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You are here: Home » Steve Bowling Contracting » Whau Valley Retaining Wall

Whau Valley Retaining Wall

GHK Piling was engaged to build a new retaining wall to replace a failing retaining wall without undermining the house or the driveway. The retaining wall is 36 metres long and 2m high.  The wall was constructed with 6m 350 SED poles drilled 3.6-4m into the ground with a minimum embedment of 2.0 m into firm sandstone.

The project was challenging because of the restricted access to the site, thus all of the work had to be completed with a 6T excavator. It was important to have an excavator operator who was highly skilled at drilling to drill rock with a small machine without doing damage to the gear. All of the unloading of materials had to be done at a laydown area at the top of the site behind the house & then moved down a 30 metre track to the retaining wall site using the 6T excavator.

The building of the new wall had to be completed in stages as not to completely undermine the existing retaining wall. We demolished the existing retaining wall in sections and rebuilt the new wall prior to commencing demolition on the subsequent section of the wall. Full demolition or collapse of the wall. Full demolition or collapse of the original retaining wall would have placed the house & driveway at great risk of movement or slippage.

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Phone: (09) 435 2119
Fax: (09) 435 2469
9-11 Hewlett Street, Whangarei
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KEY PERSONNEL

Dean Collinson, General Manager
Ben Bowling, Construction Supervisor
Steve Bowling, Managing Director
Cameron Lornie, Projects Engineer
Brett Snell, Construction Supervisor

Recent Projects

Riverside One Apartments

One Riverside Apartments

Tarewa Park Wastewater Storage Tanks

Tarewa Park Wastewater Storage Tanks

Whau Valley Retaining Wall

Whau Valley Retaining Wall

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What Our Customers Say

  • ““To their credit, the staff of Steve Bowling Contracting worked with the MOE/School (and specific student’s needs), the design team and us as project managers to deliver a project we are all immensely proud of.” Trevor Griffiths – Director, Griffiths and Associates, May 2015 Read more...
  • “The project was completed on time and the playing surface has been well received by our hockey community...” Grant McLeod – CEO, Northland Hockey Association – 30 October 2015Read more...
  • "I just want to say how happy we are with the job you did. We were impressed with the way the guys worked and presented themselves on the job and how they were prepared to deal with my requests during it." Wayne McKeanRead more...

Contracting Services

  • Reinforced Concrete Structures
  • Precast Installation and Erection
  • Concrete Driveways
  • Concrete Repairs
  • Demolition
  • Site Works, Excavation and Drainage Services
  • Retaining Walls
  • Bridge Construction, Upgrades and Repairs
  • Guardrails
  • Specialist Industrial Coating and Epoxy Systems
  • Industrial Shutdowns
  • Seismic Upgrades & Strengthening

Systems & Compliance

Bowling Infrastructure Group considers it imperative that all staff return home to their families fit and healthy at the end of each day, the impact of our works on the environment is minimised, and that our projects are constructed to specification, … More info...

Business Units

  • Steve Bowling Contracting
  • SSP Engineering
  • NPM Remediation
  • NPM Construction
  • GHK Piling

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