We investigate land to de-risk construction projects

By applying our local knowledge and technical expertise we provide clients with options based on real understanding of the local conditions so they can confidently develop a site to their requirements. This ensures their asset is protected against the geotechnical risks that apply, and that development can be optimised to suit the actual (not assumed) ground conditions.

Results from a geotechnical investigation could be the most important information you get when developing a site

Pre-Purchase Inspection

Helps smart purchasers make informed decisions on whether to purchase a site

What's Involved?

We review historic information held on our extensive database as well as council hazard information. In addition, a visual appraisal by one of our locally experienced and trained professionals is undertaken while we discuss your development plans. For greater assurance we can also confirm any issues with simple ground testing.

Helps You:

  • Avoid committing to an expensive build with unexpected complexities
  • Identify how straightforward or complicated a build may be
  • Select from a list of potential sites being considered

'Good Ground' Check

Confirms if a standard foundation can be used

What's Involved?

Subsurface investigation using a Scala penetrometer and hand auger in accordance with NZS3604 standard. Results are presented in a basic letter report so you can proceed construction with confidence.

Helps You:

  • Verify that the ground conditions are suited to standard foundations or whether your foundations need to be specifically designed
  • Understand the type of ground that supports your building or investment
  • Avoid unnecessary cost and delays if completed at the early stages of development
  • More easily obtain Council building consent and code compliance signoff

Geotechnical Investigation

When it’s worth knowing a little bit more about your ground conditions

What's Involved?

Subsurface investigation using a combination of investigation techniques that is specifically tailored to your site, development intentions and budget. This suits more complex sites where natural hazards may be present or larger projects which comprise deep excavations or the subdivision of land. Investigation results and recommendations are presented in a comprehensive geotechnical report.

Helps You:

  • Understand in detail the type of ground that supports your development
  • Identify and assess land instability and other natural hazards that may exist on your site
  • Select the optimum foundation, retaining wall or remedial solution for your conditions
  • Avoid unnecessary cost or delays in construction due to unforeseen ground conditions
  • Inform your designer and structural engineer so that they can progress designs appropriately
  • More easily obtain Council building consent and code compliance signoff

Commercial Investigation

Suitable for large-scale developments and seismic strengthening upgrades or where specific natural hazards need to be considered.

What's Involved?

We carry out a comprehensive subsurface investigation involving a combination of investigation techniques that are specifically tailored to your project. Results are presented in a comprehensive geotechnical report.

Helps You:

  • De-risk construction projects
  • Understand in detail the type of ground that supports your development
  • Select the optimal foundation or retaining wall design for your conditions
  • Help inform your structural engineer or others on detailed design of buildings, earthworks or seismic strengthening upgrades
  • Avoid unnecessary cost or delays in construction due to unforeseen ground conditions
  • Obtain Council building consent and code compliance signoff

We provide design and producer statement signoff (PS1) by chartered geotechnical engineers for:

  • Retaining walls of all types, including anchored retaining walls
  • Slope remediation, ground anchors and reinforced earth structures
  • Shallow foundations such as strip footings, slabs or rafts
  • Driven and bored piles for single and multi-storey buildings
  • Ground improvement works
  • Seismic strengthening upgrades
  • Peer reviews and expert witness

We supervise construction and issue producer statements (PS4) signoff by chartered geotechnical engineers for projects of all scales, including:

  • Subgrade inspections
  • Earthworks certification (NZS4401/Schedule 2A)
  • Anchor testing and acceptance
  • Testing and verification of pile foundations
  • Technical Specifications and Schedules
  • Engineer to the Contract and Engineer's Representative

We have in-depth knowledge of the various natural hazards present in Otago, such as:

  • Landslide assessment and remedial design
  • Alluvial fan and debris flow assessment, modelling and mitigation works design 
  • Rockfall modelling
  • Liquefaction assessments and CPEng signoff as required by council regulations
  • Flood assessment and modelling

 

 

We undertake engineering assessment of quarries and mines of all sizes to keep them operating safely. This includes:

  • Quarry safety reports including safe working practices and industry regulations
  • Detailed site mapping and stability analysis
  • Advice on excavation profiles, slope angles and bench heights
  • Quarry expansions
  • Rock quality investigations
  • Mineral exploration