OVER 60 YEARS OF UNMATCHED EXPERIENCE

 

Contech is New Zealand’s leading specialist civil engineering company in concrete construction and remediation.

 

Our specialist concrete engineers bring proven design expertise and problem-solving abilities to every project, helping you achieve the optimum solution where long-term performance is the ultimate benchmark.

WHAT WE DO

POST TENSIONING SLABS & SYSTEMS

 

Contech’s post-tensioned slabs and systems strengthen concrete in any location – enabling longer spans and simpler engineered concrete solutions.

PREVENT CORROSION DAMAGE

 

When it comes to safeguarding vital infrastructure, we’ve got you covered: we can protect bridge and wharf structures, water and wastewater infrastructure, and industrial facilities.

 

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CONCRETE REPAIRS FOR DAMAGED STRUCTURES

 

Contech offer a suite of concrete repair services and solutions that repair and restore the strength and durability of your structures. If you need concrete repairs, we’ve got the expertise.

REINSTATE OR REINFORCE YOUR STRUCTURE

 

Contech offer a suite of concrete structure strengthening solutions using FRP, post-tensioning or even titanium. We’ve got the expertise and solution to suit your project.

 

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MASTERS OF CONCRETE ENGINEERING CHALLENGES

 

At Contech, we specialise in mastering the hard stuff because we recognise that in civil engineering, it’s not a matter of what could go wrong, but rather, what will go wrong. Our team of dedicated civil engineers thrive on these challenges because we know they hold the potential for groundbreaking solutions. We embrace each obstacle as an opportunity to showcase our expertise.

 

READ ABOUT OUR PROJECTS

OUR REPUTATION IS ROCK-SOLID – ASK OUR CLIENTS

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As part of the BBR Network, Contech has access to the latest technical knowledge and resources, project support and global knowledge sharing. This includes BBR’s internationally-recognised brands and processes, and more.

Access Our Expertise

 

Whether you’re a consulting engineer, building owner, construction company or project manager, Contech will work closely with your team to ensure excellence.

 

We believe that transparent and honest communication is key to a successful collaboration, so you can count on us to provide you with accurate assessments and trustworthy guidance throughout the entire process.

If you have a concrete engineering question, or a problem you can’t solve, chances are we have the answer.

COMMON QUESTIONS

We’ve been answering questions on
concrete engineering for decades.
Here are some of the topics we’re often
asked to comment on:

What is the main advantage of PT Slabs?

No sawcuts and minimal construction joints. This is because all concrete drying shrinkage is directed to the floor edges, eliminating potential for internal floor cracks. This also eliminates expensive lifetime maintenance of sawcuts and joints.

Who designs the PT Slabs?

Contech provide full design and drawing service for PT Slabs on grade. We will also advise designers if they would rather undertake the design themselves.

How is Sewpercoat different than other Biogenic Corrosion Coatings?

Sewpercoat both repairs the damage caused by Biogenic Corrosion and protects the structure from on-going Biogenic corrosion by introducing a “bacterio-static effect” that drastically slows down the acidophilic bacteria ecosystem, inhibiting the acid generation at the source itself.

What is a Codemark Certifed FRP system, and why should I specify a Codemark FRP system?

A CodeMark Certificate of Conformity is evidence that the stated FRP system has been independently tested and confirmed as meeting the following key requirements of the NZ building code:

  • B1 Structure: clauses B1.1, B1.2, B1.3.1, B1.3.2, B1.3.3 and B1.3.4
  • B2 Durability: clause B2.3.1
  • E2 External moisture: clauses E2.3.2, E2.3.3,and E2.3.5
  • F2 Hazardous building materials: clause F2.3.1

An FRP system with Codemark cannot be rejected by a New Zealand consent issuing body as being unsuitable for the purposes defined in the Codemark application.

What are the relevant design standards for FRP?

There are a number of accepted design guides for strengthening structures with FRP. The most commonly used in New Zealand is ACI440.2R, the most recent version was released in 2017. Many other countries have also published FRP design standards which have varying balances of ease of use/computation and conservatism/efficiency. Notable examples include TR55 (UK), fib Bulletin 14 (Europe), SIA 166 – SIA 262 (Switzerland), and CNR-DT 200 R1/2013 (Italy).

CONTECH HAS BRANCHES IN AUCKLAND, WELLINGTON AND CHRISTCHURCH.

If you would like some advice on a project or need a quote tell us a little about the project
and the relevant expert will get back to you soon.