(19)

(11)

EP 3 841 260 A1

(12)

(43) Date of publication: 30.06.2021 Bulletin 2021/26 (21) Application number: 19756169.9 (22) Date of filing: 19.08.2019

(51) International Patent Classification (IPC):  E04B 5/04(2006.01) E04B 5/43(2006.01) E04B 5/48(2006.01) E04B 5/06(2006.01) E04B 5/02(2006.01) (86) International application number: PCT/EP2019/072109 (87) International publication number: WO 2020/038871 (27.02.2020 Gazette 2020/09)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 23.08.2018 GB 201813794 (71) Applicant: Laing O'Rourke Plc Dartford, Kent DA2 6SN (GB)	(72) Inventors: SCOTT, David Crossways DARTFORD Kent DA2 6SN (GB) RUST, Glen Crossways DARTFORD Kent DA2 6SN (GB) KOTECHA, Raj Crossways DARTFORD Kent DA2 6SN (GB) (74) Representative: Cookson, Barbara Elizabeth  Filemot Technology Law Ltd Popes Head Court Offices Peter Lane York YO1 8SU York YO1 8SU (GB)