PUBLIC WORKS SOMTUBE FTF

Water ingress in soil can damage the structures and jeopardise its durability. This is why it is important to use an appropriate and effective drainage solution. The installation of a drainage system under railways solves many problems that can be encountered.

On compressible soils, the SOMTUBE^® FTF geocomposite evacuates the water from soil consolidation. It is often used in addition to vertical drains.

In cuttings, SOMTUBE^® FTF helps to drawdown the water table and prevents groundwater from rising in the structure.

Placed between the infrastructure and the sub-ballast, SOMTUBE^® FTF collects the water infiltrated under the railways or access roads, and drains it towards the collection trenches or ditches on the sides.

Placed between the sub-ballast and the ballast, SOMTUBE^® FTF compensates for the loss of hydraulic conductivity of the ballast due to its densification and degradation over time, and increases the drainage capacity of the entire system.

• Efficient drainage and filtration of the infrastructure even under heavy loads
• Use in cuttings and compressible areas in addition to vertical drains
• Increase of the long-term drainage capacity of the ballast
• Reduction of the construction time
• Easy installation with a single product to unroll
• Cost-effective and environmentally friendly solution as it replaces granular layers

• Polypropylene geocomposite
• Roll width : 3.90 m
• Roll length : 50 m
• 3 diameters of perforated mini-drains : 16 mm, 20 mm and 25 mm
• 4 possible distances between mini-drains : 200 cm, 100 cm, 50 cm and 25 cm