ABSTRACT Regional-scale liquefaction susceptibility assessments have been completed for the Otago region. The assessment used an office-based evaluation of existing information, equating to a ‘Level A’ basic desktop assessment as per MBIE guidelines for liquefaction-prone land. Information sources included geological maps, landform and soil maps,…
ABSTRACT For sites with shallow soil layers consisting of loose sand and/or potentially liquefiable soil, timber compaction piles (TCP) can be driven into the ground to improve the geotechnical performance of the site, particularly for land supporting residential and lightweight commercial or industrial buildings….
ABSTRACT Previous studies have shown that pumice particles are highly crushable, compressible and lightweight as a result of their vesicular nature. Hence, they are problematic from an engineering viewpoint. Currently, there is limited information on the geotechnical characteristics of pumice deposits. To address this,…
ABSTRACT The Jeffreys water supply pump station comprises replacement of the earthquake-damaged 200m3 concrete suction tank with a new 500m3 tank. Ground conditions at the site predominately comprise interbedded alluvial silt and sand in the surficial 8.75m, underlain by dense sandy gravel. Surficial soils…
ABSTRACT Using a database of 230 co-located cone penetration tests (CPT) and boreholes with standard penetration tests (SPT) from sites across Christchurch, New Zealand, this paper assesses the applicability of a range of existing SPT-CPT correlations from international studies. Both simple linear CPT-SPT relationships…
ABSTRACT Design in New Zealand is increasingly requiring parameters obtained from in-situ seismic testing for use in modelling and assessment of the built environment. In New Zealand shear wave velocity (VS) profiles are most commonly required. However, the quality of in-situ seismic testing can…
ABSTRACT This study reports the results of an experimental investigation into the use of ground rubber (GR) products, at varying contents and sizes/gradations, as a sustainable solution towards improving the inferior geotechnical attributes of a subgrade clay deposit located in Adelaide, South Australia. A…
ABSTRACT The Wynyard Edge Alliance (Auckland Council, the Crown represented by Ministry of Business, Innovation and Employment, Downer, McConnell Dowell, Beca, Tonkin & Taylor Ltd) was formed to design and construct the infrastructure to support the 36th America’s Cup event in Auckland. In addition…
ABSTRACT Following the M7.8 Kaikoura Earthquake GeoStabilization NZ Ltd (formerly Hiway GeoStabilization Ltd) were 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. The ground…
ABSTRACT This paper presents the results from direct shear testing of gravel-rubber mixtures through laboratory experiments and numerical simulations using discrete element method (DEM). Mixtures with volumetric proportions of 0%, 10%, 25%, 40% and 100% granulated rubber were tested using a conventional, medium-sized direct…