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15 October 2012 11:22

Ruukki's RD pile wall receives the 2012 GeoTeko award

Rautaruukki Corporation Press release 15 October 2012 at 10am EEST

The Finnish Geotechnical Society (SGY) has selected Ruukki's RD pile wall as this year's outstanding geotechnical achievement. The final selection from among the top three candidates was made by this year's honorary judge Risto Vahanen, who is the chairman of the Finnish Association of Civil Engineers as well as the chairman of Vahanen Group board of directors. The recognition was awarded during InfraExpo on 9 October 2012 as a part of an invitation-only seminar organised by the Finnish Transport Agency.

Developed in close cooperation with various construction industry stakeholders, the RD pile wall is a unique innovation in foundation construction. The wall system provides rigid retaining wall structures for demanding ground conditions. Based on Ruukki's drilled RD-piles, the RD pile wall consists of individual piles joined together by means of an innovative RM/RF interlock. The new lock type ensures superior watertightness in wall structures.

The RD pile wall structure replaces more traditional retaining wall and foundation structures, minimising build times and generating savings in overall project costs. The RD pile wall structure is easy to install all the way down into the bedrock, eliminating many of the technical risks involved in traditional retaining walls, such as water leaks and insufficient horizontal support. It also eliminates unexpected delays and helps to stay on schedule.

The RD pile wall has been utilised in a number of demanding projects in Finland, Sweden, and Norway. In the E6 project in the Norwegian town of Trondheim, the RD pile wall was used in conditions that were deemed too extreme and risky for any other alternative to be used. In Finland, the RD pile wall has been successfully used in the watertight excavations of the city centre expansion project in Helsinki's Kalasatama, as well as in Katajaharju shaft and Koivusaari metro station excavations, both a part Länsimetro, Helsinki Metro's extension project.

SGY's GeoTeko award is presented to a geotechnical innovation, project, person, or other party best representing the high degree of Finnish geotechnical expertise. This year's winner selection criteria focused on innovativeness as well as technical and financial aspects. For Ruukki, this is the third time to receive a geotechnical recognition from SGY. The previous two instances were both SGY's Geokohde awards, presented every five years. The first time was in 1996, when Ruukki was awarded for the development for driven steel piles. The second recognition time was in 2007, this time for development work related to drilled piles.

Additional information: Petri Nieminen, SVP, Infrastructure Construction, tel. +358 20 593 8568

Ruukki provides its customers with energy-efficient steel solutions for better living, working and moving. Ruukki operates in some 30 countries and employs around 11,800 people. Net sales in 2011 totalled EUR 2.8 billion. The company's share is quoted on NASDAQ OMX Helsinki (Rautaruukki Oyj: RTRKS). www.ruukki.com

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