Geosynthetics can be effectively used as drains and filters in civil and environmental works in addition to or in substitution to traditional granular materials. Geosynthetics are easier to install in the field and often cost-effective in situations were granular materials available do not meet design specifications, are scarce or have their use restricted by environmental legislations.
Geotextiles and geocomposites for drainage are the types of geosynthetics used for drainage and filtration. These materials can be used in works such as retaining structures, embankments, erosion control, waste disposal areas, etc.