o    Material Assessments and Usage

o    Ground Improvement

o    Construction Planning Investigation and Report


   For all Geotechnical Engineering enquiries please contact