The Bi-planar Drainage Geonet consist of two layers of heat bonded polypropylene or polyester non-woven geotextile bonded to a high strength HDPE Geonet core.

It is designed for in-plane flows over a large surface area. The Geonet core is UV stabilized with 2% Carbon Black and is chemically and biologically resistant. Available in 2m and 4m wide rolls with a 10cm fabric overlap, each batch is tested and quality certified.

The Bi-planar Drainage Geonets provide drainage, filtration, separation and protection in the one product. The geotextile cover provides rapid drainage and prevents soil particles blocking the drainage core. When using Drainage Geonets the most critical engineering property is the in-plane flow capacity under design loads and site-specific boundary conditions. Bi-planar Drainage Geonets can be used for landfill cappings, new landfills, water reservoirs; horizontal drainage in embankments, roads and railways; behind retaining walls, foundations, basements; cut and cover tunnels; gardens and sports fields.

Applications
The light-weight and flexible Geonets are easy to handle and install and offer long term durability. Available in a range of sizes, Geotex’s Bi-planar Drainage Geonets can be used:
• For projects where the foundation reasonable or the bearing capability demand is low, such as parks, temporary roads, banks and slopes;
• In place of soil drains in civil and environmental applications such as under-slab drainage, gas venting and leachate collection;
• As a surface water removal layer in landfill final covers;
• As a leak detection layer between two barrier layers;
• To replace traditional aggregate drains especially on very steep slopes or vertical walls.
• For above ground gardens and water harvesting under sports fields.

Download the Drainage Geonet for full information.