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Net Based Composites (FN/FNF)

A geonet consists of integrally connected parallel sets of ribs overlying similar sets with varying angles and thicknesses, and they are used primarily for their in-plane drainage capacity. GEOfabrics manufactures net based composites which consist of a net with a geotextile filter laminated on either one (FN) or both sides (FNF) of the net.

Structural Drainage

GEOfabrics is able to manufacture composites using both Bi-Planer and Tri-Planer Geonets.
  • Bi-Planer nets: consist of two sets on intersecting ribs with varying angles and spacing. The shape and thickness of the ribs can also be varied to meet requirements.
  • Tri-Planer nets: these have central parallel ribs with smaller sets above and below for increased stability and flow.

Net based composites can provide a cheaper and easier to install alternative to traditional drainage media.

Typical uses include:

  • Drainage behind retaining walls.
  • Drainage on slopes.
  • Drainage beneath foundations.
  • Water drainage to prevent frost heave.
  • Water drainage beneath sports fields, golf courses and other athletic facilities.

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