(19)

(11)

EP 2 142 717 A1

(12)

(43) Date of publication: 13.01.2010 Bulletin 2010/02 (21) Application number: 08775456.0 (22) Date of filing: 30.04.2008

(51) International Patent Classification (IPC):  E04B 1/24(2006.01) (86) International application number: PCT/FI2008/050237 (87) International publication number: WO 2008/135634 (13.11.2008 Gazette 2008/46)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR (30) Priority: 03.05.2007 FI 20075312 (71) Applicant: Rautaruukki OYJ 00810 Helsinki (FI)	(72) Inventor: MOISIO, Marko FI-05460 Hyvinkää (FI) (74) Representative: Heinänen, Pekka Antero et al Heinänen Oy Patent Agency Airport Plaza Äyritie 8 D 01510 Vantaa 01510 Vantaa (FI)