Retaining Walls, Soil Stability and Seismic Systems | New Zealand

 

Retained Earth – Global Stability

Retained Earth™ specialises in retaining wall construction, repair and maintenance. We are an experienced geotechnical construction company that works within the residential & commercial building, mining and civil infrastructure markets.

Retained Earth™ work intimately with local and international suppliers, partners and clientele through our extensive, collaborative network, without losing touch with agreed expectations and standards.

Retained Earth™ assesses, and remedies, all earthquake-prone structures. Besides our expertise in retaining structures and products, we also offer seismic, strengthening rehabilitation, structural and architectural expansion joints, and other construction systems and components that are working on public bridges and high-specification venues such as hospitals and schools as well as residential housing units.

 

 

 

CELL WALL product page

 

Retained Earth™ supply, install, repair or maintain;

• mechanically stabilised earth (MSE) walls
• reinforced earth walls
• reinforced soil structures (RSS)
• mass gravity walls such as gabion units or gravity blocks
• concrete sleeper walls
• cantilever retaining walls
• segmental masonry block walls

As shown above, Retained Earth™ offers a comprehensive and diverse supply, install and maintenance package for Residential, Civil, Mining and Public Infrastructure Retaining Wall and Earth Stabilisation projects.

 

See our expansion joint category search for further detail

REpairing Retaining Walls, Arches, Bridges and Homes| North and South Islands | New Zealand

Our REpair department serves to rectify common issues with ageing bridge & retaining wall structures, bridge expansion joints and deck seals, buried arches, culverts and pipes. And as the worlds’ infrastructure ages, there is an integral need for a company that can deal with the complexities surrounding remedial works on retaining structures, bridges, tunnels & water services on all scales, large or small.

REpair of ageing civil and residential structures is something that separates us from other contractors.

The difference between the traditional geo-contractor and the operational capacity of retained earth is that we operate in both small-scale residential and large scale commercial. We are content in bringing superior levels of service across the board.

A bridge is just as important as your home. Therefore, we apply the same level of expertise across all projects — regardless of the size of the job or contract value.

We remedy critical failures such as overturning or sliding, rupture, cyclic fatigue, mechanical disturbance, water-ingress issues such as concrete cancer & scour (soil loss through weather/ water), subsidence, concrete panel structural or connection-point failure, general cleaning and maintenance including anti-graffiti treatments, acid sulfate reactivity, sealing and general surface treatments.

REpair of civil structures is of utmost importance. retained earth have the know-how to complete technical remediation of existing structures.

retained earth are qualified to also carry out underpinning and rectification of structural defects through methods of remediation & prevention; extending intended design life and reinstating structural integrity to existing bridge abutments & components, grade separations, arches, culverts, and other systems of retention and slope stabilisation.

Have a wall that is leaning forward? Repair Your Retaining Wall

Modes of failure vary when looking at repairing a retaining wall. Depending on the type of retaining wall, the approach to repair is best decided by either an experinced geotechnical engineer or an experienced retaining wall specialist.

The beginning of failure. This retaining wall, although small, is not capable of retaining the soil behind. This is made worse by having to also hold up the fence above.

As most retaining walls in Auckland are made from timber, they are typically a cantilever system which utilises vertically-placed posts or sleepers to hold the retained embankment. There are mainly three types of failure with timber sleeper retaining walls; rotation, corrosion (rot and termite damage) and tree roots.

Rotation, in this case due to tree roots, also affects concrete block retaining walls.

Following is a before and after repair job that we carried out. The original retainer, although built with treated pine, was termite ridden and rotten from moisture/ dampness. This was removed and replaced with a smooth, off form grey concrete sleeper wall which uses galvanised steel beams.

Before…

…After

The replacement retained earth sleeper wall also featured our heavy duty fence brackets to allow for rapid fence installation.

Contact retained earth for more details.