King Abdullah Financial District

Posted on November 5, 2022March 14, 2024 by Sir Gwi

King Abdullah Financial District

King Abdullah Financial District (KAFD) is a multipurpose business and residential complex located in Riyadh, Saudi Arabia. The district consists of more than 50 towers and should ultimately host a working population of around 12,000 inhabitants.

Dextra Middle-East, also located in Dubai, has been involved from2009 for the supply of several building packages to Saudi Bin Ladin Group, the main contractor on the project.

Foundations piles

In order to provide vertical connection in foundation piles, Dextra supplied through its partners fabricators its popular
Bartec rebar coupler solution, the #1 rebar splicing solution in the Middle East.

As a complement to Bartec couplers, Dextra also supplied Unitec couplers, which were used for the continuation of bars protruding from the foundation piles. Unitec is a flexible solution for contractors as the bar end doesn’t need to be prepared in advance. It only requires an impact wrench and therefore it is easy to operate on remote building sites.

Raft and Columns

Bartec couplers were also used for the horizontal connection in the thick foundation rafts, and vertically in the protruding columns.

Corewall-to-beam applications

In the building superstructure, Dextra Bartec couplers were used to provide horizontal connection from the corewall, allowing to insert the second phase starter bars needed to create the beam reinforcement.

New Champlain Bridge

Posted on November 5, 2022October 2, 2024 by Sir Gwi

New Champlain Bridge

The new Champlain Bridge is a 3km long bridge spanning over the Saint Lawrence River at the South-East entrance of Montreal, in the province of Quebec (Canada). The Champlain Bridge is one of the busiest bridges in Canada and plays an important economical role for its city as it is part of the main itinerary to the United States, accessible 60-km South.

Replacement of the older Champlain bridge

The New Champlain bridge will actually replace the existing Champlain bridge, commissioned in June 1962. The structure of the older bridge started showing signs of corrosion since 1994. After several temporary solutions to ensure safety of users and keep the bridge open, a new replacement project has been in the works since 2007. For some times the two bridges will be next to each other until the older structure is completely removed, with most of its structure planned to be recycled.

A focus on corrosion resistance

As the New Champlain Bridge is designed to operate at least 125 years and handle 50 million car crossing per year. Because of the relatively corrosive environment caused by the frequent de-icing on the road, a strong focus was made on the corrosion resistance of the structure with duplex stainless steel rebar being installeed in critical areas.

For this project, Dextra suggested the use Duplex Stainless Steel Rolltec couplers and anchors. This sub-range of our popular Rolltec solution substitutes the main products of our Rolltec range, coupler and anchors, by and improved alternative duplex steel version.

The Rolltec solution is well fit for the Canadian market and approved by the Quebec Ministry of Transport. With a single operator threading equipment and 30sec cycles, it is highly productive, which is ideal for high-labor cost countries such as Canada.

More than 10,000 Stainless Rolltec couplers have been delivered for this project, used mostly in the span of the bridge. Couplers were used to splice the reinforcement on large bars, from bar diameter 35M (#11) to 55M (#18), which is actually the largest diameter in our Rolltec range.

In addition, about 10,000 Rolltec stainless steel end anchors have been delivered, for sizes up to 55M (#18). The Rolltec Headed Bars are using the same thread system as the coupler, simplifying production.

My Home GRAVA Hyderabad

Posted on November 5, 2022March 14, 2024 by Sir Gwi

My Home GRAVA Hyderabad

In the heart of Hyderabad, India, a towering testament to architectural excellence and engineering innovation is taking shape – the My Home GRAVA project. Comprising eight 43-storey towers, this mega project stands as a symbol of modern living and technological advancement in the construction industry. One of the key contributors to the success of this colossal venture is Dextra, a global leader in providing innovative solutions for the construction sector.

Optimizing Design and Construction:

My Home Construction, the visionary developer behind GRAVA, has left no stone unturned in ensuring the optimization of design and construction methodologies. From the early stages of planning, the focus has been on delivering a project that not only redefines luxury living but also sets new benchmarks for efficiency and sustainability in construction.

Dextra Couplers: A Structural Revolution:

At the core of GRAVA’s construction success is the implementation of 570,000 Groutec couplers and more than 70,000 Bartec couplers for all structural connections within the concrete frame. These couplers play a pivotal role in ensuring the structural integrity of the buildings, providing a secure and efficient connection between the precast elements.

The Groutec and Bartec couplers are known for their high-performance capabilities, making them ideal for large-scale and complex projects like GRAVA. These couplers eliminate the need for traditional lapped splicing, offering a faster and more reliable alternative for connecting and reinforcing concrete structures and precast concrete elements. This not only accelerates the construction process but also enhances the overall durability and safety of the structure.

