Drains: The time required for soft soil consolidation can be drastically reduced with the application of vertical drains. Prefabricated vertical drains consisting of corrugated plastic sheets with geotextile filters are pushed into the soil by means of a steel mandrin and left in place while the mandrin is extracted.

Interstitial water contained in the soil is filtered by the geotextile and brought to the surface by the corrugated sheet where it can be easily collected and canalised.

The equipment is able to reach more than 30 m depth with the option to use vibrators to facilitate the introduction of the drains and overcome possible obstructions.