GeoStrata September / October 2016 Ground Improvement
Proudly published by the Geo-Institute of ASCE
Following the M7.8 Kaikoura Earthquake in New Zealand, Hiway Geostabilization (HGS) was awarded the North Face Ohau Point Scaling and High Tensile Mesh Installation contract. The original design to mitigate rockfall hazards included a pinned high-tensile steel wire mesh.
Launched soil nails are a serious tool that geotechnical engineers in New Zealand will find many and varied uses for, not just in the obvious area of steep slope problems.
This paper will present several case studies and will discuss the extent of site investigation
carried out at these sites, as well as outlining the general design assumptions used which
allowed for Geosynthetically Confined Soil (GCS®) walls.
Hiway Geotechnical provides a full range of specialist
construction services including ground anchoring, soil nailing,micro-piling, rope access, drilling and grouting.
This paper examines the soil mixing technique, its applicability to slope instability remedial works and outlines the design and construction process including a number of case studies.
This paper presents a case study on the inaugural use of Turbojet deep soil mixing (DSM) in New Zealand. DSM was selected to provide the necessary ground improvement required for the Hastings District Council (HDC) Waste Water Treatment Plant upgrade.
This paper presents recent developments in the use of deep soil mixing technique in New Zealand road slip
repair works. A brief overview of New Zealand road maintenance history is presented, and the current role that deep soil mixing is playing is described.
This paper presents a case study of the design and construction of deep soil mixing columns in
liquefiable pumiceous sand ground conditions. A new extension to a wastewater treatment plant
was constructed at a waterfront site.
In early 2006, the developer of a site at Wainui in Rodney District, commissioned an Engineer’s report into the suitability of the land for development as a clean fill site.