Coastal weathering steel

Conducting exposure tests to gather data on performance.

Weathering steel, has been used since the 1930s in railway coal wagons, bridges, buildings, and architectural features, and has proven its worth in North America, Europe, and Japan for over 55 years, and in Aotearoa for the past decade.

To ensure its optimal performance in our coastal environment, we are conducting exposure tests and updating our recommendations in HERA Report R4-97. 

This research is crucial for the construction industry, providing reliable data to maximise the durability and cost-effectiveness of weathering steel in coastal applications, ultimately enhancing the longevity and sustainability of our infrastructure in these rohe (areas).

Coating guidance

Providing understanding of coating systems for structural steelwork.

Understanding coating systems for structural steelwork is crucial for ensuring the longevity and durability of steel structures in New Zealand’s unique environment. 

This research focuses on providing clear and practical guidance to help engineers and project managers select the most appropriate and cost-effective coating systems. By specifying these systems in a generic manner, this guidance aims to reduce the risk of corrosion and extend the lifespan of steel structures. This work ultimately supports safer, more sustainable, and economically sound construction in Aotearoa.

Corrosivity zoning for structural steel

Determining the correct corrosivity zone for steel structures.

Paper based corrosion maps first published in SNZ TS3404:2018 were based on our past research to provide guidance to designers on the macro-climate corrosion classification of any site in Aotearoa New Zealand.

Our research has been focused on not only reviewing and updating the data used in these maps, but also transitioning this research into a more user friendly application to allow designers and engineers the ability to more precisely and quickly determine the correct corrosivity zone for their structural steel project. 

Getting this right is crucial, as the durability of a steel structure has a direct link to the life span of the structure. If we are able to assist in increasing the lifespan of steel structures, it in turn, increases the sustainability of steel structures for future generations.