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Category: Projects

Pune Cricket Stadium

Posted on by Sir Gwi

Pune Cricket Stadium

The Pune Cricket Stadium is a cricket venue located near the city of Pune in the state of Maharashtra, India.

Designed by the British firm Hopkins Architects, the stadium was built between 2010 and 2011.

With a seating capacity of 37,400, the stadium offers spectacular views of the surrounding mountains.

For this project, Dextra engineered and supplied the Tension Rods suspending the roof of the building in 2012.

The long architectural bar systems are anchored to steel pylons and support the roof structure.

The Tension Rods sets were supplied in steel grade 460. Each tendon consists of several bar segments spliced together using either couplers (for fixed lengths) or turnbuckles (for length adjustment and tensioning).

In total, over 50 tons of Tension Rods anchor the roof structure of the Pune Cricket Stadium.

Xayaburi Dam

Posted on by Sir Gwi

Xayaburi Dam

The Xayaburi Dam is a hydroelectric dam located in northern Laos. Planned to begin operations in 2019/2020, it is the first of 11 dams planned in the lower Mekong region. The dam is expected to generate 1,285 MW of electrical capacity.

For this remote construction site, a Bartec rebar preparation equipment set was delivered in its container. A total of 120,000 rebar couplers were used on the project over a two-year period.

Mumbai Chhatrapati Shivaji Airport

Posted on by Sir Gwi

Mumbai Chhatrapati Shivaji Airport

Mumbai Chhatrapati Shivaji International Airport is the primary airport serving international airports to Mumbai. It is the second airport in India in term of passenger traffic.

Dextra has been involved in the construction of Terminal 2 and associated structures, which took place between 2009 and 2013.

For Mumbai Airport, Dextra delivered its popular Bartec rebar coupler solution, which is the primary rebar coupler used on large projects in India.

Dextra operates its own threading yard in Mumbai and took responsibility for the rebar preparation for this project.

On the construction site, Bartec was used extensively for vertical connections (bar-to-bar vertical column connections) as well as horizontal applications (column-to-beam), typically for reinforcement of ⌀32mm. Bartec offers an exceptional level of performance, ensuring “bar break” performance on the rebar used at Mumbai Airport.

For the contractor (Larsen & Toubro on this project), Bartec offers a simple and cost effective way of connecting rebar.

Thanks to its parallel thread technology and rebar prepared with various thread lengths, it requires the same coupler for both standard applications (when one bar can be rotated inside the coupler) and positional applications (when no bar can be rotated). This is a convenient feature that simplifies stock management and prevents product mismatches on site.

Madrid Chamartín Clara Campoamor Railway Station Expansion

Posted on by Sir Gwi

Madrid Chamartín Clara Campoamor Railway Station Expansion

The Madrid Chamartín Clara Campoamor Railway Station expansion is one of the largest infrastructure projects in Spain. The expansion project aims to increase the capacity of the railway station and improve the overall passenger experience. Dextra supplied 60,000 linear meters of Sonitec, a crosshole sonic logging (CSL) testing tube, for the piling work of the project.

Madrid Chamartín Clara Campoamor Railway Station is one of Spain’s busiest railway stations, serving more than 60 million passengers each year. The expansion project was necessary to accommodate the increasing demand for train services in the city. The project involved the construction of new platforms, tracks, and passenger facilities.

Dextra, a leading supplier of construction solutions, was chosen to supply the Sonitec crosshole sonic logging (CSL) testing tube for the piling work of the project. The Sonitec tube is a highly advanced system that enables precise and accurate measurements of pile integrity. The system employs crosshole sonic logging technology to assess pile conditions, ensuring they are strong enough to support the weight of the railway station.

Using the Sonitec crosshole sonic logging testing tube enabled the construction team to carry out the piling work with confidence and ensured the structural integrity of the piles. The system provided real-time data on pile conditions, enabling the construction team to make informed decisions and implement any necessary adjustments during the construction process.



Banner image credit: UNStudio, b720 Arquitectura and Esteyco

Jamnagar refinery expansion

Posted on by Sir Gwi

Jamnagar Refinery Expansion: The World’s Largest Refinery by Production Capacity

Located in Gujarat, western India, the Jamnagar Refinery is the largest refinery in the world by production capacity. Owned by Reliance Industries, it was commissioned in 1998 and spans a vast 50 km² area.

For Phase 3 alone, more than 305,000 tons of steel reinforcement were used in a 36-month project, involving over 100,000 engineers and construction workers.
Dextra has been involved in Jamnagar since the early phases, supplying rebar splicing solutions for Phases 1, 2, and 3 of the project.

Dextra’s Rebar Splicing Solutions for Phase 3:

Three rebar coupler solutions were used in Phase 3:

  • Bartec Solution
    Used for cast-in-situ applications, including bar-to-bar connections in foundations, pile cages, and column cages.
    Also utilized in heavily congested rafts and pile caps to facilitate efficient rebar splicing.
  • Groutec Couplers
    Applied to pipe racks, which were constructed from precast elements in a dedicated precast factory within the project.
    Positioned in the bottom elements and filled with grout, eliminating the need for in-situ wet joints and ensuring fast, secure connections between beams and columns.
  • Unitec Couplers
    Used in applications where rebar length was too short to allow traditional overlap connections.

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Olympic Velodrome

Posted on by Sir Gwi

Olympic Velodrome

The Olympic Velodrome, now renamed Lee Valley VeloPark, is a multipurpose sports facility located in East London. The facility was initially built to host the 2012 London Olympics and Paralympics. It still features road courses and BMX tracks and hosts international cycling competitions.

For this project, Dextra delivered the Griptec rebar splicing solution to contractors Sir Robert McAlpine and Byrne Construction.

