We implemented the foundation engineering work in Pasila for the Mall of Tripla, hotel, office and residential buildings and an underground parking hall for 2,300 cars as well as the reinforcement work of the foundations of Pasila station.
Construction excavations
We have extensive experience of the execution of demanding construction excavations.
Excavations require special care in safety and are generally supported to ensure the safety of workers and passers-by.
Building excavations must often be supported by permanent or working support walls, either for geotechnical reasons or to make more efficient use of space when building a trench in a cramped urban area. Support walls are also widely built in connection with infrastructure construction projects, for example in fairway and beach construction sites. Support walls can be during working hours or they can remain part of a permanent structure. The support walls of the trenches can be built waterproof if necessary.
Retaining walls
Demanding excavation is often a combination of strict space restrictions, logistics for difficult sites, and strict environmental requirements for vibration, noise, subsidence, and groundwater management. Support walls are typically implemented as steel pontoon walls, drill pile set walls, drill pile walls or shower column walls and often as a combination of these. Support walls are often anchored by permanent or working rock or ground anchors.
We have a long experience in designing and dimensioning retaining walls. We always strive to achieve the most cost-effective and appropriate outcome. In geotechnical and work planning, we always take into account functional aspects such as space requirements and logistics requirements, as well as comply with strict environmental requirements in the management of vibration, noise, subsidence and groundwater.
Sheet pile wall
We use efficient variable torque and resonance-free high-frequency vibrations for the installation of shafts, which minimize the vibration disturbance transmitted to the environment. With high-frequency staring, it is possible to penetrate even a tight mortar. The equipment can also be installed under the right conditions with vibration-free pressing (SPP). Thanks to our extensive and flexible fleet, we can, for example, drill open when necessary to facilitate the installation of a shingle wall line. We also have a crane-hanging vibrator that allows us to efficiently install long piles and piles in a single length. The dangling vibrator is also suitable for places where installation equipment cannot be placed next to it. With our equipment, we can also install pile pipes by vibrating. To install the drill pile wall, we have a powerful and modern drill pile equipment (link to drill pile) that allows us to drill piles with locks. We are also able to make jet injected (link to jet injecting) waterproofing structures in connection with retaining walls.
Our anchoring equipment is extensive and can be used to install all types of retaining wall anchors. Anchors can be installed with a permanent ground protection pipe or a work pipe that can be lifted up after the anchor installation. We also install through-injectable bar anchors. In anchor drilling, we always take into account the risk of subsidence and disturbance of the surrounding soil and choose the working technique accordingly. We can use water or air flushing, as well as, if necessary, a water hammer for drilling. We manufacture working and permanent anchors on our own production line in accordance with the standards. We will build and, if necessary, dimension the resistance structures of the anchors and take care of the tensile and discharge stress work of the anchors with the certainty of long experience.
Varikkotie – wide-ranging expertise in infrastructure construction
The Varikkotie site is about as multifaceted as an infrastructure construction gets.
Contact us for more information
Sampo Salojärvi