AGS Perth Symposium 2024

Optimizing the Project Life Cycle: The Role of Geotechnical Professionals

The project life cycle is a dynamic process encompassing several stages, including initiation, planning, execution, monitoring, and decommissioning. Each phase is vital to the successful completion of the project, and the integration of geotechnical professionals during these stages can prove instrumental in enhancing efficiency and risk management, mitigating costs, reducing environmental and social impact, bolstering sustainability, and paving the path for future developments.

This symposium aims to elucidate the critical role played by geotechnical professionals by examining case studies and exploring their contributions at various stages of the project life cycle. These stages include:

  1. Desktop Studies
  2. Site Walkovers and Mapping
  3. Ground Models
  4. Planning Investigations
  5. Site Works and In Situ Testing
  6. Laboratory Testing
  7. Analysis and Design
  8. GIS Management of Data
  9. Construction
  10. Monitoring
  11. Closure
  12. Decommissioning
  13. Lessons Learned

Through this symposium, we intend to bring together engineering geologists and geotechnical engineers from the academic, industrial, and governmental sectors. These professionals will share their valuable insights on how the early involvement of geotechnical specialists can make a significant impact on each stage of the project cycle.

The symposium will also serve as a platform for fostering collaboration, encouraging discussions, learning from past experiences, and enhancing the geotechnical profession’s contribution to future developments through the project life cycle.

In light of this, we cordially invite local and national practitioners, academics, contractors, and other interested parties to submit abstracts that align with the symposium’s theme. We encourage submissions that offer innovative perspectives and novel takes on the theme, contributing to a more engaging, forward-thinking symposium. Together, let’s delve deeper into the world of geotechnics and its pivotal role in project life cycle optimization.

Keynote Speakers

Jiri Herza Principal Consultant/Director, HATS Consulting

Moral hazards in the project life cycle

Abstract

Moral hazards refer to a wide range of situations where one party in an engagement takes on risks because they do not bear or do not believe that they bear the full consequences of their actions. These situations have been shown to result in extraordinary costs initially incurred by the other party in the agreement, insurers and then investors, to be ultimately borne by society at large. Besides their magnitude these costs are also spread inequitably across different societal groups.

The governments’ responses to the spread of the COVID-19 virus provide a good example where the imbalance of power and information gave rise to various moral hazards, resulting in unprecedented societal costs and leading to a substantial increase in global wealth inequality.
Due to the disbalance of information, moral hazards often occur in the engagements of professionals providing services in specific disciplines, such as geology and geotechnical engineering. Despite their widespread occurrence and severe consequences, moral hazards are not well recognised by professionals and thus remain largely unmanaged.

My presentation will provide examples of moral hazards emerging at various stages of geotechnical and civil engineering projects, highlighting the detrimental behaviour of the involved parties and the direct and indirect consequences including the increased risks and costs.
Building upon these examples, I will draw wider conclusions and offer strategies to reduce the occurrence of moral hazards in engineering projects. I will also discuss the core obligations of professionals and encourage the audience to exercise individual bravery and maintain high profession and ethical standards in resisting moral hazard situations.

Biography

Jiri is an engineer and scientist with 20 years of international experience in dams, tailings, hydropower and geotechnical engineering including site investigations, field and laboratory testing, foundation assessment, stability modelling, embankment and gravity dam design and risk assessment and rehabilitation of existing dams.

Craig Butterworth

Craig Butterworth Technical Director, CMW Geosciences

Examples from past experience on the influence of the geotechnical engineer during the late design and construction stages

Abstract

Geotechnical solutions almost always involve a number of engineering disciplines. Therefore, communication between parties is key to the successful implementation of design evolution. This presentation will use a number of project examples to demonstrate how the geotechnical engineer can have a key role in the project construction phase. The importance of the Design/Construction Manager in the process will be highlighted through examples of where changes have been successfully and sometimes less successfully implemented.

Biography

Craig has over 30 years’ geotechnical design experience on projects across the world. He has worked in both offshore and onshore sectors and has been involved in a wide variety of project types from inception to handover. He has experience in site investigation and geotechnical design roles on projects including major land reclamation works, deep basements, high rise structures and road/rail projects.
More recently Craig has been Technical Director and on the board of CMW Geosciences, a specialist geotechnical company with a presence in both Australia and New Zealand. Craig is enthusiastic about offering clients practical and efficient geotechnical designs. Whilst comfortable behind the wheel of a finite element model, Craig is a strong advocate of the benefits of engineering judgement and the application of common sense design that supports the practicalities of construction.

