What we do in our SWM & ESC plans(3)? Filters

The filter design around the drain tiles or in any drainage system is a very important task in our designing process. We normally cope with following questions?

  • Organic, synthetic, sand, gravel and what gradation and dimension should we consider?
  • What kind of textile filter and what specification? Non-woven or woven textile? Should we use the common landscape mat?
  • How should we deal with fine soils (clay and silt) migration toward the drain line? what about the plant root penetration?
  • How to design to have a desirable operation and maintenance? Not clogging and blockage mess.

Any project has it’s dedicated design and criteria for the drains’ filter that should be addressed by designer.

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