Approved by IDDRIM
Drainage plays a critical role in the stability and durability of structures. To create a drainage system typically involves transporting large volumes of expensive aggregates along with a geotextile filter and collector drains. Once these supplies have been coordinated, they must be applied in several time and labour consuming operations which are often weather dependent.
teradrain® is an innovative geosynthetic product which improves, modernises and facilitates the execution of drainage mats, trench drains and drainage blankets.
The teradrain® drainage system consists of a combination of geotextiles and a network of perforated mini-drains, in ready-to-use rolls. teradrain® filters, drains, collects and removes water, representing great progress by comparison with conventional solutions.
teradrain® divides up the drainage path length, to reduce it to half the distance between two mini-drains. The well known principle of dividing a big problem into small portions therefore solves it more easily! Whereas uniform drainage sheets or layers of stone have to accumulate and convey all the drained water toward the outlet, teradrain® concentrates its draining effect between the mini-drains. The flow collected by each mini-drain is then removed separately toward a main outlet. It is this principle that accounts for the great efficiency of teradrain®.
teradrain is used in all construction work that requires drainage as a replacement or supplement to conventional drainage bases consisting of aggregates, drains and geotextiles.
Operation
The water contained in the soil is filtered by the geotextile layers at the top of the product. Once inside the geotextile sheet, the water follows the easiest path in the direction of the greatest head losses, i.e. perpendicular to the perforated mini-drains. The ingress of water into the the mini-drains is instantaneous with a maximum head loss.
A length of only 30cm is adequate to collect the maximum flow in the mini-drains!
The perforation at the bottom of the grooves are optimised and the water flows toward the outlet via the mini-drains.
