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Micro Piles & GCS® Wall at Waitomo

Micro Piles & GCS® Wall at Waitomo

This project involved the design and construction of three retaining walls to remediate slips and increase the road width. Hiway GeoStabilization’s design involved installation of micropiles and construction of a reinforced concrete footing. Once the footing was completed Hiway GeoStabilization installed soil nails and rockfall mesh netting on the embankment. A GCS® wall was then constructed and finished with a masonry block facing. Construction works were undertaken under Level 1 Stop/Go traffic control, as the road was too narrow to enable sharing of a single lane of traffic with construction machinery.
This project involved extensive testing and quality control for both the soil nails and micropiles, including pull-out tests, grout UCS testing, as well as significant compaction testing of the GCS® wall backfill.