Foundation structure

Abstract

A building foundation structure has a supporting and heat and moisture insulating layer ( 17, 18, 40 ), preferably of foam glass. The layer rests on a flat and horizontal surface ( 51 ) of a ground layer ( 50 ). A metallic foil ( 111 ) covers the horizontal area of the foundation structure in order to prevent moisture and smell from propagating upwardly through the supporting and heat and moisture insulating layer ( 17, 18, 40 ).

1 . A building foundation structure comprising a heat and moisture insulating layer encompassed by a frame that surrounds said layer resting on additional layers of heat and moisture insulating material together with a foil of metallic material parts of the frame together with parts of the heat and moisture insulating layer are integrated in respective prefabricated building box units which when placed on the underlying foundation form a building foundation structure.  
   
   
       2 . A foundation structure according to  claim 1 , wherein the insulating layer consists of foam-glass.  
   
   
       3 . A foundation structure according to  claim 1  wherein the foil is located between the layer and layer.  
   
   
       4 . A foundation structure according to  claim 1  wherein the foil rests directly on said surface and the surface is comprised of a capillarity barrier layer.  
   
   
       5 . A foundation structure according to  claim 1  wherein the foil is an aluminum foil with a thickness of at least 0.1 mm.  
   
   
       6 . A foundation structure according to  claim 1 , wherein the layer includes at least two courses of insulating material and the metallic foil is sandwiched between two vertically adjacent insulating courses.  
   
   
       7 . A foundation structure according to  claim 6  wherein the foil has a thickness of at least 0.01 mm.  
   
   
       8 . A foundation structure according to  claim 6 , wherein in cach the layers is formed by mutually joined sheets of insulating material, one main surface of each sheet is covered with a piece of foil, the layers carry said foil pieces on their mutually facing sides, a strip of said foil material, sealingly joins together the foil coverings or cladding on adjacent sheets in at least one of the layers, and so that the joints between the sheets in respective layers are offset relative to each other.  
   
   
       9 . A foundation structure according to  claim 1 , wherein the strips are formed by edge portions of the sheet-covering foil that protrude beyond the edge portions of respective sheets along two adjacent edges thereof, wherewith the outwardly projecting edge portions of said foil coverings are caused to overlap an adjacent edge portion of the foil coverings of adjacent sheets.