Frederiks Plads in Aarhus

Skills

Construction Facility Foundation

Professional contract

Builder:

Jabo Ejendomme

Cooperation partners:

Underentreprise for Raundahl og Moesby

Period:

2024

We drilled and cast piles to a depth of 30 m

M.J. Eriksson has carried out excavation work and constructed the basements for two new high-rise buildings, one of which will be 100 m tall, making it the tallest building at Frederiks Plads in Aarhus.

Our foundation department was responsible for the pile and sheet piling work. We sank 101 piles to a depth of 30 m and installed 76 HEA400 steel piles, each 18 m long. Additionally, we installed 60 linear metres of KBH sheet piling.
This was a challenging project where we gained significant experience with the Viborg clay, which placed high demands on our drilling machines due to its high-friction nature.

Did you know?

When the drilled piles were being sunk into the ground, it was crucial to maintain soil pressure and ensure that the concrete and reinforcement remained in position. Therefore, we drilled a casing into the ground along with the drill.

The casing was pulled up using an oscillator with a pulling force of 100 tonnes. This was necessary because the clay at Frederiks Plads was very sticky and adhered to the casing. See the image below.

Six machines on a 1,400 m² site

In the excavation pit, our construction department has built a two-story basement, where we cast 2 m thick foundation slabs embedded with 72 anchors. We constructed all precast concrete walls, including drainage and moisture insulation, and installed the walls and foundation slab for the lift shafts. Additionally, we built staircases and landings.

During the excavation of the construction site, we removed 15,000 tonnes of soil, of which 2,000 tonnes were classified as category 4 contaminated soil. The oil-contaminated soil was transported to Kingo in Silkeborg, while the soil to be surveyed was taken to Norrecco at the Port of Aarhus.

As in many construction sites, space was limited and the schedule was tight. Therefore, the machines worked closely side by side to complete the work within the 1,400 m² area.