Deep Excavation and Retaining Systems


In many industrialized regions, rapid urbanization and limited land availability continue to drive real estate prices upward. Consequently, even areas with challenging soil conditions and low bearing capacity have become attractive for development.

At TOPROCK, our soil remediation solutions make construction possible and safe in such environments. Through techniques such as soil compaction, heavy tamping, and wick drain installation, we enhance ground stability, improve load distribution, and ensure balanced support for inclined surfaces.

Since 2013, we have further strengthened our capabilities by incorporating stone column technology, allowing us to deliver reliable and efficient ground improvement systems tailored to each project’s geotechnical conditions.

Deep Excavation and Retaining Systems Projects

TOBB Student Guest House Projects

The TOBB Student Guest House Project in Ankara showcases TOPROCK’s expertise in deep foundation and anchorage systems.
The project included 65 bored piles and 4,468 meters of prestressed ground anchorage, ensuring long-term structural stability on challenging urban terrain.


Delivered with precision engineering and advanced geotechnical techniques, this project stands as a strong example of TOPROCK’s commitment to quality and reliability in infrastructure development.

ANKARA,TURKEY - 2009
ANKARA,TURKEY - 2012

Oran Residence and Shopping Mall Project

The Oran Residence and Shopping Mall Project demonstrates TOPROCK’s advanced expertise in deep foundation and anchorage systems for large-scale mixed-use developments.
The project scope included 80 bored piles (18,950 m) and 100 prestressed ground anchors (101,000 m), ensuring superior structural stability and safety in a dense urban setting.

This project highlights TOPROCK’s precision engineering and ability to deliver secure, high-capacity excavation works that support both commercial and residential superstructures.

Akgul Plaza Construction Project

The Akgül Plaza Project involved 65 bored piles (2,000 m) and prestressed ground anchorage totaling 101,000 m, executed to reinforce a complex urban foundation system.


By implementing geotechnical excellence and controlled excavation techniques, TOPROCK ensured long-term soil stability and structural reliability throughout the entire construction process.

ANKARA,TURKEY - 2010
ANKARA,TURKEY - 2013

One Tower Retaining/Sub-Foundation Bored Pile

The One Tower Project in Ankara is one of TOPROCK’s flagship geotechnical works, featuring 80 bored piles (18,950 m) and 115,000 m of prestressed anchorage for sub-foundation and retaining systems.


The project required high-precision engineering due to complex soil conditions, showcasing TOPROCK’s excellence in deep excavation, foundation reinforcement, and structural stability for high-rise developments.

Kosgeb Additional Service Building Project

The KOSGEB Additional Service Building Project involved 100 bored piles (15,000 m), 3,500 m of prestressed ground anchorage, and 1,500 m of jet grouting.


Executed with strict quality and safety standards, this project reflects TOPROCK’s ability to deliver reliable substructure systems for institutional and government facilities across Turkey.

ANKARA,TURKEY - 2014
ANKARA,TURKEY - 2010

Ankara University Inpatient Children Hospital

This project involved 65 bored piles (2,004 m) and 2,361 m of prestressed ground anchorage, designed to strengthen the hospital’s new inpatient facility foundations.


Through precise geotechnical engineering and controlled excavation, TOPROCK ensured maximum safety and stability within the hospital’s dense urban setting.

Business Center Retaining Piles Manufacture

The Business Center Project included 30 mini piles (3,000 m) and 6,100 m of prestressed temporary ground anchorage for advanced slope and foundation stabilization.


Delivered with high-precision pile manufacturing and structural reliability, this project showcases TOPROCK’s expertise in urban excavation and temporary support systems.

ANKARA,TURKEY - 2010
ANKARA,TURKEY - 2010

Celal Bayar Boulevard Bridge Crossing

The Celal Bayar Bridge Project required 100 and 120 intersecting bored piles (11,500 m) to support a major traffic and bridge infrastructure system.

Using advanced anchoring and pile techniques, TOPROCK provided long-term soil reinforcement, guaranteeing durability and structural integrity for the busy city corridor.

Burcak HPP Project Intake Structure and Jet Grout Works

Located in Giresun and completed in 2011, this project involved the construction of critical foundation and ground improvement systems for a hydroelectric power plant.


The scope included 100 bored piles totaling 3,000 meters and 80 jet grout columns covering 6,000 meters, ensuring structural stability and long-term durability of the water intake system under challenging geological conditions.

GIRESUN,TURKEY - 2010