As the My Home GRAVA project continues to rise and reshape the skyline of Hyderabad, it stands as a testament to the successful collaboration between visionary developers and innovative construction solution providers. Groutec and Bartec couplers have played a crucial role in the seamless construction of the eight 43-storey towers, contributing to the project’s efficiency, strength, and durability.

The project not only promises a luxurious living experience but also sets a new standard for construction excellence in India, with Dextra’s contribution leaving an indelible mark on its success.

Mumbai Trans Harbour Link

Posted on November 5, 2022March 20, 2024 by Sir Gwi

Mumbai Trans Harbour Link

The Mumbai Trans Harbour Link (MTHL) is a 22-km road bridge in India connecting Mumbai Metropolitan Region with its satellite city, Navi Mumbai.

The road is also known as the Sewri-Nhava Sheva Trans Harbour Link that will start in Sewri, South Mumbai, crossing the Thane Creek area through a 16.5-km bridge and will terminate at Chirle village, near Nhava Sheva.

This colossal project will contain a 6-lane highway, which will be 27 meters in width, in addition to two emergency exit lanes: with an estimate of 70,000 vehicles per day, it will drastically help to alleviate the infamous traffic congestions of the Greater Mumbai area.

More than 35 years have passed since this solution was originally envisioned, and the actual construction began only in 2018.

Once completed, it will be the longest sea bridge in India.

Dextra was involved in this project by supplying more than 30,000 Sonitec sonic tubes for the determination of the structural integrity and homogeneity of concrete within barrette piles using the CSL (Cross Sonic Logging) testing method.

With a conveniently enlarged bell-mouth that allows the seamless connection of two tubes, the Sonitec system is extremely easy to install in reinforcement cages.

Beijing CCTV Tower

Posted on November 5, 2022March 14, 2024 by Sir Gwi

Beijing CCTV Tower

CCTV Headquarter building is a landmark tower located in Central Beijing Business district. The tower is hosting the operations of China Central Television and has been since its completion in 2012 one of the architectural landmarks of the Chinese capital.

For that project, Dextra was involved in providing contractor China State Construction Engineering Corporation with an anchoring solution for the columns that will ultimately support the building “bridge” complex architecture.

The anchoring of the structure is a challenge on the CCTC building given the building’s height (234 meter) and its distinctive complex shape. Furthermore, the building is actually located in an area of seismic activity, and must therefore been built with to resist additional loads.

Dextra supplied high tensile PT bar Systems in large diameters. The Post-Tensioned system aim tolock themetallic structure located at the foot of the megacolumns, and anchor them into a heavily reinforced mat.

The large PT systems (bars and plates) came with additional corrosion protection accessories (tubes and injection ports), allowing for grout sealing.

Valenciennes Bowstring

Posted on November 5, 2022March 14, 2024 by Sir Gwi

Valenciennes Bowstring

The Valenciennes Bowstring is a 2-kilometer bridge construction project that will connect the Saint-Saulve roundabout with the Bruay-sur-l’Escaut roundabout (North). It features a 76-metre-long bowstring bridge, a double-girder engineering structure, a pedestrian footbridge, and a wildlife passage.

Dextra supplied a tension rod system as a hanger for the bowstring arch bridge on the bypass, in collaboration with its local partner Freyssinet, to assure the structure’s stability.

The tension rod system is not only trusted for its high performance, but it also comes with different parameters such as design load, surface finish, and corrosion resistance, to fit all project technical and aesthetic requirements.

Jumeirah Beach Residence

Posted on November 5, 2022March 14, 2024 by Sir Gwi

Jumeirah Beach Residence

Jumeirah Beach Residence is a long waterfront residential complex located along the Persian Gulf in the marina of Dubai, United Arab Emirates.

The residential area comprises more 40 towers, many of them reaching the 40 floors mark. In total, the Jumeirah Beach Residence can host more than 15,000 people.

Dextra Middle-East, also located in Dubai, has been involved between 2003 and 2005 on numerous tower packages.

Foundations piles

As a complement to couplers, more than 70,000 meters of Sonitec tubes were also supplied to the piling contractor to offer a practical and safe way to assemble sonic tubes, boosting productivity.

Raft and Columns

Bartec couplers were also used for the horizontal connection in the thick foundation rafts, and vertically in the protruding columns.

Corewall-to-beam applications

In the superstructure itself, Dextra couplers were used as horizontal connection points between the corewall and the beams.

For that application, couplers are cast in the corewall flush with the formwork. A thread protection cap supplied by Dextra protects the concrete from leaking in the
Bartec coupler.

At a later stage, continuation rebar, previously prepared with
Bartec threads, are connected into the pending couplers to create starter bars.

