Sourcing engineering in remote areas such as Matauri Bay in the far, far north can be challenging. Employing the services of a multi-discipline engineering practice such as EDC to build a new local school provided tangible benefits. To start, EDC Geotech and Civil worked to break in the land and subtly modify exisitng land formation. Open classrooms with lots of glass to maximise light presented a structural engineering challenge in such a high wind zone, whilst EDC’s Environmental team introduced storm water quality treatment and flowrate buffers in the form of vegetated swales and a wetland detention pond.

EDC provided a seamless one-stop-shop for Civil, Geotech, Structural and Environmental engineering (including some fire design). All involved were rewarded when the school received a 5-star ‘Greenstar’ rating – the first in NZ to do so.

Fire stations are strategically located and require council, the private sector and the local community to work cohesively throughout. For the Te Atatu fire station, this process was greatly assisted by employing a multi-discipline engineering consultancy such as EDC.

Geotech investigation confirmed soft soils, ensuring the right foundations were set. The design provided structural engineering challenges, whilst large areas of impervious surfaces needed for heavy vehicles and staff parking, required a collaborative effort from EDC’s civil and environmental teams, who incorporated large areas of porous parking and rain gardens to mitigate storm water run-off.

EDC was able to provide a one-stop-shop for civil, geotech, structural and environmental engineering ensuring a seamless, cost effective and proactive approach throughout.


Having enlisted EDC’s multi-discipline engineering experience previously, this customer was confident EDC could handle the challenging engineering required to realise his cliff top dream home.

EDC’s geotech slope stability analysis allowed EDC’s Geotech, Civil and Structural teams to design the substantial retaining, including 8.5m deep barrier piles supporting the 3-4m segmental block wall and pool. The Civil and Structural teams collectively managed a detailed submission to divert an existing sewer and install a private stormwater detention and reticulation outfall into the cliff. Key design included: suspended concrete slabs, pool and an impressive 3 level internal steel and glass curtain feature.

By working collaboratively across all key engineering disciplines, EDC provided a cost effective and streamline solution to this inspired cliff top home.


Structural, Geotechnical and Civil design of three residential structures varying from 2 to 4-stories on a 1500m2 site.


  • Heavy weight concrete structures on an area prone to liquefaction.
  • The poor soil conditions at this site meant the building had to be founded on piles.
  • Tight deadlines for delivery resulted in a staged consent.

Challenges met: 

  • Achieved a feasible and cost effective foundation and structural system.
  • Assisted the contractor in meeting the programme for delivery.


The building was a test to the EDC teams, regarding a fast paced design and construction.  Ultimately, we worked with the architect to achieve the best possible outcome for the client

61 Lot Subdivision undertaken in 2 stages.


  • Heavy rains, site flooding during winter, dust production in summer.
  • Variable ground conditions.
  • Long term construction monitoring.
  • Stormwater control.

Challenges met:

  • EDC collaboration minimised issues due to environmental conditions.
  • Identified variable ground to reduce risk of delays.
  • Continuous monitoring undertaken during the construction period.
  • Open approach with Whakatane DC and public whilst respecting privacy.

Located on a very steep hillside this old house was badly damaged by earthquakes and a partial rebuild of the ground floor, and new roof and lining repairs at first floor level, were required. EDC provided structural engineering input and geotechnical advice on rock stability and retaining walls.

Incorporating new structural elements into the existing was particularly challenging and required close coordination with the contractor and design team. EDC designed portal frames to provide both temporary support of the upper floor and permanent vertical and lateral support. The steel portal frames were designed to be small enough be manhandled into place, and to fit inside the wall cavity thus being hidden permanently. A number of steel splices were required.

To provide a heated concrete floor, EDC designed LVL timber framing to support a screed layer.






  • Multi-Discipline: Scarborough Road, Christchurch