Unit for the construction of slab foundations

Abstract

A unit ( 1 ) for the construction of slab foundations, the unit ( 1 ) includes modules (M) of domes (C) made of plastic material and which are suitable for being laid in the ground of a site in accordance with modules (M) of at least one dome (C) which are arranged laterally in relation to each other to form a gridwork of channels ( 2 ) which are engaged by reinforcing bars or sheaths (F). Interconnecting elements ( 10 ) are arranged in an intermediate position between at least two adjacent modules (M) of domes (C) to connect to each other the adjacent module (M) of domes (C) defining a reciprocal positioning distance. The interconnecting elements (10) are provided with a closing firewall ( 20 which can be coupled to each dome (C) facing along a channel ( 2 ) and at least two spacers ( 30 ) with a space between each other in order to leave the laying site free along the channels ( 2 ), and provided with anchoring pins ( 32 ) for being anchored to two firewalls ( 20 ) facing each other determining the reciprocal positioning distance.

1 . Unit for the construction of slab foundations, the unit comprising:
 a plurality of modules of domed bodies made of plastic material and which are suitable for being placed in position in a construction site with a concavity turned towards the construction site and in conformity with modules (M) of at least one domed body arranged laterally in relation to each other;   a plurality of channels formed by the modules of the adjacent domed bodies and which are suitable for being filled with aggregating material in order to form bearing beams; and   a plurality of interconnecting elements arranged in an intermediate position between at least two adjacent Modules of domed bodies to connect to each other the adjacent modules of domed bodies defining a reciprocal positioning distance;   wherein said interconnecting elements comprise one of two firewalls connected to respective domed bodies facing each other along said channels and spacing means interposed between the two firewalls to transmit the static load of the bearing beams directly onto the site where they are to be laid and to determine the reciprocal positioning distance.   
   
   
       2 . Unit according to  claim 1 , wherein said firewalls are coupled to relative domed bodies along respective connecting borders. 
   
   
       3 . Unit according to  claim 1 , wherein said firewalls comprise a single piece with the relative domed bodies. 
   
   
       4 . Unit according to  claim 1 , wherein said spacing means connect, in continuous fashion, two firewalls facing each other determining the reciprocal distance and isolating the site where the bearing beams are to be laid. 
   
   
       5 . Unit according to  claim 1 , wherein said spacing means connect, in discontinuous fashion, two firewalls facing each other determining the reciprocal positioning distance and leaving the site where the bearing beams are to be laid in direct contact with the bearing beams. 
   
   
       6 . Unit according to  claim 3 , wherein said spacing means are provided with anchoring means in order to be anchored to two firewalls facing each other determining the reciprocal positioning distance. 
   
   
       7 . Unit according to  claim 6 , wherein each said firewall comprises a wall for laterally closing the relative domed body, a shaped connecting border is integral with the wall and which is engaged in a shaped border of the relative domed body, and two engaging housings which are integral with the wall. 
   
   
       8 . Unit according to  claim 7 , wherein said anchoring means comprise a collapsible element which may be engaged in a respective engaging housing. 
   
   
       9 . Unit according to  claim 8 , wherein said spacing means comprise at least a shaped base plate and connecting between them the relative two collapsible elements, and an upper rib which is integral with the base plate; the base plate being shaped in correspondence with the collapsible elements to be arranged at a determined height above the ground of the building site. 
   
   
       10 . Unit according to  claim 9 , wherein said interconnecting means comprise two further base plates arranged transverse to the base plate to define a rigid connection between two spacing means. 
   
   
       11 . Unit according to  claim 1 , comprising a plurality of reinforcing elements which are housed through the channels and supported by the spacers at a determined distance from the round of the building site. 
   
   
       12 . Unit according to  claim 11 , wherein said spacing means comprise at least one positioning saddle for a respective reinforcing element. 
   
   
       13 . Unit according to  claim 1 , wherein each module of domed bodies comprises at least one or more domed bodies arranged coupled to each other along the respective shaped borders. 
   
   
       14 . Unit according to  claim 2 , wherein said shaped border of the firewall presents a shape which traces the shape of a respective shaped border of a said domed body. 
   
   
       15 . Unit according to  claim 2 , wherein said shaped border of the firewall is provided with a slit ( 24 ) which is crossed by a lip of a shaped border of a domed body. 
   
   
       16 . Unit according to  claim 4 , wherein each firewall comprises a wall for laterally closing the relative domed body; the said spacing means being connected to the wall. 
   
   
       17 . Unit according to  claim 7 , wherein said spacing means comprise at least a U-shaped bar having opposite extremities engaged inside a relative housing. 
   
   
       18 . Unit according to  claim 17 , wherein the interconnecting elements comprise a second U-shaped spacer having opposite extremities engaged inside a respective housing which are arranged at the top of each firewall.