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(11)

EP 1 404 930 A1

(12)

(43) Date of publication: 07.04.2004 Bulletin 2004/15 (21) Application number: 02729643.3 (22) Date of filing: 04.06.2002

(51) International Patent Classification (IPC)7: E04B 5/29, E04C 3/293 (86) International application number: PCT/AU2002/000716 (87) International publication number: WO 2002/099215 (12.12.2002 Gazette 2002/50)

(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: 05.06.2001 AU PP548101 18.01.2002 AU 1194102 (71) Applicant: Bonacci Beam (International) Pty Ltd Richmond, Victoria 3121 (AU)	(72) Inventors: BONACCI, Natale Hawthorn, Victoria 3122 (AU) ROSSITER, Stuart, George Boronia, Victoria 3155 (AU) (74) Representative: Callon de Lamarck, Jean-Robert et al Cabinet Régimbeau20, rue de Chazelles 75847 Paris cedex 17 75847 Paris cedex 17 (FR)