Hiway GeoStabilization was engaged as a specialist ground improvement sub-contractor to design and build five slip sites on SH1 Dome Valley. The soil nails were installed using both rope access hand drilling and our purpose-built SuperNailer machine. The original contract was for three sites, with an additional two sites added during the contract following a high degree of Client satisfaction on the first three sites. Extensive pull-out testing was undertaken on the soil nails as was UCS testing on grout samples.
The project involved the design and build of 3 retaining walls to remediate slips, and increase the road width, Hiway Geotechnical’s design involved installation of micro piles, construction of a reinforced concrete footing.