EMMEDUE system, the fundamental principles of the sandwich structure and their use in the building sector.
The PSSGE floor panel behaves and is considered like any other traditional floor with reinforced concrete ribbings, with the advantage to be lighter and easier to handle, since the brick has been replaced with polystyrene. The distance between two ribbings can be 56 cm (PSSG2E) or 37.5 cm (PSSG3E). In any case, the thickness of the elements which, once they are assembled, will constitute the floor is 112.5 cm. The floor panel is realized with a continuous 4 cm bottom layer (DALLA) below the hollow blocks infill and the ribbings, in order to avoid any discontinuity of material at the lower side and the creation of thermal bridges. The necessary thickness for the flooring and consequently the height of the ribbing are obtained by calculating 1/25 of the span for plane floors, 1/30 for the roof.
Once finished on site with 5 cm of concrete on the upper side and 2.5 cm on the lower, the single floor panel behaves like a plate. Therefore, the ideal work condition occurs when it is leaning on the walls below it along the overall perimeter, but it can also be used on three or two supports. In any case, it is necessary to verify it in accordance with the theory of the boards. Usually, this type of floor is used for a span up to 5 m.
A partition wall composed of 5 cm of polystyrene and a total of 5 cm of plaster, once finished, weights 104 kg/m².
Yes, it is possible. The structure is calculated and realized in accordance with the indications of the law which regulates constructions. The EMMEDUE system with single bearing panels obtained the recognition of its technical suitability for up to four storeys in several countries in the world.
They are necessary for two reasons:
a) To connect the different elements of the structure and give the necessary continuity once the spritz-beton/plaster is applied;
b) To avoid cracking in the spritz-beton/plaster in correspondence of the points in which there is a concentration of stress.
There is no theoretical limit to the panel’s height, while, practically, the limit is represented by the length of the plane of the truck in which it will be transported (13.60 meters). This possibility for elevated lengths makes the panel suitable even for cladding walls of hangars.
The panels are produced with a standard width of 112.5 cm and their length depends on the measurements of the architectural project.
The two single panels are different and have different uses. The single PSTE panel is used for partition or cladding walls. It does not have a structural function and so it is lightly wave-shaped and is finished on site, on both sides, with 2.5 cm of traditional cement plaster. The PSME panel is, instead, used for bearing walls and it is shaped with a more marked wave which allows a better internal covering of the reinforced net. It is completed on site, on both sides, with a layer of shot-crete with Rck which is at least 250 Kg/cm², whose thickness is 3.5 cm.