Masterclass focused on Aspects of Piling (FULL)

AGS Queensland invite you to a Piling Masterclass. The event will be moderated by Stephen Buttling, with technical presentations provided by Martin Larish and David Klingberg. Each presentation will be followed by a Q&A session. There are only 20 spaces available for this event which are expected to fill quickly, so if you wish to attend please complete the attached registration form.

Programme:

Bored Piles – Potential Risks and Best Practice in Australia

Martin Larish, Principal, ML Consulting

Deep foundation techniques have emerged over the last few decades and many new technologies were introduced to install piles and embedded retaining walls more efficiently.

However, the conventional bored pile, installed by conventional rotary drilling techniques is still one of the most common, popular and reliable products to design and install deep foundation elements in Australia and around the world. Bored piles are particularly suitable for the transfer of high vertical loads, horizontal loads and bending moments. It is important that the finished product strictly complies with the design requirements to achieve the specified outcome. Considering that bored piles can be more than 100m deep and that their diameters typically range between 0.45m and 3.0m, these requirements can vary significantly from project to project and it is important to understand the implications of non compliance caused by incorrect design assumptions and/or by the pile installation process on site. The latter is not limited to the pile excavation itself but also to the entire pile construction process including the correct use of drilling fluids or casings and the placement of reinforcement cages and tremie concrete.

The presentation will introduce the major aspects of the design and installation processes of (large diameter) bored piles – highlighting general advantages, disadvantages and risks as well as the influence of installation techniques on the pile load capacity and the most common areas of concern.

The seminar will also highlight the most common techniques to support the pile excavation with a particular focus on the recent developments in the field of drilling support fluids and their coverage in the Australian Piling Code. The basic principles between bentonite slurries and polymer based drilling fluids will be explained and the potential effects of the different drilling fluids on the load capacity of piles will be discussed as well. How can such effects be quantified and how are they covered in AS2159-2009 and geotechnical risk assessments in general?

The talk will close with an introduction of the most common pile load testing methods for bored piles and it will discuss the effectiveness, cost, suitability and limits of the introduced methods.

About Dr Martin Larisch

Dr Martin Larisch is the Principal of his own, independent geotechnical consultancy in Brisbane (Australia) and an Adjunct Associate Professor at Geotechnical Engineering Centre at The University of Queensland. He obtained his University Degree in Civil Engineering in Germany and has completed his PhD at the UQ in Brisbane on the behaviour of drilled displacement piles in cohesive soil conditions.

He is a Chartered Professional Engineer with Engineers Australia and has published more than 20 technical papers for international and national seminars, conferences and journals as well as one book chapter about piling in soft soil conditions.

For the last 15 years he has worked for some of the leading piling companies in Germany and Australia and was heavily involved in the design, tendering process and the delivery of numerous piling and ground improvement projects across Australia, New Zealand and Germany. Throughout his career Dr Larisch has been exposed to most areas of piling, ground improvement and shoring techniques as well as in the practical implementation of new ground improvement and piling techniques.

He is particularly interested in pile installation effects, drilling fluids, concrete technology for deep foundations, geothermal piling, process improvements and geotechnical risk assessment & management.

Non-destructive, Dynamic Testing Techniques  –  Current State-of-the-Art

David Klingberg – Piletest Manager, Wagstaff Piling Pty. Ltd.

Dynamic testing techniques have been in use throughout the world since the early 1970’s and  came to prominence with the advent of the personal computer which allowed the results of the computational effort to be made available in real time.  Since those early days, many improvements and refinements have been made to the data collection techniques and analysis methods as a result of the efforts of many different organisations throughout the world.  This presentation will take a look at the current state-of-the-art of the various methods and will introduce the latest of technologies – Thermal Integrity Profiling (TIP).

The presentation will also address the use of the testing methods in relation to the current Australian Standard – AS2159-2009 – Piling: Design and Installation.

About David Klingberg

David has worked in the piling industry for more than 25 years, primarily involved in aspects of pile design and dynamic pile testing.  After graduating with distinction in Engineering, he worked for Queensland Rail before joining Wagstaff Piling in February 1989.

David’s role as Piletest Manager for Wagstaff Piling includes tasks such as training engineers in all forms of dynamic pile testing techniques, as well as supervision and review of all pile testing data within the company.  His position also includes the role of Design Manager for the Wagstaff Piling Brisbane office.

David has authored many papers for international conferences on stress wave analysis as applied to pile testing and has been an active member of the Australian Standards committee for  AS2159 – Piling – Design and Installation.

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Engineers Australia members participating in AGS technical sessions can record attendance on their personal CPD logs. Members should refer to Engineers Australia CPD policy for details on CPD types, requirements and auditing guidelines.