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Geotechnical Engineering Services

Slope Stability Assessment

Slope stability is an important determinant of whether ground conditions are suitable to build on, and the type of structures permissible within a nominated building envelope.

Our process for the slope stability assessment involves:

  • Reviewing site information, including photographs
  • Site visit and walkover
  • Application of professional methodologies
  • Landslide risk determination and report
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When is it required?

The aim of a slope stability assessment report is to assess the potential risk of slope instability or landslide for a proposed development in its existing and post developed state.

Note that our slope stability assessment is a qualitative risk assessment only. It is not to be seen as a slope stability analysis or design report, nor is it intended to quantify a geotechnical factor of safety or certify the design as provided by the client.

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What’s included?

A report on the determined landslide risk is delivered, reflecting the results of the methodology adopted by STA Consulting Engineers. This incorporates:

  • Guidelines developed by the Australian Geomechanics Society (AGS), Landslide Risk Management, Volume 42 No.1, March 2007
  • Landslide Frequency Assessment in accordance with the report A Method of Zoning Landslide Hazards, prepared by MacGregor and Taylor, 2001
  • A review of existing hazard mapping (where available), aerial photographs, and various published information to assist in identifying past activity
  • A walkover survey to record surface evidence of slope instability and to assess the ground slope(s) and general site conditions

Experts in local geology

We have over 30 years’ soil testing experience and complete hundreds of geotechnical investigations every year, giving us a deep understanding of local conditions throughout Queensland and NSW.

NATA lab

With our own NATA accredited laboratory, we thoroughly test and analyse materials. Because we have full control over the testing process, we produce extremely reliable data for every project.

Regional soil profile maps

With decades of data across hundreds of thousands of soil tests, we’ve developed local and regional profiles of soil compositions, along with wind ratings, bushfire assessments, and other ‘site estate specific’ data.

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One engineer for all your needs

Every building project is different, requiring a combination of engineering disciplines. From bottom to top, our engineers can work on soil testing and foundations, all the way up to frame and roof truss design and even inspections. We believe these shouldn’t be thought of as separate, unrelated services.

Whether you’re renovating, extending, building a brand new home, or putting in a pool, you can gain significant benefits from understanding (in advance) the full range of engineering services you might need — and from using the same engineer for all these services.
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Key advantages of integrated services

STA is a one-stop engineer with a service range that delivers three key advantages:

  • Save time and money

Pre-planning your engineering needs means you won’t have to keep re-booking an engineer when you need a particular service. It creates efficiencies that cut service times and save you money by pulling together the services you’ll need, at a lower overall price.

  • Enjoy engineering continuity

With all your engineering done by a single organisation, your consultants tap into a deeper knowledge of the site and the project, which leads to high quality outcomes, with more opportunities for innovative solutions.

  • Less risk, more reliability

While STA always takes legal responsibility for its engineering designs, an up-front engineering services package makes it easier to trust our work with a strong mutual commitment, and reduced risk of potential interruption or delay.

How it works

Engineering consideration – We help you think about your project in engineering terms. What specific services might you need?
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Packaged plan – We develop a plan that packages up all the engineering services you need for your individual home or build project.
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Prescheduled services – With each service pre-scheduled, we can work more closely with you over the life of the project.
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Explore our engineering services

Whether you’re a builder, developer, architect or owner, STA has the size and range to cover every possibility, with a team of experts in every engineering specialty. Explore more specific info on:
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