(19)

(11)

EP 1 366 240 A1

(12)

(43) Date of publication: 03.12.2003 Bulletin 2003/49 (21) Application number: 02704751.3 (22) Date of filing: 04.03.2002

(51) International Patent Classification (IPC)7: E01C 11/10, E04B 1/68, E04F 15/14 (86) International application number: PCT/EP0202/737 (87) International publication number: WO 0207/2959 (19.09.2002 Gazette 2002/38)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 09.03.2001 GB 0105832 (71) Applicant: Construction Research & Technology GmbH 83308 Trostberg (DE)	(72) Inventor: BOENI, Roland CH-8525 Niederneunforn (CH)