Pelješac Bridge

Posted on November 5, 2022March 14, 2024 by Sir Gwi

Pelješac Bridge

The Pelješac Bridge construction aimed to connect the mainland to the Pelješac Peninsula, replacing the need for ferry services and significantly reducing travel time between these regions. Dextra’s Fortec couplers played a pivotal role in connecting the pile reinforcement cages, ensuring the bridge’s structural stability.

The 85,000 Fortec couplers, in sizes ranging from 16-50 mm, and in Types A, B, and C, were used in the construction of the Pelješac Bridge to securely connecting the pile reinforcement cages and ensuring the long-term stability and safety of such a critical piece of infrastructure.

Cebu-Cordova Link Expressway (CCLEX), colossal bridge in the Philippines

Posted on November 5, 2022March 14, 2024 by Sir Gwi

Cebu-Cordova Link Expressway (CCLEX), colossal bridge in the Philippines

Cebu – Cordova Link Expressway is one of the biggest infrastructure projects being undertaken in the Philippines. The project features a combination of a causeway, a gigantic cable-stayed bridge that will cross the navigable zone of the Cebu Strait, two viaducts and four low height bridges, as well as roadways and pedestrian walkways.
The CCLEX Project aims to provide better transport facilities while reducing traffic congestion in the region, as well as to improve connectivity within Cebu City. It will also intended to support Cordova’s economic growth, as the expressway will position the City as the gateway for island tourism.
Also known as Third Mandaue – Mactan Bridge, the official ground-breaking of the toll bridge was in 2017, with the completion being scheduled for 2022.

Cable-stayed bridge to connect Cebu and Mactan Island

After its completion, the Cebu-Cordova Expressway will link Cebu mainland and Mactan Island through Cordova town. The 8.5 km-long toll bridge will feature two lanes that will serve up to 40,000 vehicles a day. The main bridge will be built with a 400 meter cable-stayed main span, with 60-meter navigation clearance, allowing ships to easily navigate through the expressway.
The main bridge of the expressway will connect Guadalupe River to the Shell Island in Cordova, while its colossal viaducts will link it to the causeway and road networks to Mactan.

Dextra Bartec, reinforcing solutions for the construction of Cebu-Cordova Bridge

The design and the construction of this megaproject is undertaken by the Cebu Link Joint Venture (CLJV). The CLJV is a joint-venture partnership between the Spain-based Acciona Construccion S.A. and the Philippines-based First Balfour Inc. and D.M. Consunji Inc.
For the reinforcement of the colossal expressway’s foundations, the contractor has chosen Dextra’s well-known rebar splicing solution Bartec. More than 35,000 units of Standard, Bridging, as well as Transition splices of steel grade 75, both in diameter 40 and 50, have been applied to the foundations’ piling cages as of July 2018. Moreover, to provide better end anchorages in congested areas, the CLJV opted for Dextra Bartec headed bars, which are also known as end anchors. Bartec end anchors are a convenient alternative to hooked bars, traditionally used for anchoring.

For more information about rebar coupler availability in Philippines, please contact our Bangkok office.

Photo credit: https://cclex.com.ph/updates/

West Gate Tunnel

Posted on November 5, 2022March 16, 2024 by Sir Gwi

West Gate Tunnel

The West Gate Tunnel Project will deliver a vital alternative to the West Gate Bridge, providing a much needed second river crossing, quicker and safer journeys, and remove thousands of trucks from residential streets.

The project will link the West Gate Freeway at Yarraville to the Port of Melbourne and CityLink at the Docklands via twin tunnels beneath Yarraville and an elevated Footscray Road.

The elevated road includes 300 piles of variable height. The piles have been precast in multiple segments, close to the site. Vertical post-tensioning bars assembly together all the segments of each pile.

This construction method of piles is more and more common but requires an impeccable preparation, both in terms of method statement and products definition. Each detail is fundamental for the success of the installation.

Dextra supplied Freyssinet with more than 1,000 tons of Freyssibar+ systems, grade 930/1080 MPa, with nominal diameters of 72mm and 55mm, and 7,500 anchorages for vertical permanent application.

With a close cooperation between DEXTRA, Freyssinet back-office (Technical Department and Freyssinet products company) and the job site staff (Freyssinet Major Project and Freyssinet Australia), the post-tensioning system has been perfectly adapted to the needs of the project.

The bar diameters, steel grade and the design of the anchorages have been validated through qualification tests according to Australian Standards, demonstrating the performance of the system.

This bar system can be used for post tensioning, prestressed ground anchors and any application involving temporary or permanent tie-rods, lifting, suspension, prestressed splices, etc.

Major project construction started in January 2018.

Category: Projects