We move 'mountains'
by optimising geotech, earlier.

let's talk

© McConnell Dowell Constructors Ltd

our expertise

We start each problem from first principles, assess what is to be built and study how the ground will respond.

value engineering / optimisation

tunnelling

ground improvement

slope engineering

deep basements / foundation

temporary works

about us

We approach every problem from First Principles to really understand the ground  and anticipate how it will respond to what is to be built.  That gives greater certainty. For us – and for our clients. Want to know more about Andy O’Sullivan?

Andy

Andy

Sergei

Sergei

Michael

Michael

Raymond

Raymond

Ben

Ben

Ain

Ain

Arman

Arman

Ri Hong (Cyrus)

Ri Hong (Cyrus)

Hui

Hui

Ohnmar

Ohnmar

Kurtis

Kurtis

Sofia

Sofia

Catherine

Catherine

Co

Co

Iris

Iris

Rajitha Sachinthaka (Sachi)

Rajitha Sachinthaka (Sachi)

Paul

Paul

Caroline

Caroline

meet the team →

projects

We go beyond for clients, we move mountains, we uncover secrets. Our team is proud of what we have achieved. Find out why here.

Highway 23 Slip Repair

Highway 23 Slip Repair

Ask the right questions

read more »→

Symphony Centre

Symphony Centre

An optimised retention solution that was music to the contractor’s ears

read more »→

Barber Grove to Seaview Wastewater Treatment Plant Pipe Duplication

Barber Grove to Seaview Wastewater Treatment Plant Pipe Duplication

This project involved installing a new 1.2km-long, one metre diameter pressurised wastewater pipeline.

read more »→

SH25A Taparahi Slip Remediation

SH25A Taparahi Slip Remediation

McConnell Dowell with joint venture partner Fulton Hogan and designers Beca and Tonkin+Taylor completed the new Taparahi Bridge and reopened State Highway 25A in record time.

read more »→

Mairangi Bay Pump Station

Mairangi Bay Pump Station

The existing Mairangi Bay pump station could no longer cater for the new development in the area and was overflowing onto nearby beaches.

read more »→

Andy has always made time to work with us, often without prior notice. His team listens to what we want to achieve, then works collaboratively to develop innovative and cost effective solutions.

Chris Osborne - Engineering Manager, Downer Group

March Cato have enjoyed working with Andy O’Sullivan. We feel confident that we can pick up the phone at any time and get talking to a team who properly listen and take the time to understand the challenges we’re facing, so they can develop up a site specific, sensible and constructable solution to keep our jobs moving along safely.

Tony Mills - General Manager, March Cato

Design and detailing of the soil – structure interaction for the Main Wharf North project was a considerable challenge for all involved. The ground improvement was required to stabilise the existing fill and alluvial soils, provide the majority of the lateral restraint for the entire wharf and back span slab in a highly seismic zone, all without excessive restraint of thermal and shrinkage actions. Andy and his team provided strong leadership in this complex interface, relentlessly driving efficiency and value in the solution.

Daniel Patten - Engineering Manager, McConnell Dowell

Over the past two and a half years, Andy and his team have consistently delivered innovative and efficient design solutions to a wide range of complex, geotechnically related, challenges on the City Rail Link Project.

Nigel McCreight - Engineering Manager, Auckland City Rail Link, Link Alliance

Andy has been able to bring specific knowledge from previous projects in Auckland, therefore with Andy and his team, we were able to optimise some design elements. By involving Andy O’Sullivan in the early stages of the design they were able to add value to the project.

Francesco Saibene - Project Director, Ghella Abergeldie JV