DE29808250U1 - Prefabricated component - Google Patents

Description

980966de W/gn 07 May 1998

Prefabricated building element

The subject of this innovation is a construction element made of glass fibre slatted panels with a thickness of at least 80 mm.

Mineral wool slatted panels have cut surfaces in which the fibers are predominantly arranged perpendicular to the surface. These mineral wool slatted panels are used to a large extent to be glued to the outside walls of buildings and, if necessary, doweled in order to achieve better thermal insulation.

Particularly when retrofitting thermal insulation to old buildings and using mineral wool slatted panels with a thickness of at least 80 mm, existing windows and doors create recessed window cavities or door cavities, i.e. the windows and doors are located much deeper in the building than before in relation to the new outer edge of the wall.

Glass fibre slatted panels are increasingly being manufactured in greater thicknesses. Glass fibre slatted panels with a thickness of 240 mm are already commercially available. For extremely good insulation and in buildings where the wall area is relatively small in relation to the window area, thicknesses of up to 300 mm are even being considered.

An external plaster is then generally applied to the glass fibre slatted panels, so that the window height after insulation is at least 100 mm and possibly even more than 300 mm lower. This not only looks unsightly, but also leads to reduced light penetration.

From the German utility model 297 14 683, a prefabricated construction element made of glass fibre lamella panels with a thickness of at least 80 mm is known, in which one of the four longitudinal edges is cut at an angle of 30 to 60° so that at least 10 mm of the cut side surfaces remain.

Although these light wedges have proven to be effective, they limit the architects’ freedom of design and lead to aesthetically less acceptable solutions for certain types of houses.

The innovation therefore has the task of further developing the principle of the light wedge according to German utility model 297 14 683 into aesthetically different and possibly better accepted solutions and thus also opening up further possibilities for architects and building owners.

This task is now solved by cutting the prefabricated structural element made of fiberglass slatted panels into a circle on one of the four longitudinal edges. The radius of this circle can be chosen to be larger than the thickness of the fiberglass slatted panel. Preferably, however, the radius corresponds to the thickness of the fiberglass slatted panel.

In principle, it is possible to cut conventionally dimensioned glass fiber slat panels in a circular manner on one of the four long edges, whereby both a piece of glass fiber slat panel and the new rounded light wedge are then present in one piece.

Preferably, however, a glass fibre lamella plate with a square cross-section is cut in a circular manner so that a smaller component is created.

Even with the new component with a circularly cut longitudinal edge, the remaining side surfaces and, if applicable, the newly created round cut surface can be

flexible material, which also extends beyond one of the cut side surfaces. This not only leads to increased mechanical stability of these surfaces, but also allows them to be bonded to the adjacent, non-cut normal fiberglass lamella panels. It is recommended that this flexible material extends at least 50 mm beyond the side edges to ensure a perfect connection with the next fiberglass lamella panel. The flexible material is preferably an alkali-resistant fabric or fleece. However, alkali-resistant nets can also be used, which on the one hand ensure increased stability and on the other hand enable the plaster to adhere well to the cut surfaces.

These prefabricated building elements are also installed either on one or both sides of the windows, whereby very attractive wall designs can be achieved by installing the building elements on only one side. This is preferably done on the side from which light is desired to enter the interior of the rooms.

The use of light wedges improves the daylight illumination of the rooms. This leads to a reduction in electricity consumption for artificial light. The viewing angle from the window is also improved. The room is exposed to sunlight for considerably longer, so that the solar heat input and thus the passive use of solar energy is significantly increased. This in turn leads to a reduced heating energy requirement.

The new prefabricated building element with a circularly cut longitudinal edge can be combined with a smoothly cut light wedge on the lintel of the window. A light wedge of this type inserted on the lintel preferably has a drip nose so that the water runs off easily and does not necessarily reach the window glass.

-A-

The fastening of the building elements is carried out in the usual way by gluing and, if necessary, additional doweling, as described in utility model 297 14 683. It can be particularly advantageous if the surface to be glued to the wall has previously been coated with a hardened layer of adhesive mortar, as surfaces pre-treated in this way can be glued to the substrate more easily and better.

The prefabricated building element and its use in construction are explained in more detail in the attached figures.

Figure 1 shows the cross-section through a component according to the innovation.

Figure 2 shows the cross-section through such a component, in which the glass fibre lamella plate in a form not yet cut forms an approximate square.

Figure 3 shows the cross-section of such a construction element, which was previously coated with an already hardened layer of adhesive mortar and is also taped with a flexible material.

The light wedges made of glass fibre slatted panels according to the present innovation but also according to German utility model 297 14 683 can be easily combined with thermal insulation with polystyrene, since these light wedges act like rectangular blocks as a fire barrier.

Claims (3)

Protection claims 1. Prefabricated building element made of glass fibre slatted panels with a thickness of at least 80 mm, characterized in that one of the four longitudinal edges is cut in a circular shape. 2. Prefabricated building element according to claim 1, characterized in that the radius of the circle corresponds approximately to the thickness of the glass fiber lamella panels. 3. Prefabricated building element according to one of claims 1 or 2, characterized in that the cross section in the originally uncut form forms a square.