Prefabricated Vertical Drain

Prefabricated Vertical Drain (PVD) is artificially-created drainage paths which can be installed by one of several methods and which can have a variety of physical characteristics. The use of vertical drains along with precompression has the sole purpose of shortening the drainage path (distance to a drainage boundary) of the pore water, thereby accelerating the rate of primary consolidation. PVD is normally use in combination with either Vacuum Consolidation Method (VCM) or conventional preloading (embankment).