Building Foundation and Soil Stabilization Method and System

Abstract

System and means soil stabilization and moisture control for building foundations including methods and systems for stabilization moisture in a site for building foundation by applying soil moisture stabilization material in various forms, a preferred stabilization material being a mixture of aluninosilicate Pozzolan mineral and granular material such as sand.

1 . A system to improve the soil moisture stability of a building foundation site, comprising;
 a water permeable soil moisture stabilization material that improves the soil's ability to retain and transport moisture;   means for disposing the soil moisture stabilization material into soil on the building foundation site; and   means for delivering liquid to at least some portion of the moisture stabilization material.   
     
     
         2 . The system of  claim 1  wherein the soil moisture stabilization material placed in holes in the soil on the building foundation site. 
     
     
         3 . The system of  claim 2  wherein the holes containing soil moisture stabilization material are placed in the location that will comprise the building foundation location prior to placement of the foundation. 
     
     
         4 . The system of  claim 3  wherein the soil moisture stabilization material is wetted prior to placement of the building foundation. 
     
     
         5 . The system of  claim 1  wherein the soil moisture stabilization material comprises the porous aluminosilicate mineral Pozzolan. 
     
     
         6 . The system of  claim 1  wherein the soil moisture stabilization material is mixed into the surface of the indigenous soil on the building site. 
     
     
         7 . The system of  claim 2  wherein the soil moisture stabilization material is disposed in vertical holes and is encased in Tyvex™ fabric. 
     
     
         8 . The system of  claim 7  wherein the soil moisture stabilization material is disposed in perforated and/or open bottom pipe and encased in Tyvex™ fabric placed in vertical holes. 
     
     
         9 . The system of  claim 7  wherein water is supplied to the perimeter of the building foundation in perforated pipe encased in Tyvex™ fabric laid in trenches around at least a portion of the perimeter. 
     
     
         10 . The system of  claim 1  wherein the means for delivering liquid to the soil moisture stabilization material comprise conduits extending from a controllable source of liquid to a position in the soil moisture stabilization material. 
     
     
         11 . The system of  claim 1  wherein the soil moisture stabilization material placed adjacent a building foundation and has a moisture barrier material disposed in one or more positions not in direct contact with the foundation. 
     
     
         12 . A method for stabilizing the moisture content of the soil of a building site comprising;
 applying a water permeable soil moisture stabilization material to improve the soil's ability to retain and transport moisture, said stabilization material being placed under, around or adjacent a building foundation or any combination of such locations thereof   
     
     
         13 . The method of  claim 12  comprising the steps of:
 grading the building site to provide a surface for a building foundation; 
 adding a soil moisture stabilization material to the soil of the building site; and 
 adding means to controllably supply and control the flow of moisture to at least some of the soil moisture stabilization material. 
 
     
     
         14 . The method of  claim 13  wherein the soil moisture stabilization material is tilled into the soil of the building site. 
     
     
         15 . The method of  claim 12  wherein the soil moisture stabilization material is disposed in trenches or holes on the building site. 
     
     
         16 . The system of  claim 12  wherein the soil moisture stabilization material is disposed in vertical holes and is encased in Tyvex™ fabric. 
     
     
         17 . The system of  claim 7  wherein the soil moisture stabilization material is disposed in perforated and/or open bottom pipe encased in Tyvex™ fabric placed in vertical holes. 
     
     
         18 . The system of  claim 12  wherein water is supplied to the perimeter of the building foundation in perforated pipe encased in Tyvex™ fabric laid in trenches around at least a portion of the perimeter. 
     
     
         19 . The system of  claim 12  also comprising adding conduits extending from a controllable source of liquid to a position in the soil moisture stabilization material. 
     
     
         20 . The method of  claim 12  comprising placing a liquid barrier layer in the moisture stabilization material in a location selected from the group consisting of adjacent to but away from the foundation side surface, under or over the soil stabilization material or any combination of these locations.