Old steel qualification
Part of the global goals for sustainable development (17 goals of the UN) is to use existing infrastructure and machines for longer. But how can older structures, cranes, machines or systems continue to be used under today’s stresses and safety requirements?
In the area of steel construction, there are guidelines for rail, road and waterways. The question of material properties plays an important role in these so-called recalculation guidelines.
The path to these properties ideally leads via existing inventory documents. However, this information is often not available and it is often unclear whether repairs during the service life did not result in the installation of other types of steel. This is typically assumed for buildings that were renovated from existing leftover material after the World War. Finally, for steels up to 1970 it can generally be assumed that they did not come from just one supplier, but from many, which results in a greater spread of properties. In addition, the question of welding suitability and resistance to brittle fracture or the reuse of components that have already been used (keyword Re-Use) repeatedly arises for the renovation measures. .
As an alternative to determining the material properties, there are two methods offered by IWT-Solutions AG:
- Core method
- Mobile analytics (OES) plus steel type identification “Steel2data”
The employees of IWT-Solutions AG have over 30 years of experience in the qualification of old steel and have successfully completed numerous projects for the reassessment of structures made of old steel. Well-known examples of this are the Leverkusen and Neuenkamp Rhine bridges, but also riveted bridges in the Deutsche Bahn AG portfolio.
The employees of IWT-Solutions AG have over 30 years of experience in the qualification of old steel and have successfully completed numerous projects for the reassessment of structures made of old steel. Well-known examples of this are the Leverkusen and Neuenkamp Rhine bridges, but also riveted bridges in the Deutsche Bahn AG portfolio.
More about scrap steel
OES measuring points / core removal (below left)