Prefabricated vertical drains (PVDs) for accelerated consolidation of soft soils

Very slow consolidation of saturated soft clay or organic soil is a process which often requires up to 20-25 years. Consolidation can be accelerated by installing vertical drains to a depth of up to 35 meters, shortening its settlement rate from several years to several months. This process also improves the mechanical properties of the soil, such as shear resistance and bearing capacity.
This advanced technology, employing geosynthetic vertical drains, improves vertical water transport, thus permitting immediate use of the soil while preventing damage caused by differential settlement over the years. The solution of PVDs is economically preferable compared with other accelerated soil improvement alternatives such as vibro compaction and others.


  • Prevention of damages to embankments, roads and engineering structures as a result of small post-construction settlements.
  • Significant economic advantages in comparison to other alternatives such as preloading (time consuming), piled embankments, vibro compaction, stone columns etc.
  • Low construction times, fast economic use of structure.

More Applications

  • Embankment basal reinforcement with high strength geotextiles and geogrids

    Fast construction of high embankments over soft soil requires high strength geotextiles at the base for stability against slip failure


  • Embankment on piles with horizontal reinforcement

    The "geosynthetic-reinforced soil on piles" foundation system is virtually settlement-free and thus ideal for rapid embankment construction.