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.

Filter: Graded filter by mixing range of soil particles sizes from gravel to slit

Drainage: The drainage will be provided by a layer of granular material which is liable to get clogged over period of time resulting in decrease in performance

Quality: Material quantity and quality tend to differ along the length of the wall due to construction sourcing and human error issues

Ease of construction: Construction would be difficult especially laying the granular material in gradation behind wall

Cost: The cost of construction is high due to construction of several elements for the drainage function and difficulty of construction as mentioned above

Filter: Geotextile layer at the base acts as filter

Drainage: The drainage net will do the function of draining off water with geotextile layer acting as a filter which will not aloow clogging to occur

Quality: High level consistency in quality and is maintained

Ease of construction: Construction is simple as it is very easy to lay the Geocomposite

Cost: Reduction in excavation elimination of gravel bed, perforated pipe network and slurry seal and ease of laying Geocomposite results in lower cost of construction

Filter: better filter function because of controlled quality

Drainage: A much thicker drainage layer can be replaced with a thin layer of Geocomposite performing equal or better for the required drainage fubction

Quality: Better and consistent quality

Ease of construction: Faster and economical construction

Cost: Cost effective and faster construction