Stairs
Straight and spiral stair flights with terrazzo surface, hammered finish or exposed aggregate surface
The steps may be straight, conical or L-shaped. The staircase is assembled on site by placing the steps on top of each other and aligning them. A temporary support is installed under the free end and removed after reinforcing and concreting the central column. The steps can also be installed on a metal frame of a spiral staircase.
Straight and spiral stair flights with central beam
The steps are fixed with bolts inserted into holes in the central beam filled with non-shrink grout. Minimum step thickness is 60 mm. Steps can be mounted on the beam before or after assembling the whole flight.
Stairs with metal frame
Steps are mechanically fixed. A 3–5 mm neoprene layer must be placed between the elements and the metal base. Minimum step thickness is 60 mm.



































