Demolition of the Old Converter Building, Siderurgia Nacional, Seixal

The top of the building was approximately 39 meters above ground level. It was a reinforced concrete frame structure , adjacent to a nave and several functioning infrastructures, whose integrity, operability and safety had to be guaranteed throughout the demolition process.

Exceptionally, we used diamond cutting equipment to carry out activities up to 30 meters in height, with the support of a crawler crane with a maximum capacity of 200 tons. Below 30 meters, we resort to heavy mechanical means - High reach demolition excavators, equipped with cutting and crushing tools for concrete and steel.

This methodology allowed for efficient demolition in compliance with environmental requirements, such as low levels of noise and atmospheric pollution.

As with other projects of this nature, the resulting inert waste was processed on site using crushing equipment, carrying out the magnetic separation of the steel rod existing in the concrete reinforcement, using an electromagnet, and the granulometric separation of the mineral fraction up to a particle size of less than 5 cm, and these materials can later be used as construction aggregates, namely in filling cavities, tout-venant for embankments, bases and sub-bases for roads.