Operating in the engineering and construction sectors, Ertan Earth Sciences offers multidisciplinary solutions to various industries through its technical expertise, strong team structure, and modern equipment infrastructure. The company particularly stands out in the fields of earth sciences, geotechnical investigations, and infrastructure/superstructure engineering.
With its specialization in soil and rock mechanics, Ertan Yer Bilimleri has earned a respected reputation in the region. Core engineering services such as geotechnical drilling, soil surveys, and field-laboratory analyses are carried out in accordance with regional standards. Embracing reliability, transparency, and scientific accuracy in all its operations, Ertan Yer Bilimleri provides a comprehensive range of services—starting from pre-construction risk assessments to ensuring structural safety.
Backed by institutional experience and technical capacity, Ertan Yer Bilimleri continues to be a reliable partner for both public and private sector projects.
What Is Geotechnical Drilling?
Geotechnical drilling refers to the process of drilling into the ground to gather detailed technical information about the soil or rock formations at a construction or research site. This method helps determine the nature of the subsurface and forms the foundation for all types of engineering design and safety planning.
The process is carried out by experienced professionals using specialized drilling machines and appropriate equipment. Each type of soil requires a uniquely planned drilling approach. The collected data is compiled into technical reports and submitted to project teams for accurate and efficient planning of new construction projects.
How Is Geotechnical Drilling Performed?
Geotechnical drilling is conducted in a number and depth sufficient to represent the engineering characteristics of the site’s subsoil. The drilling is performed using soil drilling rigs equipped for field use, and the method is selected based on professional soil assessments.
During drilling, samples of soil (e.g., SPT, UD) and rock (e.g., core samples) are taken from the required depths. These samples are carefully preserved and sent to the lab for testing without being altered.
Laboratory tests typically analyze:
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Soil type and composition (gravel, silt-clay, sand percentages)
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Grain size (sieve analysis)
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Atterberg limits (liquid and plastic limits, plasticity index)
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Shear strength (triaxial and direct shear tests)
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Moisture content and unit weight (natural, dry, and saturated)
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Rock characteristics (petrography, uniaxial compressive strength, point load index)
Additional in-situ tests such as:
...may be applied depending on the project requirements.
Advanced tests such as:
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Plate load test,
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CBR (California Bearing Ratio),
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Swelling potential,
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Proctor compaction test,
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Permeability test,
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Inclinometer measurements,
...are also used for a more detailed assessment when required.
All data obtained is interpreted by engineers to determine whether the ground is suitable for the planned project and to define any required ground improvement methods or recommendations.
What Are the Use Areas?
Geotechnical drilling is often the first step in any construction or research project, forming the backbone of structural planning. It provides essential insights into the site's subsurface, guiding engineers in safe and reliable project design. It is carried out according to strict national standards and official technical specifications, ensuring high levels of safety and accuracy for both the construction site and its surroundings.
What Are the Working Standards?
Ertan Yer Bilimleri is among the few companies in Turkey offering geotechnical drilling services at international standards. Based in Niğde and active throughout the country, the company uses state-of-the-art drilling machinery and a specialized team to deliver high-quality subsurface investigations.
All services are carried out in compliance with the following standards:
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Ministry of Environment and Urbanization Soil and Foundation Investigation Guidelines
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DSI (State Hydraulic Works) Geotechnical Survey Specifications
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DSI Foundation Drilling and Grouting Technical Specifications
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Highway Technical Specifications
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Iller Bank Ground Survey Technical Specifications
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And other officially accepted regulations.
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