GALEN ZEMIN

Geotechnical Drilling and Site Investigation across Türkiye

Solid ground for strong futures

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Reliable Site Investigation

Traceable field data in line with the Turkish Building Earthquake Code (TBDY 2018) and client specifications. Every metre logged, every sample labelled.

Automatic SPT and Modern Fleet

Fully hydraulic rigs with automatic SPT hammers give repeatable test results and fast mobilisation; we can run several sites at the same time.

Turnkey Geotechnical Investigation

Drilling, in-situ testing, laboratory testing and a signed geotechnical report in one package: one contact, one schedule.

23,500+

Metres Drilled

50+

Projects

Provinces Worked

Drilling Rigs

About Us

Field services anywhere in Türkiye

Good foundations start with reliable ground data.

Galen Zemin Etüdü provides geotechnical drilling and site investigation services throughout Türkiye. On railway, highway and bridge, residential and infrastructure projects we have completed more than 23,500 metres of drilling in 35 provinces .

With our own fleet (three fully hydraulic rigs and one mechanical rig) we mobilise quickly and can work on several sites simultaneously. Automatic SPT, disciplined borehole logging and a photograph of every core box make our data traceable and repeatable.

We deliver the whole process, from drilling to the signed report, as one package: borehole logs are prepared by our team, tests are carried out at our partner laboratory, and geotechnical reports are prepared and signed by our geological engineer partner.

Galen Zemin hydraulic drilling rig on site at sunset

Our Vision

To be the first-choice geotechnical field partner for infrastructure and building projects in Türkiye, trusted for the quality of its data.

Our Mission

To characterise the ground correctly on every project: standard-compliant drilling, complete in-situ testing and traceable records, delivering reliable data to our clients on time.

Our Values

Accurate data: every metre recorded
Complete scope: no specification item left out
On-time delivery: transparent work programme
Safe site: full compliance with HSE rules

Our Services

From investigation planning to the signed geotechnical report, we manage every stage on a turnkey basis.

Drilling rig set-up and rod preparation on site

01 · Planning

Investigation Planning and Site Reconnaissance

We define the number and depth of boreholes and the testing programme according to project type, structural loads and local geology, and clarify access, mobilisation and safety conditions in advance.

The required data is collected right the first time, without unnecessary metres or lost time.

ZT 250 Q5 sondaj makinesiyle SPT'li jeoteknik sondaj, saha ekibi

02 · Drilling

Geotechnical Drilling and Sampling

Boreholes with SPT (TS EN ISO 22476-3)
Rotary core drilling, with TCR and RQD records
Undisturbed (UD) sampling (TS EN ISO 22475-1)
Mineral exploration core drilling

Driller preparing an in-situ borehole test

03 · In-situ testing

In-situ Borehole Testing

Pressuremeter test (Ménard, TS EN ISO 22476-4): pressuremeter modulus and limit pressure
Packer (water pressure) test (Lugeon, TS EN ISO 22282-3): rock mass permeability
SPT: key input for TBDY 2018 site classification

04 · Laboratory

Soil and Rock Laboratory Testing

Physical and mechanical tests on soil and rock samples (TS 1900-1/2) are carried out at our partner laboratory with full chain of custody; results feed directly into our report.