In saturated soils such as clay and silty clays, which have a large percentage of voids or pores usually filled with water, large settlement will occur over a long period of time when a load such as a road embankment is placed on top of the soil. The load will result in an initial increase in porewater pressure which will dissipate slowly as the porewaterdrains off. During this process called consolidation, the load is gradually transferred to the soil particles as the volume of the voids are reduced and this culminates in the form of settlement. The consolidation process-due to the very low permeability of clay soil and silty clay soil, the consolidation process will take many years. In order to accelerate and reduce the consolidation time, vertical drains are installed at regular close spacing to the full depth of the compressible layer, to create artificial and shorter horizontal drainage paths for the pore water to drain off. In addition, this will also take advantage of the higher permeability of the soil strata or sand lenses in the horizontal direction. During this accelerated process, the soil will gain an increase in shear strength. Normally, vertical drains are used in conjunction with preloading by surcharge with soil or vacuum pressure. In projects like tank farms, water can also be used as surcharge. Benefits: High water discharge capacity ensure sound safety factor, the unique and flexible core will not pinch off or flatten when the drains bends and folds during the consolidation of the soils, high compressive strength of the core to prevent the collapse of the flow path, deep installation exceeding 40m depth, light weight, customised core and filter jacket to suit particular soil conditions, minimum disturbance to the soil during installation, fast installation, short consolidation period, well proven performance in many prokects under different soil conditions. Nylex pvd has been supplied to projects in various countries in europe and east asia. The type of projects when it has been used successfully are: Construction of roads, highways and expressways, treatment of ex-mining areas for housing development, container yards and harbour construction, land reclamation for the construction of airport runways and buildings, construction of tank farms, commercial development in ex-agriculture land. Nylex Prefabricated Vertical Drains Certification(s): MS ISO 9001