18A Iris Place, Acacia Ridge, Brisbane QLD 4110 PO Box 31, Acacia Ridge DC QLD 4110 07 3713 4900
East Coast Group of Companies Menu
  • Home
  • About Us
  • Our Companies
  • Our Services
    • Structural Engineering
    • Soil Testing & Design
    • Timber Piles
    • Steel Screw Piles
    • Retention Piles
    • Bored Concrete Piles
    • Anchoring
    • Specialty
  • Areas We Serve
    • Sunshine Coast, QLD
      • Soil Testing & Design
      • Timber Piles
      • Steel Screw Piles
    • Gold Coast, QLD
      • Soil Testing & Design
      • Timber Piles
      • Steel Screw Piles
    • Brisbane, QLD
    • Regional Queensland
    • Northern New South Wales
  • Gallery
  • Blog
  • Contact Us
Our Services

Specialty Construction & Engineering Solutions in South East Queensland, Brisbane, Gold Coast, Sunshine Coast, & Toowoomba.

Underpinning, pile load testing, difficult access piling and transmission line foundations.

Email usCall 07 3713 4900

Underpinning & In-situ Support

In situ support, or underpinning, is used to stabilise and strengthen a structure’s existing foundations during construction or renovation works. There are various reasons why this might be necessary, such as the original foundation not being strong enough to support any additional building processes.

The use of the structure may also have changed, creating the need for extra support, while the surrounding soil might also have altered over time, affecting the foundations. During the underpinning process, the foundations will be extended to enable the additional support structures to be put in place — either in depth or by breadth.

Sometimes it can be more economical to strengthen the existing foundations rather than create new ones and the East Coast Group of Companies can talk you through your options.

Underpinning

Underpinning Project Examples

Underpinning swimming pools
Underpinning swimming pools on deep alluvial soils. This pool had rotated because of a nearby deep, unshored sewerage excavation after pool construction. The pool was resupported utilising timber piles.
Steel screw piles supporting an existing pool
Steel screw piles were selected to support an existing pool that had rotated adjacent to a creek in Mount Gravatt.
Redevelopment of a site
Redevelopment of a site incorporating an underground car park on poor quality fill is made easy using a combination of horizontal and vertical piles to underpin the existing building next door.

Pile Load Testing — Peace of Mind

Pile load testing is the most efficient and effective way to determine a system’s behaviour under defined load conditions and is used to discover the maximum operating capacity of a particular application. It can be completed relatively quickly and offers increased quality assurance for your company.

A range of pile load testing services are available at the East Coast Group of Companies, so just talk to our team to find the most suitable option for you. We guarantee quality and reliable services, and will always ensure that you receive exactly what you need for the best price.

Static tension load test
Static tension load test of raked piles for transmission line construction at Millmerran, Queensland.
Load testing tension screws
Load testing tension screws, Gooding Drive, Carrara.
Unimog pile driver
Unimog pile driver used to perform dynamic pile load testing on steel screw piles at the “Power House” Redevelopment, Lamington Street, New Farm.

Difficult Access? Remote site? We can help!

If you require construction services in difficult to access areas in South East Queensland, then the East Coast Group of Companies has the perfect solution. All of our East Coast Piling and Drilling equipment have been designed by our expert engineers and manufactured by our fabricators specifically to operate in tight spaces.

We guarantee a quality service with our selection of equipment that is manufactured to the highest standard and ideal for use on all types of projects. Whether your site is close to retaining walls or located in a remote area, we can help.

Mercedes Unimog pile driver
Mercedes Unimog Pile Driver working with limited headroom and restricted access inside an existing factory.
Screw piling the Power House redevelopment
Screw piling the “Power House Redevelopment”, Lamington Street, New Farm.
400kN piles inside a factory
400kN S.W.L piles inside a factory in Newstead. Average depth 23 metres.

Transmission Lines Foundations

As an innovative business with years of experience, the East Coast Group of Companies can install electrical transmission lines foundations efficiently, working to strict safety protocols. From the initial project design to the manufacture of parts and the installation process, our expert team will ensure a superior job. Working for Powerlink in Queensland (Belmont and Millmerran), East Coast Piling and Drilling designed and constructed the first electrical transmission line foundations that utilised screw piles.

We offer a range of services throughout South East Queensland and use only the best available materials in all of our work. That means you can always rely on us for delivering reliable products and services of the highest standard.

Transmission line screw pile foundations
East Coast Piling and Drilling designed and constructed the first two electrical transmission lines foundations ever to use Screw Piles, for Powerlink in Queensland at Millmerran and Belmont.
Four screw piles
Each tower leg utilised four Screw Piles specifically raked to resist the design loads.
Nominated raking angles
Templates were prefabricated at the nominated raking angles to ensure accurate quality control during installation.

Call us today on 07 3713 4900

Find out more about our engineering services in Southeast Queensland.

Contact us
East Coast Group of Companies

Civil, Structural, Geotechnical & Piling Services since 1994.

07 3713 4900

Quick Links
  • Home
  • About Us
  • Our Companies
  • Our Services
  • Areas We Serve
  • Gallery
  • Blog
  • Contact Us
Contact Information
Phone
07 3713 4900
Piling and Drilling
manager@eastcoast-geotech.com.au
Geotechnical & Structural
manager@eastcoast-geotech.com.au
Address
18A Iris Place, Acacia Ridge, Brisbane QLD 4110
Postal Address
PO Box 31, Acacia Ridge DC QLD 4110
Opening Hours
Monday7:30 am – 5:00 pm
Tuesday7:30 am – 5:00 pm
Wednesday7:30 am – 5:00 pm
Thursday7:30 am – 5:00 pm
Friday7:30 am – 5:00 pm
SaturdayClosed
SundayClosed

© 2026 East Coast Group of Companies. All rights reserved.

Terms of Use · Privacy Policy