Our exclusive staircase line offers a wide range of straight concrete staircases of the highest toughness. Their structure has been tested for over 600 Kg/sqm. with a flexion response less than a millimeter. The flexion re-entered in the unloading procedure. This result puts the science of building in a whole new light. The steps can be covered in a wide array of materials and the balustrade can be both in stainless steel and layered glass.