In order to build solid foundations for the new building of the National Institute for Health & Environment (RIVM) and the Medicine Evaluation Board (CBG), Franki Grondtechnieken combined many techniques and knowledge.
+ excavation, leveling and drainage; cut-off of the pileheads (new and existing), removal of excavated soil and drilling spoil.
Cutter soil mix (CSM) wall
The building will be surrounded by a retaining wall made of anchored CSM wall, that will permanently retains the soil. The basement and the building will be built inside the wall, with a 0,5 m air cavity in between.
To prevent water damage, a horizontal injection layer will be realized at 7 m below ground level.
Implementation of the injection layer consists of injecting sand with a mixture of water glass and hardener. After curing of the product, a dry closed construction pit is created and can be excavated without problems.
The soil injection is done by BE Inject, the injection department of Franki Foundations.
The RIVM works with advanced laboratory equipment which is highly sensitive to vibrations. It is thus important for the new building to absorb vibrations so they do not hinder the workings of laboratory equipment.
Various measures have been incorporated in the design to meet those requirements. The tower shifted 20 m further from the tram line for instance.
Foundations also play a major role in this, and so it has been decided to use larger and longer piles and introduce air cavities in the ground surrounding the building so as to absorb vibrations.
RIVM - CBG building
Governmental, Cultural and Religious
Injections, Soil mix - CSM wall, Ground anchors and nails, Large diameter bored pile under thixotropic fluid
Utrecht, The Netherlands
MEET RIVM CBG bv
2017 - 2018
Felix Claus Dick Van Wageningen Architecten