Swedish tax office falls to Husqvarna robot

By Lindsay Gale11 June 2012

Pentka's DXR 250 at work on the Swedish Tax Agency building in Stockholm

Pentka's DXR 250 at work on the Swedish Tax Agency building in Stockholm

The Swedish Tax agency office in the Solna district of Stockholm, Sweden, is currently being demolished to make way for a new office development. A major challenge of the job is the fact that the Agency's data centres are housed under the building, meaning that vibrations resulting from the demolition must be strictly controlled and minimised. As a result, the use of a Husqvarna DXR 250 demolition robot equipped with the company's DCR 300 crusher attachment was considered the best option by Pentka Demolition, who is tasked with the work in conjunction with Contender Demolering, who is carrying out the drilling of holes through the concrete.

The reinforced concrete floors and beams from the courtyard are being removed to open the courtyard out completely, requiring a strong crusher. With its 45 tonne crushing force, the DCR 300 is proving to be a successful solution, allowing the work to be carried with more speed and precision. Pentka's Toni Karhunen has developed a suite of settings specifically for the work, allowing the speed of the machine to be adjusted from a distance while reading pressure and temperature data remotely.

Toni's father Pentti Karhunen said of the work: "The challenge was how to perform the demolition without having to break up the concrete in order to reduce the amount of vibration. Vibration meters are fitted around the entire building to keep us updated on what is going on. We also have to take into consideration the other office blocks around the buil­ding."

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