Geo-technical Investigation
Geo-technical investigation is a systematic process of studying, examining, and analysing the physical and engineering properties of soil, rock, and groundwater at a proposed construction site. This comprehensive assessment helps determine the strength, composition, stability, and load-bearing capacity of the ground, which are critical factors in ensuring the safety and durability of any structure. By providing accurate and detailed information about subsurface conditions, geo-technical investigations enable engineers and designers to select the most suitable type of foundation, anticipate and mitigate potential ground-related risks, and optimize construction techniques.
What is its working procedure:
Planning the Investigation
Defining the scope of work and determining the required boreholes, pits, in-situ tests, along with the suitable methods and equipment to be employed.
Field Exploration & Sampling
Drilling boreholes and digging test pits to study soil and rock layers, and collecting disturbed and undisturbed soil or rock samples for laboratory testing.
Laboratory Testing
Conducting detailed soil and rock tests, including grain size analysis, shear strength, compaction, consolidation, and chemical analysis.
Analysis & Interpretation
Evaluating field and laboratory results to determine soil classification, strength, stability, settlement characteristics, and bearing capacity.
Our in-house Geotechnical Investigation capabilities include:
- Drilling Exploratory Boreholes through Soil and Rock to 150 m depth using our fleet of 50+ mechanised and hydraulic drilling rigs
- Standard Penetration Test (SPT) using automatic trip hammer system
- SPT energy measurement using PDI-manufactured SPT analyzer
- Undisturbed soil sampling using Shelby tubes, Mazier sampler, Piston sampler
- Static Cone Penetration Test (SCPT) using mechanical cone
- Electric Cone Penetration Test with pore pressure measurements (eCPTu) using piezocone imported from Geomil, Netherlands
- Pressuremeter Test (PMT) using Menard pressuremeter equipment
- Static and Cyclic Plate Load Test (PLT)
- Footing load test using our own, customized load frame arrangement
- Field Vane Shear test (VST) for in-situ characterization of soft clays
- Dynamic Cone Penetration Test (DCPT)
- Dynamic Cone Penetration Test (DCP) using TRL Method
- Field CBR test
- Single and Double Packer Field Permeability Test
- Electrical Resistivity Test (ERT) using DDR-3 and Megger equipment
- Thermal Resistivity Test (TRT)
- Full-scale pump-out tests for design of dewatering systems
- Block Vibration Test (BVT)
- Down-Hole Seismic test (DHST) / Cross-Hole Seismic test (CHST) using customized equipment.