Recognised leaders in post-tensioned slabs

Post-tensioned concrete slabs make a world of difference in the construction of robust and long-lasting structures. Contech has decades of experience in a huge range of post-tensioned slab projects, making us the recognised industry leader. We’ve earned a reputation for our post-tensioned slab design skills, our adaptability, and our ability to exceed client expectations in complex and highly challenging situations.

Making it easy to get the right post-tensioned slab solution

At Contech, we know that there’s no one-size-fits-all in structural engineering. We know that every project has its own unique goals and challenges. Our structural engineering team works in close collaboration with consulting engineers and building owners to create tailored post-tensioned slab solutions.

Our experience in designing post-tensioned slabs to meet precise requirements means we can maximise utility while mitigating expensive risks. We offer help and guidance in the early stages of designing and specifying. Together, we can come up with a customised post-tensioned slab solution that’s right for your project.

Global excellence in post-tensioning

Contech is a certified Post-tensioning Specialist Company. We are qualified to use the European Approved and CE marked BBT VT CONA CMX post-tensioning kits, ensuring highest quality standards in every project.

As proud members of the worldwide BBR Network, we have access to a vast range of expert technical support and the latest news on post-tensioning designs, manufacturing processes, construction procedures and research and development.

To learn more about the technology we use, click through to our Post-tensioning Systems page. With Contech on your side, you can trust that your concrete structures will be as sturdy and durable as they come.

Previous post-tensioned slab projects

Some of the notable post-tensioned slab projects that Contech has delivered include:

  • Foodstuffs North Island Ambient Distribution Centre, Auckland: 74,000m2 of post-tensioned slab on grade, believed to be amongst the largest ever completed in the world under a single contract
  • Sistema Manufacturing Facility, Auckland: 50,000m2 of post-tensioned slab on grade
  • Fonterra Darfield, Canterbury: over 80,000m2 of post-tensioned slab for warehousing facilities completed over several contracts
  • Synlait Warehouses and Hardstands, Canterbury: over 100,000m2 of warehouse slab and hardstand aprons for various facilities
  • Woolworths Distribution Centre, Palmerston North: 30,000m2 of slab on grade
  • James Pascoe DC, Auckland: 25,000m2 of post-tensioned slab on grade. This project won the 2017 American PTI Award of Excellence , as well as the BBR Network Project of the Year Award in 2018

Recent post-tensioned slab projects:


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.