Liner for concrete footing and method

Abstract

A footing liner is provided to preserve and maintain the design of a footing dug in ground in accordance with the engineering and architectural specifications. The liner for footing is disposable inside the trench for receiving concrete slurry, when set forming a concrete footing forms inside the liner. The liner comprises a channel and a pair of upwardly extending walls connected to the channel for holding the slurry therein. One of the walls includes a sloping portion, which extends inwardly of the perimeter to form a perimeter liner while an interior liner includes two sloping walls. Another embodiment of the perimeter liner is for brick veneer, steel and prefabricated buildings.

What is claimed as new and what is desired to secure by Letters Patent of the United States is:  
     
         1 . A liner to preserve a predetermined shape and design of a concrete footing to be formed in a trench dug in a ground, said liner being disposable inside a trench for receiving slurry when set forming a concrete footing in said liner, said liner comprising a channel and a pair walls connected to said channel for holding a slurry therein.  
     
     
         2 . The liner of  claim 1  wherein said pair of walls extend upwardly.  
     
     
         3 . The liner of  claim 1  wherein one of said pair of walls includes three continuous portions, a first vertically extending portion, and a second slanted upwardly extending portion and a third horizontal portion.  
     
     
         4 . The liner of  claim 1  wherein each of said pair of walls includes three continuous portions, a first vertically extending portion, and a second slanted upwardly extending portion and a third horizontal portion.  
     
     
         5 . The liner of  claim 1  wherein one of said walls terminates adjacent ground level and another said wall extending spatially above said one wall.  
     
     
         6 . The liner of  claim 3  wherein said third horizontal portion of one said wall extends spatially above said other wall.  
     
     
         7 . The liner of  claim 4  wherein said second slanted portion of each said wall extends in opposite directions.  
     
     
         8 . A footing liner to preserve a predetermined shape and structure of a concrete footing to be formed inside said liner in a trench dug in a ground, said liner being disposable inside a trench for receiving concrete slurry therein, said liner forming a mold for slurry and permitting setting into a concrete footing.  
     
     
         9 . The liner of  claim 8  further including a channel and a pair of upwardly extending walls connected to said channel.  
     
     
         10 . The liner of  claim 9  wherein one of said pair of walls includes three continuous portions, a first vertically extending portion, and a second slanted upwardly extending portion and a third horizontal portion.  
     
     
         11 . The liner of  claim 9  wherein each of said pair of walls includes three continuous portions, a first vertically extending portion, and a second slanted upwardly extending portion and a third horizontal portion.  
     
     
         12 . The liner of  claim 9  wherein one said wall terminates adjacent ground level and another said wall extending spatially above said one wall.  
     
     
         13 . The liner of  claim 10  wherein said third horizontal portion of one said wall extending spatially above said other wall.  
     
     
         14 . The liner of  claim 11  wherein said second slanted portion of each of said wall extending in opposite direction.  
     
     
         15 . The liner of  claim 8  further including a channel and a pair of upwardly extending walls connected to said channel, wherein each of said pair of walls include a slanted portion.  
     
     
         16 . The liner of  claim 8  wherein said liner is formed of a polymeric material.  
     
     
         17 . A method for constructing a concrete slab for a building comprising the steps of: 
 A. digging a trench for a footing in a ground around a perimeter of a building;    B. installing a supporting frame about the trench;    C. disposing a liner inside the trench to hold a concrete slurry;    D. disposing reinforcing bars inside the supporting framework; and    E. pouring concrete slurry inside the supporting frame including the liner and permitting the slurry to set into and form a concrete perimeter footing and a concrete slab.    
     
     
         18 . The method of  claim 17  further including the steps of: 
 E. digging another trench for a footing in a ground within the perimeter of a building;  
 F. disposing another liner inside the another trench; and wherein step D includes pouring concrete slurry in he another liner and permitting the slurry to set into and form a load bearing wall footing beneath the slab.  
 
     
     
         19 . In a process for constructing concrete slab of a building including digging a perimeter footing in a ground; installing a supporting framework about the perimeter pouring a concrete slurry inside the framework; a method for preserving shape and design of the concrete footing comprising the steps of: 
 A. disposing a pre-formed liner conforming in shape substantially to a cross-section of the footing located inside the footing before the step of pouring in the concrete slurry, and    B. allowing the poured concrete slurry to cure to form the concrete footing and slab.