(19)

(11)

EP 3 724 408 A1

(12)

(43) Date of publication: 21.10.2020 Bulletin 2020/43 (21) Application number: 18888086.8 (22) Date of filing: 11.12.2018

(51) International Patent Classification (IPC):  E02D 29/02(2006.01) E04C 1/39(2006.01) E04B 2/02(2006.01) (86) International application number: PCT/US2018/064996 (87) International publication number: WO 2019/118492 (20.06.2019 Gazette 2019/25)

(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: 11.12.2017 US 201762596939 P (71) Applicant: Tensar International Corporation Alpharetta, Georgia 30009 (US)	(72) Inventors: LIEW, Willie Alpharetta, Georgia 30009-2247 (US) PERALTA, Andres F. Alpharetta, Georgia 30009-2247 (US) WISSMANN, Kord J. Alpharetta, Georgia 30009-2247 (US) LUPTAK, Stephen A. Alpharetta, Georgia 30009-2247 (US) SMITH, Aaron D. Alpharetta, Georgia 30009-2247 (US) (74) Representative: HGF  1 City Walk Leeds LS11 9DX Leeds LS11 9DX (GB)