Boskalis Nordic Today No. 01/2019
04 CITY OF HELSINKI | KRUUNUVUORENRANTA – KOIRASAARET AND STANSVIKINRANTA PRECONSTRUCTION CONTRACT PRECONSTRUCTION FOR NEW HELSINKI RESIDENTIAL AREA
TEXT & PHOTOS: MARKKU SALONEN | PHOTOS 01 JA 05: TERRAMARE | GRAPHIC 02: CITY OF HELSINKI
T erramare is implementing at Kruunu- vuorenranta, Helsinki, a preconstruc- tion contract that will facilitate the building of a new seaside residential area and milieu. The contract includes sea-filling in the Koirasaaret area and the construc- tion of a new swimming beach at Stansvi-
kinranta. The work was launched in April this year and will take approximately one year to complete. Terramare started the contract with dredg- ing work, in which soft masses consisting mainly of clay have been removed from the sea-filling and swimming beach areas.
The dredging has been carried out by Ter- ramare’s grab dredger Kahmari 2. The towable barges SCG 3, SCG 4 and SCG 6 served as loading vessels. Environmental dredging was also done in the contract, in the secondary basins of an oil harbour for- merly located at the site. The sea-filling to be implemented for future Koirasaaret residential district covers an area of 6.7 hectares. Both blasted rock and crushed aggregate are used for the filling. “The blasted rock used in the sea-filling of the Koirasaaret area is obtained from the city’s blasted rock storage facility, conven- iently located only a couple of hundred me- tres away, to which blasted rock has been brought over the years from worksites in the Helsinki Metropolitan Area. And there HELSINKI EXPANDED BY SEA-FILLING
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