Case Studies

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Backflow Prevention Device

Backflow Prevention Device

Western Creek drains into the Brisbane River at the John Oxley Centre after meandering through the flood prone Brisbane riverside suburbs of Milton and Paddington. Much of the flooding in the suburbs is due to backflows of water from the Brisbane River along Western Creek causing millions of dollars in damage during major flood […]

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Hampton Court Shoring Wall

Hampton Court Shoring Wall

Sovereign Island has been reclaimed using dredge spoil from the Coomera River and Gold Coast Broadwater.  The typical geotechnical profile for residential house lots includes several metres of loose and overlying layers of loose and dense sand to a significant depth. Houses are also built using the largest footprint possible which generally sees them […]

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Bridge Foundation Piles Duck Creek

Bridge Foundation Piles Duck Creek

The bridge over Duck Creek is typical of many small timber rural bridges that are dotted around the country in need of replacement. The new bridge was designed as a double span reinforced concrete deck supported on concrete bored piles. The bored piles were to be socketed over 2m into the underlying DW Andesite […]

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Bridge Foundation Piles Wunulla Lane

Bridge Foundation Piles Wunulla Lane

The new bridge spanning Kilcoy Creek at Wunulla Lane was part of the 2013 NDRRA flood restoration program to replace the old timber bridge washed away during the 2013 floods. Although only a single span bridge in a rural setting, the new bridge was required to withstand flood velocities of up to 4m/s and […]

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Toombal Bridge Repair

Toombal Bridge Repair

Built in the early part of the 20th century on a foundation of timber piles, the Toombul rail bridge at Kedron Brook is a vital link for all passenger and freight trains entering Brisbane from a northerly direction. It is a major artery traversing the Kedron Brook waterway across Shultz canal which is subject […]

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Slope Stabilisation – Noosa

Slope Stabilisation – Noosa

Park Road at Noosa on Queensland’s Sunshine Coast is the gateway for 1 million visitors per year to the spectacular Noosa Heads National Park. In the mid 1990’s, a major rain event caused sections of the road to slip and temporary remedial works were undertaken to attempt to stabilise the slope. However, further investigative […]

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COVA Commercial Development – Basement Uplift

COVA Commercial Development – Basement Uplift

The COVA re-development on the Isle of Capri near Surfers Paradise is a modern commercial complex offering boutique shopping, gourmet food and beverages to local residents and tourists. The project has revitalised a once thriving retail hub that became run down and tired with age.

To maximise the land use and to comply with modern […]

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51 Sylvan Road – Micropile Underpinning

51 Sylvan Road – Micropile Underpinning

The residential unit complex at 51 Sylvan Road, Bribie Island was constructed on a 5m deep layer of material described by the geotechnical report as “Loose Sand”. The result of a rising and falling water table within the loose sand layer manifested itself as significant settlement and damage to front corner of the structure.

The […]

Under Pinning

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Underpinning describes the process of improving or increasing the capacity of an existing structures foundation. This can be achieved by the introduction of grout or more commonly by extending the foundation in depth, typically by the introduction of piles so a structure is supported on a more supportive stratum.

Underpinning of a structure maybe required […]

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Soil Nailing

Soil Nailing

Soil nailing is an efficient, effective and economical method of earth reinforcement, which allows a controlled improvement of the natural stability of the soil. Soil nails provide friction, shear and tension strength in loose materials, so that when a site is completed it transforms from many independent objects by joining and combining the site […]

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Cement Grouting

Cement Grouting

Cement Grouting
Pressure Cement Grouting, is a grouting process that fills pores in granular soil or voids in rock or soil, with grout injected as a flowable medium. Depending on the application, cement grout is injected under pressure at strategic locations via a single or multiple ports. It is essential that the particle size of […]

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Grouted Shoring Wall

Grouted Shoring Wall

Grout retaining walls are created from grouted soil columns utilising high pressure grout techniques, mini jet and jet grouting. These grout columns combine to produce panels which are typically installed to a design specification to create a gravity retaing wall. Grout walls can be created in all geotechnical conditions however they are specifically suited […]

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Soldier Piles

Soldier Piles

Soldier piles and lagging walls is an earth retention technique used primarily for temporary excavation support. These shoring walls are typically constructed by installing steel beams vertically (soldier piles), which are either driven or drilled at regular intervals around the planned excavation prior to excavation beginning.

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A Frame Wall

A Frame Wall

One of the many unique applications for micropiles is where they are utilised together to establish a network of piles referred to as reticulated micropiles.

Reticulated micropiles are typically utilised as components of a reinforced soil mass, which is used for stabilization and support, as examples unstable slopes or in areas where additional capacity needs […]