by nature'
“The vertical microtunneling technique of VLTT is an innovative method in which the closed front technique, or shield drilling, is used to construct a foundation of tubular pile walls to a great depths ( > 75m )."


When to choose MT-Piling®?

This method is ideally suited for large construction or infrastructural works in urban areas.

What are the advantages?

  • Compact design
  • Applicable within limited working space
  • Possibility to install heavy foundation piles to great depths
  • Hardly no vibration when applied
  • Pipes fitted with locks so that space in between posts can be sealed in different ways

How does it work?

MT piles (microtunneling piles) are drilled tubular piles, where the drill bit is reclaimed after installation. VLTT has developed this technique in collaboration with Strukton Betonbouw for the replacement of the foundation underneath Amsterdam Central Station, part of the construction of the North – South Line. Because the pipes are not brought to depth while rotading, they can be applied with locks and the space between the posts can be sealed in various ways. This method makes it possible to install heavy foundation piles to great depths without vibration and operated within a limited working space.