Bangkok’s MRT Orange Line is one of the planned rapid transit lines of the Mass Rapid Transit Authority of Thailand (MRTA). The main purpose of this 39.5-kilometer railway line is to improve the connection between western, central and eastern parts of Bangkok, and consequently ease the Thai capital’s traffic congestion. This project is also part of Thailand's plan to stimulate the national economy and improve the infrastructure. The MRT Orange Line is separated into two sections: from Bang Khun Non to Thailand Cultural Centre, and from Thailand Cultural Centre to Min Buri – comprising 22 underground stations and 7 elevated stations.

Dextra GFRP Soft-Eyes for tunnel construction

For the Thailand Cultural Centre – Min Buri section, the contractor Joint-Venture of Italian-Thai Development and CKST opted for more than 40 units of Dextra’s turnkey solution for tunneling FRP Soft-Eye. Being well-known for its unique cut-ability technology, Glass Fiber Reinforced Polymer (GFRP) Soft-eye facilitates break-ins and break-outs of the Tunnel Boring Machine (TBM). This is in fact the best alternative to conventional steel reinforcement – which would require mobilization of additional manpower and equipment.

Dextra Sonitec for Crosshole Sonic Logging (CSL) tests

In order to verify the integrity of concrete in deep foundations, Italian-Thai Development, CKST JV and Unique Engineering have also chosen Dextra’s cross-hole sonic logging tubes – Sonitec. These CSL tubes are available in several diameters, and have been specifically designed for easy and fast handling to accelerate construction speed. Over 30,000 tubes have been delivered to the project as of March 2022.

Complete rebar splicing solutions applied for the metro’s D-walls

To optimize the reinforcement of the Diaphragm Walls (D-Walls), Bartec, one of Dextra’s mechanical rebar splicing systems, was installed. Thanks to its easy-to-install characteristic, Bartec helps accelerate the projects schedule and reduce inventory as the standard coupler can also be used for Position splices. More than a million of Bartec couplers have been delivered to the site.

Moreover, around 7,000 headed bars were applied at the end of the reinforcement bar as an alternative to hooks in congested areas of the structure.

For more information about our solutions available in Thailand, please contact our Bangkok office.