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

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

Excavation Works

Before proceeding with general construction works, during the early excavation phase, retaining walls must be anchored back into stable ground to prevent any wall displacement. This will allow excavation to continue safely.

For that purpose, Dextra supplied steel ground anchors installed at the station perimeter. Each system consists of a high-tensile fully threaded bar, accompanied by a nut and plate, and grouted to bond with the soil.

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

Raft and Vertical Connections

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

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