Hall construction on structural stabilization instead of beam foundation
In 2001 a new building of a factory building was planned in Beek and Donk, in the Netherlands. This new industrial building project was planned for assembly in the immediate vicinity of existing buildings. Due to the geological situation on the site, a conventional flat surface for the planned warehouse was not possible. During a geological inspection of the project site it was established that the sand layers, which are present in the subsoil, have a maximum bulk density to a depth of at least 9 m and are therefore not suitable for load deflection. Only at a depth of at least 11 m below the surface of the terrain, the number of vibrations or the penetration resistance increases so much that a reduction in load becomes possible. The high groundwater level was a further circumstance, making a conventional flat foundation difficult. At the time of the geological inspection, the groundwater level was only 0.80 m below ground level in the area of the project site.
The plan was to develop a concept for a level foundation that would make it possible to build the hall without the use of planks and strip foundation. The supporting elements of the hall had to be anchored directly with tie rods in the GeoCrete® foundation layer. Because of these limitations, a concept for a flat surface was developed using GeoCrete® reinforcement, which would make it possible to build the hall without traditional strip foundation. In this concept, the support elements of the hall construction had to be anchored directly with tie rods in the GeoCrete® foundation. Due to the reinforcement of the existing building land by means of GeoCrete® ST, the following measures, which would have been mandatory for a conventional level foundation, have been saved or avoided.
- A reduction of the groundwater level can be avoided. By maintaining the natural groundwater level, uncontrollable settlement damage on the surrounding buildings was excluded.
- Covering the existing building land and removing the excavated soil were also not necessary.
- A reduction of the occurring load was achieved by without the concrete base floors for the support elements.
- A floor thickness reduction is plausible. However, this has not been included in the scope of the constructor. Perhaps a steel fiber floor offers a good combination.
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