Heather Thomson Principal Consultant/Director, SRK Consulting

Tailings Closure Design: Starting with the End in Mind

Abstract

The principle of ‘designing with the end in mind’ is crucial for tailings storage facility (TSF) design. Tailings—waste materials resulting from ore processing—are stored in engineered structures known as tailings dams or TSFs. Unlike water dams, which can be removed at the end of their operational life, tailings dams are to remain in place indefinitely. These facilities are designed for lifespans that extend from hundreds to a thousand years, far beyond the limit of reliable prediction. Given that most mining operations last in the order of decades, the impacts of TSFs far outlast the operational phase of the mine itself. This presentation explores how the concept of closure is integrated into the lifecycle of a TSF. It examines the balance between short-term operational needs and the imperative to develop sustainable landforms which are safe, stable and non-polluting in perpetuity.

Biography

Heather Thomson is a Principal Consultant and Director at SRK Consulting, with over 14 years of experience specialising in tailings engineering. Her expertise spans the design, construction, operation, and review of tailings storage facilities (TSFs). She has a particular interest in TSF closure design and surface water management. Heather is a Chartered Professional Engineer and holds a Master of Engineering Science (Civil) from UNSW.

Discussion Panel

In this symposium, we are bringing together industry experts to share their insights, challenges, and strategies in the complex world of construction through a panel discussion, titled: Constructing Success: Collaborative Dialogue among Consultants, Contractors and Clients!

Panellists include Alison Jennings from GHD, Wayne Leslie from Georgiou  and Matt Lardi from Public Transports Authority.

Programme

08:00-08:30 — Registration

08:30-08:35 — Opening Address

08:35-10:20 — Session 1
  • Keynote Speaker: Jiri Herza (HATS Consulting)
    “Moral hazards in the project life cycle”
  • Hugo Acosta-Martinez (BG&E Resources)
    “Applications of life cycle assessment (LCA) in geotechnical engineering”
  • Michael Page (Worley Consulting)
    “Bedrock Distribution from Scarp to Sea: new insights from boreholes and palynological data between Armadale and Alkimos, Perth Basin”
  • Lily Nairn (BHP)
    “Managing the public and pit; mining a bi-secting infrastructure corridor”

10:20-10:40 — Morning Tea

10:40-10:50 — Platinum sponsor presentation: Probedrill

10:50-12:35 — Session 2
  • Keynote Speaker: Craig Butterworth (CMW Geosciences)
    “Examples from past experience on the influence of the geotechnical engineer during the late design and construction stages”
  • Su Kwong Tan (WSP)
    “Constructing causeway bridges: navigating known and unknown geotechnical challenges on soft clay”
  • Muhammad Shazzad Hossain (UWA)
    “Potential of Repurposing Decommissioned Subsea Flowlines and Pipelines to Dynamically Installed Anchors”
  • Babak Hamidi (Menard)
    “The application of ground improvement in Australian ports”

12:35-13:20 — Lunch

13:20-15:05 — Session 3
  • Keynote Speaker: Heather Thomson (SRK Consulting)
    “Tailings Closure Design: Starting with the End in Mind”
  • Mark Orr (Worley Consulting)
    “Kununurra Diversion Dam Abutment Strengthening – Case History”
  • Stefano Rotatori (WSP)
    “CFA Piles in Perth Sands: Design and Construction”
  • Changbeom Shim (Curtin University)
    “Machine Learning-based Visual Exploration for Slope Monitoring”

15:05-15:25 — Afternoon Tea

15:25-17:00 — Session 4
  • AGS Sponsored Research Project: Doug Stewart (FSG Geotechnics and Foundations)
    “Long-Term Settlement of the Alexander Library Building and Other Structures in WA”
  • Panel Discussion
    “Constructing Success: Collaborative Dialogue among Consultants, Contractors and Clients”
    Panellists include:
    • Alison Jennings (GHD)
    • Wayne Leslie (Georgiou)
    • Matthew Lardi (Public Transport Authority)
  • Closing Remarks

17:00-18:00 — Canapés and Drinks

Registration

Registration has now closed.

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.