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SOMTUBE FTF - Drainage under railways

Utilisation

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.

SOMTUBE^® FTF limits hydraulic underpressure when the groundwater is rising and prevents water infiltration into the structure. This solution is recommended for a number of applications :

Implementation of a draining mask
Implementation of drainage in road structure
Implementation of drainage in road structure on compressible soil
Implementation of drainage at the rear of mechanically stabilised earth backfill
Implementation of drainage under railways

For drainage in road structure and under railways, SOMTUBE^® FTF replaces the traditional granular materials and geotextile filters system. It can also be used in flood-proof areas and compressible areas in addition to vertical drains.

For draining masks, SOMTUBE^® FTF helps to stop water inflows on natural slopes or embarkments. It replaces the traditional granular draining materials and geotextile filters system.

For the rear drainage of mechanically stabilised earth backfill, SOMTUBE^® FTF must be installed to discharge water at the interface between the technical embankment and the existing backfill. Depending on the structure’s construction arrangements (height of the wall, materials available, etc.) there are two possible installation methods for this product :

Installation from the bottom of the slope
Installation from the crest

Avantages

Enhance soil drainage performance
Ease of installation with a single product to unroll
Increased stability of the slope in the event of a draining mask application
Reduced movement of construction machinery on the work site
Reduction in construction and earthwork time
Material savings
Reduction of carbon footprint because the input of granular materials on site is avoided
An economical solution because the transport cost is significantly reduced