Geonet, Geomat or Composite Drainage Net? A Practical Selection Guide

The four functions of water, solids, filters and surface layer protection are to break down and solve the problem of purchasing the wrong materials, which are close to the name.

Selection guides

Procurement and Acceptance Checklists

The checkpointControl requirementsDelivery of evidence
Key functionsWater conductivity/filtration/soil/cleaning clearThe map
Water supply capacityTesting under pressure, hydraulic gradients and contact conditionsWatershed report
Filtering layerSingle-sided/both-sided configuration and perforation, penetration matching of the site soilSoil-level distribution and reporting

Selection guides

Customer pain points and project conclusions

Three types of materials cannot be replaced by appearance: geonets are mainly used for support, drainage or integration with vegetation; three-dimensional geomats are oriented towards surface solids and vegetation root muscles; composite drainage networks provide flat drainage through a core network and can be designed on one or two sides of composite geotextiles. Projects should compare design methods to conductive water performance under pressure, hydraulic gradient, contact surface and expected use conditions, rather than replace drainage with empty load thickness.

The four functions of water, solids, filters and surface layer protection are to break down and solve the problem of purchasing the wrong materials, which are close to the name.

Selection guides

Steps to landing

  1. Drawing the drainage pathThe water level, flow, export and containment measures are marked.
  2. Check the soil pressureThe test conditions for the actual soil and construction load are selected.
  3. The following is a list of some of the most common types ofCheck the continuity of connection, consolidation and drainage.

Selection guides

Common risks and addressing them

  • The density of the water is replaced by the water contentThe capacity of the core material after compression may decrease significantly.
  • Exports unprotectedThe water level is not affected by the water pressure.

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