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Doha Metro, Gold Line – Al Sadd C-Ring Station

Doha Metro, Gold Line – Al Sadd C-Ring Station

The Doha Metro is a rapid transportation system, designed as an integral component to the larger Qatar rail network. This country wide mega-scale infrastructural project consists of 300km of rail and 100 stations. The rail network to reduce traffic congestion, and to connect the people of Qatar with the rest of the GCC region. At the city scale, currently under construction, the metro is projected to be operational by the end of 2019. It will serve Doha and its surrounding suburbs with stations located in all major nodes of the metropolis. Doha Metro will be operating both at grade and below grade, with the majority of the metro project being underground. Complex tunneling and soil retaining solutions by Dextra were utilized in the construction of this project.

Glass Fiber Reinforced Polymers (GFRP) as Tie-back anchors to retain soil

To eliminate concerns of encroachment, and obstacle for future construction projects, the Diaphragm Wall (D-Wall) at Al Sadd C-Ring Station were post-tensioned anchored with ASTEC Active Active Anchor. These high performance, fully cut-able GFRP anchors were chosen by ALSYJ JV contractors and the D-Wall anchors of choice. This innovative solution was chosen because it can be cut by Tunnel Boring Machines (TBM) or standard excavation equipment, it also doesn’t need to be removed from the ground even in temporary applications. For Al Sadd C-Ring Station 7,113 strands for GFRP rebars were used to make approximately 700 ground retaining anchors used in the D-WALL around that station.

Related Solutions


At every moment of your customer journey, Dextra teams dedicate themselves to the production of smart construction solutions that allow our customers to reach higher productivity and safety levels on their construction sites.

Dextra holds physical stocks on several continents, complemented in each country by the local inventories of our distributors. With this extended network, Dextra makes sure our products are always at reach no matter where our partners are.

For solutions that require to be customized, Dextra can also go beyond our standard delivery times and offer accelerated delivery schemes. Consult us for more information.

From 3 major industrial sites located in Bangkok (Thailand), Guangzhou (China), and Pune (India), Dextra completely owns its manufacturing facilities and processes. This allows us to have complete control over the timing of our operations and the quality of the solutions produced.

An independently accredited material testing laboratory, accredited to ISO-IEC17025, is located at Dextra’s main Bangkok factory, allowing the testing of material and products.

Dextra aims to supply products that exceed the most demanding international technical approvals and it is our goal to create maximum customer satisfaction by complying with our clients’ needs and specified requirements.

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