The Cairo Metro is the rapid transit system in Greater Cairo, Egypt. It was the first of three full-fledged metro systems built in Africa, as well as the first in the Arab world. It began service in 1987 as Line 1 between Helwan and Ramsis Square, covering a distance of 29 kilometers.

The Cairo Metro currently has 74 stations, 3 of which are transfer stations, with a total length of 89.4 kilometers as of August 2020. There are three operating lines in the system, numbered from 1 to 3.

The new Line 4 will run from Makram Ebeid Station to Police Academy Station near the Ring Road, with bored tunnels following Doctor Hassan El-Sherif Street and Ahmed El-Zomor Street. It will be 24 kilometers long in total. Construction began in Q3 2019 and is expected to be completed in 2024.

Dextra has supplied 450,000 Bartec+ couplers and 42 GFRP soft-eyes for the reinforcement of the diaphragm walls.

Bartec+ is a mechanical splicing system with parallel threads for connecting concrete reinforcement bars with diameters ranging from 12 to 50 mm (ASTM #4 to #18). Its threaded bar end is tensile tested at 90% of the rebar yield strength.

Dextra’s GFRP soft-eye is an integrated turn-key solution that uses cut-able Glass Fiber Reinforced Polymer (GFRP) reinforcement as an alternative to traditional steel rebars, allowing the penetration of Tunnel Boring Machines (TBM) to pass through diaphragm walls with ease.

The Lucknow Metro project is built to serve growing population of Uttar Pradesh, North India, as well as to serve the areas that are not connected by the existing rail system. The 35-kilometer rail system comprises 22 stations, of which 19 will be elevated.
The first phase of the project consists in construction of 2 rail lines (North- South and East-West corridor), connecting four corners of Lucknow by running through the heart of the city. Being implemented by Lucknow Metro Rail Corporation (LMRC), the Phase 1 comprises the construction of 22.88-kilometer long North-South corridor. The priority section is 8.5 kilometers, linking Transport Nagar to Charbagh.
Once operational, the Lucknow Metro will help ease the traffic in the city, and will also reduce commuters’ travel time.

The 37km-long Light Rail Transit Line 3 (LRT3) is a light rail line under development in Malaysia. It includes a 35km viaduct and a 2km underground tunnel and it will link Bandar Utama with Johan Setia in Klang.

Developed in line with the Greater Kuala Lumpur/Klang Valley (GKL/KV) Land Public Transport Masterplan, LRT3 will play a strategic part in extending rail connectivity to the Western Corridor of GKL/KV.

Dextra provided cuttable Glass Fiber Reinforced Polymer (GFRP) soft-eye solutions installed in diaphragm walls of escape shafts, in order to facilitate the underground tunnel breakthrough by Tunnel Boring Machines (TBM).

The LRT3 project is expected to serve 2-million people across the alignment by improving connectivity, alleviating traffic congestion and stimulating economic growth along the Western Corridor of Klang Valley, from Klang to Petaling Jaya.

The construction is scheduled for completion by February 2024.

La ligne 3 du métro de Panama est une ligne de monorail longue de 34 km en cours de développement dans le cadre du projet de métro de Panama. Il s'agira du plus grand projet du pays depuis l'agrandissement du canal de Panama.

La ligne établira une connexion entre la province de Panama Oeste et la province de Panama, réduisant de moitié le temps de trajet moyen, de 90 minutes à 45 minutes. Le système de monorail sera le premier à utiliser la technologie japonaise dans les Amériques.

Dextra a fourni 260 000 coupleurs Bartec pour la connexion des colonnes de pieux et des poutres préfabriquées de la structure monorail surélevée.

Des tubes Sonitec ont également été utilisés pour examiner l’intégrité structurelle du béton à l’aide de la méthode de test de diagraphie sonique crosshole.

La ligne, dont la mise en service est prévue mi-2025, bénéficiera à plus de 500 000 habitants de la province de Panama Oeste.

Crédit image : Chaîne YouTube de la Línea 3 del Metro de Panamá, www.elmetrodepanama.com

Le métro de Lima est un système de transport en commun rapide au Pérou, reliant actuellement le quartier de Villa El Salvador, au sud de Lima, à San Juan de Lurigancho, au nord-est de la ville. La ligne 1 du métro a commencé ses opérations en 2011 avec 26 stations, totalisant 34,6 kilomètres, la plus longue ligne de métro des Amériques.

Dextra participe à la construction de la ligne 2 du métro et à la première tranche de la ligne 4 qui ont débuté simultanément en 2016. La ligne 2 est une ligne souterraine de 27 km, reliant le quartier d'Ate (Lima) et la région de Callao attenante à la capitale. La ligne 4 est un tronçon de 8 km qui reliera la ligne 2 à la station de l'aéroport international Jorge Chávez.

