Dextra Group | Reliable Connections

Grand Paris Express – Line 16-18, France

 

Grand Paris Express – Line 16-18, France

 

Dextra has proudly supplied its high-performance Fortec rebar couplers and Sonitec crosshole sonic logging (CSL) tubes for the construction of the Grand Paris Express Lines 16 and 18 in France, one of Europe’s most ambitious infrastructure projects. This metro expansion aims to improve connectivity between suburban areas and the city center, providing a more efficient transportation network for millions of commuters.

Dextra’s Fortec couplers were used for reliable and durable rebar connections, ensuring the structural integrity of the extensive underground tunnels and stations. In addition, the Sonitec CSL tubes were supplied for concrete pile integrity testing, which is essential for assessing the quality of deep foundations. These innovative solutions have played a crucial role in ensuring the project meets high safety and performance standards, underscoring Dextra’s commitment to delivering top-quality materials for large-scale infrastructure developments.

With the Grand Paris Express set to transform the city’s transportation landscape, Dextra’s involvement highlights its role in shaping resilient and sustainable urban infrastructure.

Bartec/Fortec Bridging CAD/BIM Tools Available

Bartec/Fortec Bridging Coupler is now available on AutoCAD, Revit, and Tekla for all your construction design and detailing needs!

Ideal for connecting bars that can’t be brought butt-to-butt—perfect for complex prefabricated cages—our Bridging Coupler simplifies rebar connections, helping you streamline your projects.

Start integrating it into your designs today!

📥 Download now:

Central Kowloon Route (CKR) – Central Tunnel, Hong Kong

 

Central Kowloon Route (CKR) – Central Tunnel, Hong Kong

 
 

Dextra played a pivotal role in the construction of the Central Kowloon Route (CKR) – Central Tunnel project in Hong Kong by supplying Fortec+ couplers, along with steel rock bolts, expandable friction bolts, umbrella pipes, and post-tensioning bars for tunneling works. These mechanical rebar couplers were integral in ensuring strong and reliable connections within the road tunnel structure, meeting the stringent requirements for safety and durability.

The CKR, a major infrastructure project aimed at improving traffic flow across Kowloon, required advanced construction techniques. Dextra’s Fortec+ couplers, used in locations such as precast panels, tunnel access points, and driveways, contributed significantly to the project’s structural integrity and long-term performance. The Fortec+ system includes a rebar preparation process in which the threaded bar end is proof tested with a tensile load, ensuring non-destructive testing within the elastic zone of the reinforcing bar.

 

Image credit: Central Kowloon Route – Highways Department

Fortec+ Hong Kong Buildings Department Approved!

Dextra, the leading provider of construction solutions, has received official approval for Fortec+ from the Buildings Department (BD) of the Government of Hong Kong. This approval marks a significant milestone not only for Dextra but also for the entire construction sector in the region.

The approval granted by the BD signifies the endorsement of Fortec+’s cutting-edge parallel thread mechanical splice system. This innovative solution has been proven to offer unprecedented efficiency, reliability, and safety in structural projects.

As the regulatory authority responsible for overseeing building construction and safety standards in Hong Kong, the BD’s endorsement serves as a testament to the reliability and compliance of Fortec+’s technology with local regulations and industry best practices.

“Bar Break” splicing system

Fortec+ is a complete tensile splice system, ensuring bar-break performance of up to 800MPa under tensile load.

 

Compliant with Hong Kong standards

Fortec+ meets the Buildings Department’s Code of Practice for Structural Use of Concrete 2013 and is listed on the Central Data Bank List of Building Materials.

 

Reliable solution

The Plus (+) entails additional testing of proof load, ensuring the most reliable connections through a single set of thread preparation equipment.

 

Technical support

Our team in Hong Kong are available to accompany you through each step of the design process using readily available CAD/BIM tools and during onsite installation.

Trusted by Various Iconic Projects Across Hong Kong!

Penny’s Bay and Kai Tak Community Isolation Facility

Central Kowloon Route – Central Tunnel

Trunk Road T2

Tseung Kwan O – Lam Tin Tunnel

Grand Paris Express – Line 14

Grand Paris Express – Line 14

The Grand Paris Express is a major urban transport project taking place throughout the French capital. The project will add four new lines (lines 15, 16, 17, and 18) and extend two existing lines (11 and 14).

Dextra has been involved in several station packages through its local distributor partners. On line 14 in particular, Dextra supplied Fortec rebar couplers in the stations of Orsay and Pont Cardinet.

For Bagneux Station in the north of Paris, located at the intersection of metro line 4 and the future line 15, Dextra supplied its ASTEC Active Anchors.

ASTEC Active Anchors are the preferred solution for subway station works as tunnel boring machines and earth-moving equipment can simply cut the FRP tendons of the anchors at any stage, eliminating the need for unreliable and costly anchor removal. The solution was approved for this project by the consulting firm SYSTRA.

Following numerous successful projects in the Middle East, this was the first time ASTEC Active Anchors (a recent Dextra innovation) were installed in Europe.

Orhideea Towers, Romania

Orhideea Towers, Romania

Orhideea Towers is a double-tower office complex located in the western part of Bucharest. The towers stand 85 meters (17 floors) and 64 meters (13 floors) tall, respectively, and are connected by a sky bridge.

For this project, Dextra supplied its Fortec rebar coupler solution. The Fortec system consists of a standard rebar coupler, used for both standard and positional applications, connected to two rebar ends that have been enlarged and threaded. Fortec is particularly suitable for seismic environments, making it ideal for buildings in the Bucharest area.

Fortec couplers were used for all reinforcement connections in the heavily reinforced foundation mat (1.5 meters thick). Their compact design eliminates the need for overlapping rebar in congested areas, simplifying installation.

Additionally, Fortec couplers facilitated temporary openings, allowing workers and equipment to move through the reinforcement. Before casting, continuation bars were simply connected to the couplers, closing the temporary openings.

Trinity Tower La Défense, France

Trinity Tower La Défense

The Trinity Tower, located in the business district of La Défense, west of Paris, is a new 33-floor, 140-meter-high office tower that will feature over 52,000 square meters of office space.

The project aims to create both social and environmental impact by adding large outdoor public spaces that reconnect areas previously separated by roads. It will also feature green spaces, a rooftop area, and open facades, and it will achieve LEED certification.

For this project, Dextra supplied over 18,000 Fortec rebar connections through its French distributor, SNAAM Vernon.

Rebar couplers help accelerate construction by providing a fast and safe way to connect rebars—whether one bar at a time, in bundles, or as preassembled cages. Bundles and cages can be assembled off-site and simply reconnected using couplers upon arrival at their final location.

For more information about the availability of rebar splicing solutions in France, please contact our Paris office.