The Griptec splices were mostly used to provide vertical rebar connections in the velodrome columns.

Our Griptec solution was supported by Dextra’s local distributor in London, which houses the Dextra Griptec equipment required for the extrusion of the Griptec sleeves onto the rebar.

Griptec is a CARES TA1-A, TA1-B, and TA1-C approved solution, making it suitable for even the most advanced rebar splicing applications and stringent project requirements.

Jizan Flood Mitigation Channel

Posted on by Sir Gwi

Jizan Flood Mitigation Channel

The Jizan Flood Mitigation Channel is an ongoing infrastructure project in Jizan Economic City, Saudi Arabia.

Located along the coastline, the city is at risk of flooding due to frequent torrential rainfall. The flood channel plays a crucial role in protecting downstream areas from major flood damage.

As the channel will be exposed to seawater and environmental contaminants that can accelerate steel corrosion, Dextra ASTEC glass fiber-reinforced polymer (GFRP) rebar was chosen as the ideal solution for the project. Nearly 2 million meters of GFRP rebar were supplied.

ASTEC GFRP rebar is a corrosion-free, non-metallic reinforcing bar that offers higher tensile strength than steel while being significantly lighter in weight.

Upon completion, this project will be the world’s largest construction using GFRP rebars as concrete reinforcement.

Hong Kong International Airport Terminal 2

Posted on by Sir Gwi
 

Hong Kong International Airport Terminal 2

Hong Kong International Airport (HKIA) stands as a global aviation hub, ranking among the world’s busiest airports for both cargo and passenger traffic. As part of its commitment to excellence and efficiency, the recent Terminal 2 Expansion project aimed to enhance the airport’s capacity and infrastructure. Dextra’s contribution played a pivotal role in ensuring the project’s success.

With the continuous growth in air travel and cargo shipments, HKIA recognized the need to expand and upgrade its facilities to accommodate the increasing demand. Terminal 2, a vital component of the airport’s infrastructure, became the focus of an extensive expansion project. This redevelopment aimed not only to increase passenger capacity but also to improve operational efficiency and provide a seamless experience for travelers.

Dextra, a leading provider of engineered construction products, played a crucial role in the success of the Terminal 2 Expansion project. The company supplied an impressive 200 tons of post-tensioning bars, specifically the M78 and M88 sizes, Grade 1080. These post-tensioning bars were instrumental in several key aspects of the construction process.

Connection of Jacking Towers:

The expansion project involved intricate engineering, requiring the precise connection of jacking towers to ensure the structural integrity of the new terminal. Dextra’s post-tensioning bars provided the necessary reinforcement, allowing for a secure and reliable connection between the towers.

Heavy Lifting of Roof Structure:

Terminal 2’s redevelopment included the installation of a robust and aesthetically pleasing roof structure. The weight and complexity of the roof required a sophisticated lifting mechanism. Dextra’s Grade 1080 post-tensioning bars played a key role in the heavy lifting process, ensuring that the roof structure was securely and efficiently positioned.

As HKIA continues to uphold its status as a global aviation leader, the Terminal 2 Expansion project, along with Dextra’s significant contribution, stands as a remarkable example of innovation and excellence in airport infrastructure development.

Melbourne Metro

Posted on by Sir Gwi

Melbourne Metro: five new underground stations

Melbourne’s metropolitan rail service operates 226 six-carriage trains across 998 km of tracks. The metro has 15 lines and 222 stations, serving more than 400,000 passengers a day across the city.

In 2017, the construction of a 9 km-long tunnel and five new underground stations was announced to increase capacity and expand coverage in the city’s suburban area.

Construction began in 2018. Dextra was involved in the project by supplying rebar connectors with fully automated rebar preparation equipment for the station’s structural reinforcement works.

Griptec couplers were chosen for their unrivaled performance in tension, compression, and fatigue, with 400,000 units delivered.

In addition, Dextra supplied:

  • 5,300 GFRP Astec Combination Bolts — These were used at the CBD cavern location. The 19m width of the cavern allowed for the construction of two conventional 7m tunnels, built in parallel with the middle segments secured by GFRP CB Bolts, which can be cut to widen the gallery.
  • 2,400 GFRP Geotec GR45 – 25mm dowels — Each measuring 11.8 meters, these dowels were used to secure the excavation face.
  • 900 GFRP Astec Soil Nails ST50 – 41 — These were applied to secure several stations under construction. Some of them extend beyond the project boundary since GFRP can remain in the ground and be easily cut later.
  • 16 Soft-Eyes — Installed in the D-Wall and bored pile of five stations.

Dextra provided support and shared its expertise on GFRP during the design stage, producing custom-shaped GFRP solutions to meet the owner’s expectations. Due to the cuttability of GFRP, the TBM can pass through the D-Wall in minimal time without causing damage.

The metro tunnel and its new stations are due to open in 2025 and are predicted to become a new landmark for the city.

(photo credit: Hugh Llewelyn at https://bit.ly/2S0kbAG)

Khaosiung National Stadium

Posted on by Sir Gwi

Khaosiung National Stadium

The National Stadium of Kaohsiung is a large open-air stadium located in the Zuoying District of Kaohsiung, Taiwan. It was formerly known as the World Games Stadium or Takao Stadium. This is a multi-purpose stadium and currently the largest sports facility in Taiwan in terms of capacity, with 55,000 seats.

The arena was built in 2007 in anticipation of the 2009 World Games. Its main purpose now is to host football/soccer events, although its distinctive non-circular shape also makes it a suitable venue for baseball events.

For this project, Dextra supplied carbon steel Tension Rods used as cross-bracing, incorporated into the secondary trusses of this complex steel structure, revealing the stadium’s “nest-shaped” architecture.