Plus de 160 000 coupleurs de barres d'armature Rolltec ont été fournis sur le chantier de construction de Metro pour éviter l'encombrement des barres d'armature dû à la méthode traditionnelle de chevauchement.

Plusieurs types de coupleurs Rolltec ont été installés dans diverses parties des structures des stations, notamment les coupleurs standards de taille #8, #11 et #14, et les coupleurs de transition de taille #8 et #11.

La ligne complète sera opérationnelle en 2024.

Etihad Rail is a 1,200-kilometer railway project that will be the first national freight and passenger railway network in the United Arab Emirates (UAE), connecting the seven emirates and promoting trade and social development in the Emirate and across the GCC countries.

The railway project is expected to be a sustainable alternative for freight and passenger transportation throughout the Emirate’s urban and rural areas. It is expected to carry approximately 16 million passengers and 50 million tons of cargo. It will make a significant contribution to lowering road traffic emissions.

The Etihad Rail network reaches the borders of Qatar and Saudi Arabia in the west. The western section connects to Saudi Arabia via Ghweifat, while the eastern section connects to Oman via Al Ain. The railway line connects Abu Dhabi, Sharjah, and Dubai and runs across the Emirate. Then it goes on to the northern emirates and Fujairah.

The rail network will be built in 3 stages. The first phase of the railway network, which opened in 2016, is a 266-kilometer-long western stretch between Al Ruwais and Shah. It connects Ruwais and Habshan, and then Habshan and Shah.

The second phase connects Abu Dhabi with Dubai. It is also linked to the ports of Jebel Ali, Musaffah, and Khalifa. The third phase entails connecting the northern Emirates. The second and third phases are scheduled for completion in 2024.

Dextra is currently supplying various engineered solutions for the second phase of rail network construction, which includes the construction of a 200km main line in Abu Dhabi and a 40km branch line to Khalifa port, a 78km main line in Dubai and a 20km branch line to Jebel Ali port, a 98km main line from Sharjah to Fujairah and a 29km branch line to Tawyeen, as well as associated facilities.

These solutions were delivered to the railway tunnel construction site.

Source of top image: https://filipinotimes.net/news/2019/12/19/coming-soon-rail-network-linking-dubai-fujairah-khorffakan-ports/

The Sha Tin Sewage Treatment Works Relocation project is a project to relocate the Sha Tin Sewage Treatment Works (STW) in Sha Tin, Hong Kong, which is currently located at the mouth of the Shing Mun River, to the cavern site at Nui Po Shan of A Kung Kok on the opposite bank, freeing up the existing site for uses beneficial to people’s livelihood and improving the local living environment.

The future Sha Tin Cavern STW will be the largest of its kind in Hong Kong, occupying 14 hectares of land. It will have the same treatment capacity as the current one, but will use advanced sewage treatment technology to meet local population demands and improve services for residents.

For the tunneling works, Dextra has supplied around 800 pieces of GEOTEC™ GFRP rock-bolts for the tunnel’s temporary supporting.

GEOTEC™ GFRP rock-bolts are made of cut-able glass fiber reinforced polymers, making them perfect for face bolting or any other tunneling and mining application where further excavation is required.

Source of images: https://ststwincaverns.hk/

La Circle Line (CCL) est une ligne souterraine de transport en commun rapide située à Singapour. La ligne de 35 km et 30 stations s'étend de Dhoby Ghaut et Marina Bay dans la zone centrale jusqu'à HarbourFront au sud.

Il s'agit de l'une des plus longues lignes de transport en commun rapide sans conducteur au monde.

En 2013, l'étape 6 de la Circle Line a été annoncée, une extension de 4 km pour enfin fermer le cercle du CCL en reliant la station HarbourFront à la station Marina Bay.

Trois stations supplémentaires sont en construction et devraient être opérationnelles en 2025.

Une expertise et une qualité reconnues dans les solutions de renforcement du béton étaient nécessaires pour réaliser ce projet, et les coupleurs Bartec de Dextra ont été choisis pour plusieurs parties de la structure Circle Line, y compris les barres de départ, les dalles et les joints de colonnes.

A la fin du projet, environ 200 000 coupleurs seront livrés sur site.

De plus, Dextra a fourni 3 000 m de barres d'armature en polymère renforcé de fibre de verre (GFRP), qui présentent certains avantages clés par rapport aux barres d'armature métalliques : un poids plus léger, aucun risque de corrosion et une moindre susceptibilité à la foudre.

De plus, Dextra s'est vu confier le renforcement de la structure en béton des tunnels : 8 Astec Soft-Eyes ont été utilisés pour faciliter la pénétration des tunneliers (TBM) à travers les parois moulées, grâce à leur structure innovante en PRV découpable.