This Specification sets out requirements for the construction of bored or driven pile types. This document is published in collaboration by the Structural Engineering Society New Zealand (SESOC) and the New Zealand Geotechnical Society (NZGS). This document supersedes the Auckland Structural Group publication “Piling Specification”…
Abstract The Christchurch Northern Corridor is a scheme involving the construction of a new 4-lane highway connecting the City of Christchurch to the Northern Arterial Motorway. The scheme’s site is predominantly underlain by up to 15m of alluvial deposits including very weak, highly compressible peat…
Abstract In the paper on cantilever pole walls presented in the June 2021 issue of NZ Geomechanics News (NZGN) a summary was presented of analysis methods for determining the lateral load capacity of the embedded pole foundations (Wood, 2021). The testing of rigid timber poles…
Abstract An issue faced by young geotechnical professionals is when to terminate the Standard Penetration Tests (SPT) when advancing a borehole during a geotechnical investigation. This issue commonly arises in the soil-rock interface zone where the ground mass is transitioning from a soil to a…
Abstract A multifaceted desktop and field based geotechnical survey and geohazard mapping project was completed for over 25,000 ha of mixed rural and urban land identified for potential future urban growth and development within the Kaipara District in Northland, New Zealand. The project included desktop…
Abstract A residential development in the northern Waikato requires the excavation and placement of 700,000m3 of earth fill to generate suitable building platforms for domestic dwellings and associated infrastructure. During the first season of earthwork operations the highly variable and sensitive nature of the volcanically…
Abstract The geotechnical behaviour of natural pumiceous soil deposits is highly dependent on the percentage of highly crushable pumice particles to hard-grained sands, within the soils matrix. There is currently no standardised method to quantify the pumice content of a given soil sample. The research…
NZS 4431:2022 – Engineered fill construction for lightweight structures is an update of the 1989 standard, with significant changes reflecting over thirty of years of improvements in geotechnical investigation, design and construction practice, test methods and environmental, consenting and health and safety obligations. The standard…
Comments and opinions expressed in this article are not necessarily those of Waka Kotahi Waka Kotahi welcomes additional SMEs Programme and Standards-Transport Services-System Resilience Team, led by Richard Topham, has welcomed new subject matter experts in the geotechnical and drainage fields. This brings the geotechnical…
A biased view of the development of engineering geology in New Zealand Background Engineering geology is the application of geology to engineering for the purpose of ensuring that the geological factors, including hazards, affecting a site or scheme are recognized and taken into consideration during…
