The Perth City Link is an transport and urban development project taking plate in Perth, Western Australia. It aims to reclaims more than 13.5 hectares of land previously used by connecting railways by sinking a train lane, hence making land available at the surface to reconnect two parts of the city with streets, commercial and residential buildings.

For this project, Dextra has been involved between 2012 and 2014 in the early foundation works:

• Supply of Dextra Rolltec mechanical rebar splicing solution, used for the vertical connection of rebar in D-Walls and Micropiles. Rebar couplers were used to reconnect cages which had been previously prefabricated by our rebar partner fabricator in Perth.
• Dextra also supplied its Sonitec sonic tubes used the Cross Sonic Logging (CSL) integrity testing of the foundations piles.

For more information about foundations solutions available in Australia, please consult our Bangkok office

Riyadh Metro is a massive urban transit system project under construction in Riyadh, Saudi Arabia. The project will feature 85 stations, built along 6 transit lines, for a total rail length of 176km. It is expected that the system will serve at least 1 million passengers daily at its inauguration in 2018.

For this large infrastructure project, Dextra has been involved on various stations and packages.

Excavation works

Before proceeding with general construction works, during early excavation phase, it is required to anchor retaining walls back into the stable ground in order to prevent any wall displacement. This will allow to keep excavating in a safe environment.

For that purpose, Dextra supplied steel ground anchors installed at the station perimeter. Each system is based on a high-tensile fully threaded bar, coming with nut and plate, and grouted to provide bonding with the soil.

For more information, please refer to Steel Ground Anchors page.

Raft & Vertical connections

Bartec rebar couplers were supplied for the works in the stations. Couplers were used for slabs, column and wall connections. A typicall application on this project is to cast rebar couplers in the concrete with reinforcement, and then proceed with second phase bar connection at a later stage.

Unitec bolted couplers can have also been use on various parts of the project. Typically Unitec is used when overlap is planned but lapping length appear to be too short to perform a safe splice. In that case Unitec provides a convenient and full performance connection.

Pune Metro is an under-construction mass rapid transit system that comprises of 3 lines with a total length of 55 km. The Metro is in Pune Metropolitan Region in Pune City, India.

Swargate Station is part of the 17-km Line 1 running from PCMC Building to Swargate. Lines 1 and 2 are expected to be operational in 2021 while the elevated Line 3 will be completed one year later.

For this project, Dextra supplied more than 1,700 steel active anchors for stabilization of vertical retaining walls around the excavation area.

Dextra’s Geotec Steel Active Anchor is the preferred solution for excavation works where post-tensioning is required.

The anchors are corrosion protected and based on high-tensile fully-threaded bars that help prevent deformation of the retained structure.

After the construction of Pune Metro UG04 is completed, the underground station at Swargate will be a strategic part of a multimodal transit hub connecting to the city bus services and parking facilities for private vehicles.