DRAINAGE PREFABRICATED VERTICAL DRAINS (WICK DRAINS) Geotextile Filter Dimensional Properties Discharge Capacity Gradient = 1.0 ASTM D4716 [5] Confining Stress TechFab India l www.techfabindia.com TD3540T Corrugated/ Fish Bone PP PP/ PET NP 0.1 (0.32) 4.0 (157) 2.5 NP 100 X 10-6 [1] SDC CC EM [2] PE PP PET = Single dimpled core = Channel core [3] NWNP = Nonwoven needle punch NW = Nonwoven = Entangled mesh = Polyethylene = Polypropylene = Polyester O/C = Other or combination [4] Test performed on composite and not just the core [A] Test modified as follows: i=0.1, confirming stress=350 kPa, PVD within sand-bentonite soil layer, between flat plates. [5] Flat plates NP = Data not provided by manufacturer NA = Not applicable, per manufacturer « Geosynthetics recommends you contact the manufacturers before making any specifying/purchasing decisions » 84 Geosynthetics | December 2023 January 2024 Product Name Core Structure [1] Core Polymer [2] Polymer [2] Type [3] Width/Length m (ft) Composite Thickness ASTM D5199 mm (mil) Composite Wide With Tensile ASTM D4595 [4] kN/m 10 kPa m3/s 300 kPa m3/shttp://www.techfabindia.com