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

Area(s) of expertise

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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