Earth moving, improvement and recycling

On behalf of BAM Wonen, Bonneveld Aannemingsbedrijf carried out all the soil and remediation work for the new Berghaus building in Amsterdam, including drainage and soil improvement. With the grout recycling installation developed in-house, Bonneveld was able to significantly reduce the number of transport movements and thus limit the inconvenience.

"Already in the first quarter of 2022, we started remediating the site," begins Harry van der Heiden of Bonneveld Aannemingsbedrijf. "We removed the necessary contaminated soil and pretty soon after that we installed a 110-meter-long berliner wall in the waterway adjacent to the lot. The berliner wall was then backfilled to ground level, creating more space for the construction site." In fact, Bonneveld also handled the complete construction site design, leveling the site and providing it with "pavement" in the form of
Of industrial plates.

Grout recycling plant

The new Berghaus consists of two residential towers atop a plinth and good for a total of 288 housing units, while a third tower of 21,600 square meters provides additional office space. Parking is provided in the underground parking basement. "For this purpose, in the preliminary process we realized a sheet pile pit with an area of no less than 9,500 square meters," says Anco van der Heiden of Bonneveld Aannemingsbedrijf. "Then the foundation piles were installed from ground level, during which we separated the water and sand from the grout mixture using our grout recycling plant. This significantly reduced the amount of grout to be disposed of. Fewer transport movements result in fewer emissions and less inconvenience to the surrounding area."

Routine job

Once the piles were in place, it was Bonneveld's job to excavate the tub between the piles "in the dry. "To get a dry pit underneath as well as to allow the grout recycling plant to function properly, we constructed a good drainage system. Creating a dry tub, you can trust us with that. It's routine for us," Van der Heiden says proudly. In total, Bonneveld excavated and removed some 17,000 m3 of solid soil on this project. And all that between the piles to a depth averaging 4 meters from surrounding ground level. "At the bottom of the pit, we applied soil improvement by applying a 50-centimeter layer of sand. All in all, another great reference project, in which we carried out various optimizations to the benefit of our client BAM."