Hollowcore slabs and, purlins

Hollowcore slabs and purlins are precast concrete structural elements produced in a linear manner and mainly used in slabs and roofs of industrial and residential buildings. Usually, they are made of concrete with a characteristic strength between 35 and 50 MPa N/mm2 and Y1860C or Y1860S7 prestressing steel, although the type of concrete and the amount of reinforcement can be adapted to the project needs.

Hollowcore slabs have a standard width of 120 cm and can be adapted to smaller widths by cutting the precast elements once produced. Internal hollows are used in order to achieve an optimal relationship between their weight and their flexural strength. Slabs with heights between 16 and 50 cm are produced.

Purlins have a standard width of 23 or 35 cm depending on whether they have one or two lightening hollows. Different models with heights between 20 and 50 cm are produced.

The precast slabs (LPF, LTI) have a standard width of 120 cm and heights of 5, 20 and 25 cm. They are installed on site with porex lightening in order to reduce the weight of the slab and the volume of concrete poured on site.