Who Are We?

Zetaş is the Geotechnical Engineering market leader in Turkey with its constant and healthy growth target.

Zetaş has founded in 1988 and provides a fully integrated chain of services including contracting, design, soil investigation, consultancy, monitoring and special machinery manufacturing both in Turkey and abroad. In 2011 it joined in the Soletanche Bachy group, became a member of VINCI Construction family.

Zetaş Zemin Teknolojisi A.Ş.

ADP Project, Astana, Kazakhstan

Solution Provider

We provide solutions considering the particular requirements of each project, while controlling cost, providing safety, ensuring the strength and integrity of the system.

Our team’s expertise and dedication guarantee sustained high quality of services with advanced technologies in foundation engineering.

ZETAŞ follows the world developments to raise the engineering quality of foundation technology applications in all countries it is involved to meet or exceed international standards.



Establishment of ZETAŞ. The foundation of the company was first laid by Dr. H. Turan Durgunoglu and his students H. Fatih Kulaç, Turhan Karadayılar in Balmumcu Office and with the participation of Selim İkiz and S. Özkan Kasımoğulları in the following years.

Founders of ZETAŞ

Hilmi Turan Durgunoğlu

Prof. Dr. H. Turan Durgunoğlu

Fatih Kulac

H. Fatih Kulaç

Turan Karadayilar

Turhan Karadayılar

Selim İkiz

Selim İkiz

S. Özkan Kasımoğulları

S. Özkan Kasımoğulları

İlk Projeler-2


One of the first projects: Konya Alaeddin Mosque

The use of CPT equipment in a comprehensive project for the first time in Turkey. ZETAŞ has made history as the first company in the private sector to use this device in Turkey.


Expanding to the application area with the first drill machine in the company.

The first permanent soil nail – passive anchor shoring application in Turkey, Ortaköy Otomotiv project was applied by ZETAŞ (1994)

The first Jet Grout application in Turkey suitable with its international technique was implemented by ZETAŞ in Trakya Cam Factory project (1997)

Trakya Cam


First staying for a few years in the Bağlarbaşı Soyak office (1997) and finally moving to the Alemdağ Facilities (1999)


Establishment of the first international office in Dubai

ZETAŞ constructed the deep foundations, piles of the Rose Tower, which will be the highest hotel in the world at that time and will be in the Guinness Book of Records (2004)

Rose Tower
Z Makina


Establishment of the Z Makina

Then moved to its factory located on an area of 5000 square meters in Kocaeli Dilovası (2016).


Fenerbahçe Ülker Sports Hall project

The first barrette foundation application in Turkey

Ulker Arena İlk Baret


Establishment of International Offices and Subsidiaries

2006 – ZETAS ATS Foundation Technologies is founded in Abu Dhabi

2007 – Zemin Teknolojisi Uluslararası A.Ş. is founded

2007 – TOO Zemin Foundation Technology is established in Kazakhstan

2008 – ZETAS QATAR W.L.L. Foundation Technology is established in Qatar

2009 – ZETAŞ AGT Mehdud Mesuliyyetli Cemmiyeti (MMC) is established in Azerbaijan

2009 – ZETAS ARABIA L.L.C. Foundation Technology is established in Saudi Arabia

2010 – ZETAŞ APEX Foundation Technology is established in Lebanon

2012 – Georgia Batumi office is established


Soletanche Freyssinet invested in ZETAŞ and ZETAŞ has become a member of VINCI Family

Turkmenbaşı Limanı


Turkmenbashi Port Project, PVD, RIC, DSM and bored pile works with ZETAŞ – Menard JV on 115 hectares area.


90 m long barrettes were constructed by Soletanche Bachy and ZETAŞ under Dubai Creek Tower, which will be the tallest structure in the world when completed. With 363 MN, the world’s largest O-Cell test load has been achieved.

Creek Tower OCell


A record diaphragm wall production of 250,000 square meters was signed in two years by working on many metro projects within Istanbul.


The shoring, piling and barrettes works were completed under challenging conditions in Iraq Central Bank project in Baghdad.


The first job in Eastern Europe, Warsaw C21 Metro Station Project was completed with Soletanche Polska

Jet Grout columns with a diameter of more than 3 m were successfully applied.


The largest dry dock project of the Mediterranean basin was completed within İÇDAŞ Çanakkale Facilities.


Ogan Sevim

Ogan Sevim, Chief Executive Officer

Eşref Ertun Sözen

E. Ertun Sözen, Chief Financial Officer

Numan Velioğlu

M. Numan Velioğlu, General Manager

Deniz Tenik Özkanlı

Deniz Tenik Özkanlı, Accounting Manager

Mert Maden, Operations Manager

Meksut Alev

Meksut Alev, HSE Manager

Önder Akçakal

Önder Akçakal, Technical Office Manager

Emrah Çakman

Emrah Çakman, Equipment Manager

Murat Aydın

Murat Aydın, Procurement and Logistics Manager

Semih Çuhadar, Middle East Director

Özhan Özdöl

Özhan Özdöl, UAE Construction Manager

Turgut Kaya

Turgut Kaya, Zetas ATS Business Unit Manager


Anıl Utlu, Saudi Arabia Country Manager

İnanç Kayahan

İnanç Kayahan, Dubai Branch Manager

Canberk Acar, TR Business Development Manager

Work with us


We at ZETAŞ, are able to provide our customers with top-notch design and value engineering thanks to our highly educated engineers in addition to our experience in contracting.