Geotechnical Investigations are carried out to acquire the information on the physical properties of soil for proposed structures and for repair of distress to earthworks and structures caused by subsurface conditions. Also, geotechnical investigations are also used to measure the thermal resistivity of soils or backfill materials required for underground transmission lines, oil and gas pipelines, radioactive waste disposal, and solar thermal storage facilities. A geotechnical investigation will include surface exploration and subsurface exploration of a site. Subsurface exploration usually involves soil sampling and laboratory tests of the soil samples retrieved.
Geo technical Investigation is very important before any structure is built– whether it is your own dream house, an industrial shade, a multiplex, a shopping mall, a warehouse, a multi storied building or even small and big infra projects like bullet train. metros and so on.
Surface exploration can include geologic mapping, geophysical methods, and photogrammetry or it can be as simple as a geotechnical professional walking around on the site to observe the physical conditions at the site.
An important basis for the planning and construction of building and infrastructure projects (comprising various types of structures as foundation, excavation pit, land reclamation, beach nourishment etc.) is the knowledge of the ground conditions. For this purpose, the geotechnical investigation with its respective services shall be carried out. Their nature and extent depends on the type of the structure, the difficulty of the structure and the expected ground conditions.
There are few important steps to be followed as part of exercises for Geotechnical Investigations;
Data Gathering from Field including Topographical Survey
Agenda of Study
The services for the geotechnical investigation will be provided and implemented with strict adherence to international standards and guidelines. The quality & the time deliverance of the projects is guaranteed at Epitome.
Geology maps and regional geological study at all required parameter
Agenda of Study
List of technical standards to be applied (geotechnical site investigation, drilling methods in soil / rock, sampling of soil / rock / groundwater, field testing, geotechnical laboratory testing of soil / rock / groundwater characteristics)
Number, mapping / location, depth of boreholes
Soil and rock drilling & sampling methods (Soil Investigations)
Number of standard penetration tests (SPT)
Number of field vane shear tests
Number of disturbed and undisturbed soil samples
Number of undisturbed rock samples
Ground water sampling
Geotechnical laboratory testing schedule
Work planning on manpower and equipment
Mobilization and De-mobilization of geotechnical drilling team, supervision personnel and equipment
Survey for bore-well points
Soil Sampling & Soil Investigations
Rotary Core Drilling and Rock Sampling
Standard Penetration Test (SPT)
Field Vane Shear Test (VST)
Cone Penetration Test (CPT) Geotechnical Laboratory Testing within Geotechnical Investigation
Index property tests (determining of soil classification)
Engineering properties tests (determining of strength and deformation parameters)
Rock Strength Properties Tests
Chemical Analysis of Groundwater
Geotechnical Investigation Report
The detailed Report will be provided and prepared tailor-made for each project according to the respective project scope of service. The following table of content is a standard table of content that will be adjusted according to the project scope of service:
Description of the works performed
Geotechnical Field Investigation
Drilling of boreholes
Rock coring and rock sampling
Standard penetration tests
Field vane shear tests
Cone penetration tests
Geotechnical Laboratory Testing
Index properties tests (moisture content tests, Liquid Limit, Grain sizeunit weight tests, specific gravity tests, atterberg limits tests, particle size distribution tests)
Results on chemical ground water analysis and evaluation of level of aggressiveness to structures
Conclusions and Recommendation
Detailed analysis of Soil condition at site
Recommendation about proposed infrastructural projects, if required
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