The double-rib roof slab (TT) for flat roofs is produced in heights of 30 cm, 40 cm, 50 cm, 75 cm, 80 cm and 100 cm and has vertical ribs with thickness of 10 cm, 12.5 cm and 15 cm, which house the prestressing strands.
The double-rib roof slab (TT) system is completed on site by reinforced concrete castings and a structural screed with a thickness varying from 5 cm to 15 cm, which, in addition to improving the mechanical characteristics, fulfil the functions of load distribution and holding together the overall structure. The double-rib roof slab (TT) can be produced in widths smaller than the modular size of 250 cm and with variable lengths up to 32 m, depending on the specific project requirements, within the limits of structural feasibility, allowing ample flexibility in system dimensions.
It is designed for high working loads usually between 5 kN/m2 and 30 kN/m2.
The shape of the slab makes it easy to insert the holes required for the interface with the building installations.
The system also shows excellent fire resistance.
