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An Introduction to GEOHAZARDS: TW0539

Dr Terry Wiesner
Formal CPD
1 Hour - FORMAL
Duration: 00:47:41
The “hazards” discussed in this lecture include slope instability, reactive soils, filling/very loose ground, contaminated sites, erosion and sediment loss, earthquakes, mine subsidence ,acid sulfate soils and saline aggressive soils.
Recognizing the need for geotechnical investigation is outlined as being a critical step in the building process.  Sufficient information on subsurface conditions is needed on a site so that decisions can be made as to the feasibly of a proposed project and the likely cost.
This course is essential in understanding the importance of recognizing the need to investigate subsurface conditions to minimize the risk of future unforeseen problems in development.
  • Develop an understanding of how Geohazards affect site conditions, site related requirements and limitation for a project.
  • Understand the basic types of Geohazards applicable to sites around Australia.
  • Appreciate the services provided by a specialist Geohazard consultant and how these services can assist the overall project outcome.
  • Understand what remedial activity is possible to overcome common Geohazards, allowing site development.
  • Appreciate how location and history affect the potential Geohazards on any particular site irrespective of its general location.

Recognised by the NSW ARB, ARB of Victoria, BA of Qld, AB of WA, Work Stds Tas, APB of SA, PIA, AILA & BDA



    Terry Wiesner was Managing Director of Douglas Partners Pty Ltd.

    He graduated with 1st Class Honours from Sydney University and proceeded directly to his doctorate completing a thesis on “The Behaviour of Piled Raft Foundations” in 1977.

    He then worked for Sinclair Knight & Partners in a diverse range of areas of engineering consulting before joining Ground Test Pty Ltd which, at that time was part of the Frankipile Group. A period of almost 2 years was spent at the head office of Franki International in Belgium before Terry returned to join D J Douglas & Partners, which was formed to purchase Ground Test from Franki.

    Subsequently he has worked for Douglas Partners primarily in Sydney as a geotechnical consultant. For about 8 years a part time responsibility was General Manager of Fugro Douglas Consultants, a joint venture between Fugro of the Netherlands and Douglas Partners for carrying out geotechnical investigations and consulting for major offshore oil and gas structures.

    Terry was appointed a Director of Douglas Partners in 1987 and Managing Director in 1996. He has since retired.