GEOWEB® HAWAIIAN REPAIR UTILIZES MSE WALL SOLUTION

PROJECT BACKGROUND by constructing MSE walls with Genuine Six occurred on military ser- Geoweb® cellular confinement facing vice along the side of a ravine and reinforcement, instead of during a 40 day rain storm. Surface wa- structural walls with vertical piles. ter runoff on the roads triggered em- bankment failures in clayey fill THE FLEXIBLE ALTERNATIVE and saprolite. When the US Army Corp The Geoweb system was selected as of Engineers advertised the design-build the MSE wall facing due to the system’s project, their conceptual designs only light weight, flexibility during installation, considered structural walls with vertical tolerance to settlement, and availability piles. on the island of Oahu. Additionally, the DESIGN & CONSTRUCTION TEAM green geocell facing blended with the

General Contractor: MSE WALL BENEFITS lush tropical vegetation of the ravine. Hal Hayes Construction The winning design-build team of Hals Hays Construction and AMEC Environ- A GREENER SOLUTION Earthwork: Koga Engineering & Construction mental & Infrastructure determined pile This project demonstrates the advan- structures were too expensive and too tages of using geosynthetic materials Engineer: difficult to construct safely near the edge and the advantage of the design-build Todd Wentworth, PE LG of the landslide scarps. AMEC decided contracting process. AMEC designed AMEC Environmental & Infrastructure Honolulu, HI that mechanically stabilized earth (MSE) the Geoweb system to repair the walls could be constructed less expen- landslides using safer, lighter, Material Supplier: sively, quicker and more safely. The greener and less expensive materials GeoTech Solutions, Honolulu, HI p r o j e c t s a v e d $ 1 . 5 m i l l i o n than the original concept of pile sup- (approximately 50% of the project cost) ported structural walls.

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