BUILDING CONSTRUCTION DRAINTUBE FTB

Elevated or perched groundwater conditions can create significant disruption and structural damage, such as slab heave due to the build-up of hydrostatic uplift pressures below the slab. A passive (gravity) or active (pumping) sub-slab drainage system must therefore be considered to drain the groundwater.

DRAINTUBE^® FTB geocomposite is designed to drain water from the subgrade, under the concrete slab, replacing the drainage layer traditionally made of granular material + collector drains. It has a high and stable drainage capacity over time, even under heavy loads.

DRAINTUBE^® FTB sub-slab drainage system can operate under a permanent water head, i.e. constantly in the water table. The geocomposite is connected to one or more drainage trenches and to a main drain (gravity or sump).

The polyethylene geofilm needle-punched to the DRAINTUBE^® FTB allows the concrete slab to be poured directly on the geocomposite, without the risk of clogging by fresh concrete.

• Efficient Drainage and Filtration even under high loads
• Proven efficiency, even constantly in the water table
• Reduction of the required excavation
• Reduction of the social footprint (less truck traffic, less neighborhood disturbance)
• Reduction of the construction time
• Easy installation with a single product to unroll
• Cost-effective and environmentally friendly solution as it replaces granular layers

• Multi-linear drainage geocomposite (ASTM D4439)
• Needle-punched polyethylene geofilm
• Perforated mini-pipes made of polypropylene
• 3 diameters of perforated mini-pipes: 16 mm, 20 mm and 25 mm
• 4 spacing options between the mini-pipes: 2 m, 1 m, 1/2 m and 1/4 m (80’’, 40’’, 20’’, 10’’)
• Standard roll size: 3.98 m x 75 m (13.1’ x 246’)