ABSTRACT Case histories are provided for the response to three landslide events that significantly disrupted main road networks during 2017 in the lower North Island. A large rock fall event on 11 July 2017 blocked traffic into Wellington on State Highway 1 (SH1) in Ngauranga…
ABSTRACT Tensar uniaxial geogrids are molecularly oriented polymeric grid structures developed for tension resistant inclusions in soil walls and slopes. When stressed the geogrid must be capable of sustaining the load without rupture over the design life of the structure. The earliest use of high-density…
ABSTRACT This case study describes the design and construction of an MSE (Mechanically Stabilised Earth) wall in the geological environment of the Taupō Pumice Formation, a non-welded ignimbrite and reworked deposits from the 181 AD Taupō eruption. The engineering properties of the pumice and the…
ABSTRACT During recent construction of an overpass bridge on soft ground, piled ground improvements were used to reduce the settlement of the bridge abutments and approach embankments. The piles were installed prior to construction of the approach embankments, under which significant consolidation settlement would occur…
ABSTRACT Inner city developments generally include deep basements that require perimeter retention to facilitate the excavation. Ground anchors are readily selected as part of the retention system due to their ability to be stressed and prevent structural movement. Ground anchors comprise steel components and often…
ABSTRACT The use of steel tendons in soil nailing and ground anchoring has been commonplace for both permanent and temporary applications. Double corrosion protection (DCP) is required to ensure a serviceable design life, and these have evolved to become complicated assemblies comprising numerous components. This…
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ABSTRACT The Mw6.2 22 February 2011 and Mw6.0 13 June 2011 earthquakes caused significant and wide-spread damage to the Christchurch infrastructure networks, including the Christchurch water networks (potable, waste, and storm). The transient and permanent ground deformations generated by these two earthquakes severely damaged buried…
ABSTRACT The Magnitude (Mw) 7.8 Kaikōura earthquake struck the east coast of the South Island of New Zealand in November 2016, resulting in widespread damage to the slopes along the Kaikōura coast. Many of the subsequent remediation measures relied on rock anchors, and a significant…
ABSTRACT Waka Kotahi, the New Zealand Transport Agency (NZTA), under its policy of providing a safer and more resilient road network, has adopted the NSW Government Transport, Roads & Maritime Services ‘Guide to Slope Risk Analysis’ to provide a consistent methodology for assessing safety to…