[0001] The present invention concerns the sector of building construction and in particular
it concerns prefabricated elements for the construction of ventilated and/or Insulated
cavities.
[0002] Non-retrievable prefabricated elements, or formworks are known, which are used for
the construction of ventilated cavities for raised floors,
[0003] These elements are generally available in the shape of a dome with four legs and
are positioned side by side and connected in such a way as to form a continuous grid
structure. The rod Irons for reinforced concrete (resistance-welded netting or ribbed
floor) are laid on this structure and then the concrete is cast. In this way a monolithic
floor is obtained, which is ventilated in the lower part and whose ventilated cavity
can be reached for laying pipes, ducts and cables.
[0004] The drawback of a floor constructed with these elements is represented by the fact
that it is rather thick, fragile and does not resist to elevated pressures.
[0005] The object of the present Invention is new prefabricated modular element with reduced
thickness, comprising a series of small domes and provided with a plurality of supports
at the bottom.
[0006] The new modular element, thanks to its reduced thickness and to its structure comprising
a plurality of domes, may be conveniently used in all the situations in which it is
necessary to obtain a ventilated and/or insulated layer, when the total thickness
of the floor must be reduced and/or the floor must bear high loads.
[0007] The upper surface of the new prefabricated element is substantially plane and comprises
a series of domes whose concave part is directed downwards.
[0008] Each common area among four domes, as far as the central part of the new element
is concerned, or between two domes, as far as the sides of the new element are concerned,
is arched until the point where it reaches the lower surface of the new modular element,
In such a way as to form a series of intermediate feet or supports distributed on
the entire surface of the new modular element.
[0009] Notwithstanding the reduced thickness, the structure formed by the various small
domes allows the new element to resist to the great stresses that are exerted perpendicularly
to it.
[0010] The various feet or supports present among the various domes of the new modular element
allows all the weights applied to the upper side of the element to be discharged onto
the support surface constituted by the feet or supports.
[0011] The edges of the various domes, along the sides of the new modular element, are bent
to form a U, so that it is possible to match more modular elements by simply inserting
the U-shaped edge of the side of a new modular element in the U-shaped edge of the
side of the modular element that has already been laid.
[0012] The upper part of each dome of the new modular element is provided with parallel
and/or radial projections.
[0013] The concrete reinforcement of the floor or upper wall can be comfortably laid on
the various new modular elements, even between said projections. In fact, the upper
part of the domes is partially plane, so that it is possible to make a smooth casting
where the projections reach a constant, suitable height for a smooth casting.
[0014] Notwithstanding the reduced thickness, the new modular element makes it possible
to ventilate properly the space created between the two floors or walls, thus avoiding
the formation of condensate and humidity, and to obtain heat and sound insulation.
[0015] The upper part is dome-shaped or flat. In fact, it can be either dome-shaped or flat,
in such a way as to facilitate any smooth casting or the introduction of iron rods
for reinforced concrete, aimed at obtaining a linear cope with constant and definite
thickness.
[0016] The following is a practical application among many of the Invention In question,
Illustrated in the enclosed drawings, wherein:
[0017] Figures 1 and 2 are two views, a plan view and a side view, respectively, of the
new modular element, in which It is possible to observe the various domes (1) comprising
an upper plane surface (1.1), a curved perimetral surface (1.2) and support feet or
bases (1.3) in common among the various domes and reaching the lower surface of the
new modular element.
[0018] Along the sides of the new modular element the edges (1.4) of the various domes (1)
are bent In the shape of a U, so that It Is possible to match more modular elements
by simply introducing the U-shaped edge (1.4) of the side of a new modular element
in the U-shaped edge (1.4) of the side of the modular element that has already been
laid.
[0019] Therefore, with reference to the above description and the enclosed drawings, the
following claims are put forth.
1. Non-retrievable modular element for the construction of ventilated and/or insulated
floors, characterized in that it comprises a surface shaped in such a way as to form a series of domes positioned
side by side, and wherein the common areas between adjacent domes are arched downwards
until reaching the lower surface of the new modular element.
2. Non-retrievable modular element for the construction of ventilated and/or insulated
floors according to claim 1, characterized in that the edges of the domes along the sides of the modular element are U-shaped, in such
a way as to permit the reciprocal fitting of each modular element being laid with
the modular elements that have already been laid.