Carré Nassestraße
Bonn, Germany / 09.2022 - 06.2023
Located in the heart of the historically significant Gründerzeit district, the PORR Spezialtiefbau Düsseldorf branch, in a joint venture with the earthworks contractor Gerhard Kliemt GmbH, excavated the foundation pit for the new building of the Bonn Student Services Association on a site covering approximately 4,600 m². Sheet pile and bored pile walls, as well as DSV underpinning, were used as safe solutions for the 450-meter-long and 7.25-meter-deep enclosure adjacent to existing buildings and in challenging ground conditions.
Facts & Figures
Company
PORR Spezialtiefbau GmbH
Type
Turnkey construction pits
Runtime
09.2022 - 06.2023
Komplexe Baugrube für das Studierendenwerk in Bonn
The specialized civil engineering work for the construction project at Carré Nassestraße in Bonn has been successfully completed. Excavation is finished, and the back anchors and numerous internal supports have been installed. The concrete slab for a lower-level utility area in the center of the construction site has also been poured.
Strong team effort despite numerous challenges
The construction site team had to overcome numerous challenges throughout the project. Long wait times for transport permits, logistical challenges due to the inner-city location, new suspected unexploded ordnance sites, and new findings regarding the building ground extended the planned construction period. Thanks to precise planning, coordinated measures, and close collaboration among all project participants, the complex excavation pit was finally handed over to the client on November 17, 2023.
Comprehensive quality control for greater acceptance
The client placed particular emphasis on reducing noise, dust, and vibrations in this project to minimize disruption to residents. The work was therefore carried out using state-of-the-art technology to minimize vibrations, noise, and dust. Modern equipment was used, pile driving was avoided, and the ground was moistened during dry periods to prevent dust formation. Monitoring of noise, vibrations, and settlement accompanied the work and ensured that the agreed-upon limits were adhered to.
