Meeting

Soil and Rock Logging – AS1726 Geotechnical Site Investigations

The course aims to educate geotechnical engineers, geologists, geotechnicians and other relevant professionals such as civil and structural engineers, who find themselves logging and/or interpreting soil and rock logs in accordance with AS1726 – Geotechnical Site Investigations. The content assumed that the participants already have a basic understanding of soil and rock logging. The course More Information…

Concepts & Parameters Related to Ground Improvement Illustrated by Case Histories

The International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE) Technical Committee on Ground Improvement has proposed a classification system of ground improvement techniques according to the general nature of the soil, (frictional or cohesive) and the inclusion or not of added material (http://www.bbri.be/go/tc17). This classification system has been detailed in the state of the More Information…

2009 E.H. Davis Lecture: Recent Advances in the Application of Vertical Drains and Vacuum Preloading in Soft Soil Stabilization

Much of the world’s essential infrastructure is built along congested costal belts composed of highly compressible and weak soils up to significant depths. Alluvial and marine soft clay deposits have very low bearing capacity and excessive settlement characteristics, with direct design and maintenance implications on tall structures, large commercial buildings, as well as port and More Information…

March 2010 edition of Australian Geomechanics ‘Geotechnology of Victoria’

Changes of Thornthwaite’s Total Moisture Indices in Victoria from 1948-2007 and the effect on seasonal foundation movements Dominic Lopez (USL Group Pty Ltd., Emerald, Victoria) C.W. Thornthwaite first presented the Total Moisture Index (later known as the Thornthwaite’s Moisture Index, TMI) in 1948. This paper presents the TMI values calculated for Victoria, and shows that More Information…

New Piling Code AS 2159-2009

Do you know the implications of the new piling code? The new piling code ‘AS 2159-2009 : Piling – Design and installation’ was released in November 2009. The revised Code will incorporate some major rethinking in respect of pile design and testing, which is expected to require significant changes from consultants and piling contractors. We More Information…

AGS Newcastle City Geology Tour

The AGS Newcastle City Geology Tour is loosely based on the excursion given in Field Geology of New South Wales by Branagan and Packham (2000), and Dr. Branagan himself has kindly agreed to offer his expert commentary at the various destinations.  The morning component of the tour (approximately 8:00-12:00) will commence at King Edward Park More Information…

Geotechnical Investigation and Design for Foundation Engineering Works

For years geotechnical practitioners have commented on the failure of clients to appreciate the value of good site investigation and the benefits of obtaining more detailed information. Some of the benefits of a good ground investigation coupled with appropriate experience, analysis and design in foundation engineering projects are potential savings in construction costs, potential for More Information…

Drilled Shaft Instrumentation for O-cell Tests

In this talk the general requirements for O-cell instrumentation will be presented, including the differences in instrumentation required for O-cell bi-directional static load tests to conventional load tests, purpose and numbers of various embedded instruments, parameters that need to be measured, instrumentation for additional geotechnical parameters, calculation of plate movements – single level and multi More Information…

Numerical algorithms for large deformation analysis in geomechanics

Large deformation analysis is very important in some problems of geomechanics. Soft clays experience large amounts of settlements under applied loads and consolidation, for which the small deformation assumption does not result in precise solutions. The large deformation considerations are vital for these problems especially in Australia, since there is a large amount of soft More Information…

Solid Waste Landfill Geotechnics

Solid waste is a particulate material that is analogous to soil in many respects, although with somewhat extreme engineering properties. The presentation concerns the application of geotechnical engineering concepts to solid waste landfill behaviour. A number of applicable geotechnical engineering analysis approaches will be discussed and illustrated. The major topics covered by the presentation comprise More Information…

Hydraulic Containment at Landfill Sites

The world’s deepest continuous trench groundwater barrier wall is currently under construction at the former Newcastle Steelworks site. Contractor Austress-Menard (A-M) was engaged by the Regional Land Management Board (RLMC) to design and construct the barrier wall to reduce migration of contaminated groundwater to the adjacent Hunter River, as part of the remediation strategy for More Information…

Hydraulic Containment at Landfill Sites

A hydraulic containment system of some description is commonly required to abate the offsite migration of leachate and/or contaminated groundwater at landfill sites, and to a lesser extent other contaminated sites (i.e. industrial facilities). In Australia, these systems typically comprise pumping leachate/groundwater from a series of extraction bores to maintain an inward hydraulic gradient, with More Information…

Characteristics of Vacuum Consolidation

Laboratory consolidation tests under odometer conditions were conducted under both vacuum pressures and surcharge loads. The characteristics of vacuum consolidation have been investigated by comparing vacuum pressure and surcharge load induced consolidations. Firstly, regarding the magnitude of consolidation settlement, vacuum pressure induced less or the same settlement as that by a surcharge load with the More Information…

Recent applications of the “square” impact roller

Impact roller technology has been available in Australia since 1985, and it has found use in a wide range of applications. Examples of some of these show the breadth of innovative projects and how the Australian civil and geotechnical fraternity have embraced the concept. More recent applications in the mining sector and on large-scale earthworks More Information…

“Who Needs Constitutive Models?”

Constitutive models are essential in any rational theoretical modelling in geotechnics. How the stress-strain response of soil or rock is represented in these models is usually the key to successful prediction of the behaviour of geotechnical structures. However, the important details of these models, particularly the idealizations that are made, are often poorly understood or More Information…

2005 Poulos Lecture “Soft clay engineering: site characterisation and design of shallow foundations and anchoring systems”

The worldwide trend in the offshore industry is towards ever deeper water, where the seabed sediments mostly comprise normally or lightly overconsolidated soft, fine-grained sediments. This has brought particular challenges in characterising the soil, with much greater reliance on in situ testing, and designing seabed foundation and anchoring systems. The upper 0.5 to 1 m, More Information…