Project Brussels, Belgium

The One

A tower at the heart of Europe

Sector: Buildings

Deep foundations for a tower including offices, housing, commercial spaces and car park ... at the very heart of Europe.

Technical characteristics

Diaphragm wall

  • about 5.000 m²
  • 600 to 800 mm thickness
  • down to 45 m


  • 46 barrettes excavated under bentonite
  • 800 to 1.000 mm
  • 30 to 70 m deep
  • installation of plunge columns in the barrettes to allow for a top-down construction

Large diameter bored piles

  • Pre-drilling of existing piles prior to execution of diaphragm wall by executing large diameter bored piles
  • Ø 1.500 to 2.000 mm
  • 25 m long

Project details

Project name

The One


High Rise, Residential, Offices, Commercial


Diaphragm wall, Barrette, Large diameter bored pile under casing

Contract type



Brussels, Belgium

External partner(s)

Atenor - Brussels Europa sa


Louis De Waele / Valens

Building Period

2015 - 2016


BURO II & Archi +I

Total value

€ 2.3 million

Diaphragm wall

Top-down columns

large diameter bored piles

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