Typical applications include:

• Highways for vertical edge-of-carriageway drains to intercept lateral flow of ground water, reducing excavation and backfill quantities, and improving installation time.
• Used in retaining walls and bridge abutments to reduce pore water pressure and avoid backfill saturation.
• Suitable for engineered landfills requiring long-term chemical resistance and high compressive strength.
• Tunnels for ground-water-seepage interception between rock face and tunnel lining.
• Buried structures such as basements, culverts, car parks, and reservoirs.

Extruded high density polyethylene (HDPE) net drainage core with a nonwoven polypropylene (PP) geotextile filter/separator bonded to one or both sides.

Features and benefits:

• Manufactured using Terram T1000LE, a geotextile filter developed specifically for use in drainage geocomposites for its high tensile modulus and ability to prevent soil ingress into the void space of the drainage core.
• Terram drainage cores are manufactured from HDPE nets which have been engineered to have good flow under high loading.
• Robust to survive installation and service life.
• Stable under load to resist deformation that could ultimately restrict flow.
• Good chemical resistance.
• High-volume flow paths for liquids and gases.
• Lightweight and easy to handle, making for easy installation, particularly against vertical faces such as bridge abutment.