Precast wall section and method of making walls from same

Abstract

The present invention is a wall section for use in constructing the walls of clean rooms. The wall section consists of a precast reinforced concrete pillar having a vertical portion and a flange portion. The vertical portion has a top end, a bottom end, and a vertical face. The flange portion projects perpendicularly away from the vertical face immediately adjacent the bottom end. The flange also has a horizontal face. The pillar has a curved concave face where the horizontal face of the flange portion joins the vertical face of the vertical portion. The vertical section of the pillar is reinforced by reinforcing bars which extend through the bottom end and project horizontally below and beyond the flange.

1 . A wall section for forming a wall, said wall section comprising: 
 a) a precast reinforced concrete pillar having a vertical portion and a bottom portion, the vertical portion having a top end, a bottom end, and a vertical face, the flange portion projecting perpendicularly away from the vertical face immediately adjacent the bottom end, the flange having a horizontal face;    b) the pillar having a curved concave face where the horizontal face of the flange portion joins the vertical face of the vertical portion,    c) the vertical section being reinforced by reinforcing bars,    d) the reinforcing bars extending through the bottom end and projecting horizontally below and beyond the flange.    
   
   
       2 . The precast wall section defined in  claim 1  wherein the flange has a substantially flat bottom and wherein the pillar has a plurality of nuts, each nut being countersunk into the fat bottom.  
   
   
       3 . The precast wall section defined in  claim 1  wherein the vertical portion of the pillar has opposite sides, each side having a flat vertical face and wherein two projecting flanges extend from the bottom of the vertical portion, one flange extending perpendicularly from each of the opposite sides, each flange having a flat horizontal surface, the pillar having a curved concave face on each side of the vertical portion, each curved concave face joining the flat horizontal face of the flange portion with the corresponding flat vertical face.  
   
   
       4 . The precast wall section defined in  claim 1  further comprising a plurality of mounting elements mounted to the bottom of the pillar.  
   
   
       5 . The precast wall section defined in  claim 4  wherein the mounting elements each comprise a tap retained in the pillar.  
   
   
       6 . The precast wall section defined in  claim 5  wherein the pillar further comprises a mounting element mounted to the top of the pillar.  
   
   
       7 . A method of constructing a wall comprising the steps of: 
 a) providing a plurality of precast reinforced concrete pillars each having a vertical portion and a bottom portion, the vertical portion having a top end, a bottom end, and a vertical face, the flange portion projecting perpendicularly away from the vertical face immediately adjacent the bottom end, the flange having a substantially flat bottom and a horizontal face, the pillar having a curved concave face where the horizontal face of the flange portion joins the vertical face of the vertical portion, the vertical section being reinforced by reinforcing bars;    b) providing a substrate upon which the concrete pillars are placed with the bottom of the flanges resting on the substrate,    c) pouring concrete over the substrate to a level flush with the horizontal flat face of the flange portion,    d) letting the poured concrete cure.    
   
   
       8 . The method of constructing a wall as defined in  claim 7  further comprising the step of mounting a top wall segment to the top end of the vertical portions of the pillars after the concrete has cured.  
   
   
       9 . The method of constructing a wall as defined in  claim 7  wherein the reinforcing bars have a horizontal section extending perpendicularly away from the vertical portion of the pillar below the flange.  
   
   
       10 . The method of constructing a wall as defined in  claim 7  wherein the pillar rests on a plurality of adjustable anchor bolts mounted to the bottom of the pillar, said mounting bolts each having a foot, said feet resting on top of the substrate, and further including the step of adjusting the height of the pillar above the substrate by adjusting the anchor bolts before pouring the concrete.  
   
   
       11 . The method of constructing a wall as defined in  claim 9  wherein pillar rests on a plurality of adjustable anchor bolts mounted to the bottom of the pillar, said mounting bolts each having a foot, said feet resting on top of the substrate, and further including the step of adjusting the height of the pillar above the substrate by adjusting the anchor bolts before pouring the concrete.