2009 EH Davis Memorial 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

Design Methods for Driven Piles in Sand and Clay

Studies have show that out of all of the components of an offshore structure, the design of the foundations contains the most uncertainty. Although methods of pile construction have made enormous advances over the last 50 years, the advances in pile design have been more muted and acceptance of these advances has been slower. Recognising …more

Liquefaction: Christchurch (Darfield) Earthquake 2010, My Experience and Some Issues

“Liquefaction” is a potentially catastrophic phenomenon in which saturated/near-saturated cohesionless soil loses strength due to increase in pore water pressure under rapid loading (cyclic/static). Liquefied soil may acquire a degree of mobility sufficient to permit movement from meters to kilometres. Although liquefaction has been long recognized, it was more thoroughly brought to the attention of …more

Geotechnical In Situ Testing

Because geotechnical laboratory testing is often expensive, slow, unavailable, difficult to obtain undisturbed samples or only analysing a very small part of the soil, Black Geotechnical have had a focus on in-situ testing for some time. The need for higher quality data has driven Black Geotechnical to not only consider traditional in-situ tools such as …more

Eastlink Tunnels – From Investigations to Design

Decision makers increasing consider tunneling as an option for developing and improving infrastructure. Tunnels can be constructed in many different ground conditions for many different uses. This presentation gives an overview of tunneling techniques, including excavation and ground support systems. This is followed in more detail by a description of the development of the design …more

Anticipating Engineering Properties and Behaviour from Geological Knowledge

Skills in interpreting and understanding the geological origins of soil and rock masses, their defects, fabric and anisotropy are essential in the development of high quality ground models on which our ground engineering decisions are based. Alan’s talk will use case histories to show how important engineering properties and behaviour of the ground can be …more

Jacked Piling in Australia

Jacked piling is increasingly being used in China, Japan and South-East Asia, and was introduced into Australia in 1998. Jacked piles have the advantages of being vibration free, creating minimal noise, being pollution free, having a high operational accuracy, not generating high transient driving stresses and providing a type of static load test as part …more

Geotechnical Work associated with the Construction of MONA

The Museum of Old and New Art (MONA) is a landmark development consisting of almost 10,000m2 of floor area over three levels and is cut into the side of a peninsular on the banks of the Derwent River in Tasmania. The museum building includes an international standard exhibition space, gallery, theatre, administration and an art …more

From Myth to Reality… Liquefaction in the Canterbury Earthquake

The sequence of earthquakes that struck the Canterbury Region over late 2010 and early 2011 has resulted in a tragic loss of life. Those following the tragedy from afar will have seen a stream of photographs and video of collapsed buildings with a sprinkling of images showing rockfall, landslides with flooding and ejected sand from …more

Soil and Rock Logging AS 1726 Geotechnical Site Investigations

The course aims to educate geotechnical/environmental engineers, geologists and geotechnicians who find themselves logging and/or interpreting soil and rock logs in accordance with AS 1726 – Geotechnical Site Investigations. The content assumed that the participants already have a basic understanding of soil and rock logging. The course is particularly relevant to professionals starting their careers, …more