Pilaster form for an insulating concrete form building system

Abstract

An insulated concrete wall is constructed by assembling main forms in rows where each main form has two panels of insulating foam and a series of bridging members extending between the panels for holding the panels apart for receiving a cast concrete layer therebetween. The top and bottom surfaces have mating projections and recesses to hold the forms interconnected. A pilaster form is provided for use with the main forms in defining a pilaster column extending from the concrete structural wall on at least one side of the wall, the pilaster form comprising a generally channel shape in plan for attachment to the main forms vertically along a slot in one of the panels of the main forms to define a web portion arranged to lie generally parallel to the panel and two leg portions arranged such that the leg portions extend from the web portion toward said one of the panels to hold the web portion at a position spaced from said one of the panels for receiving a column of the cast concrete within the pilaster form and connected to the cast concrete layer.

1 . Apparatus for use in constructing an insulated concrete wall comprising: 
 a plurality of main forms for assembling in stacked rows of side by side forms;    each main form comprising: 
 two panels of insulating foam each having a top surface, a bottom surface, two end surfaces, an inner surface facing toward the other of the panels and an outer surface facing away from the other of the panels;  
 a plurality of bridging members extending between the panels for holding the panels at a spaced position defining a channel between the inner surfaces of the panels for receiving a cast concrete layer therebetween;  
 the top and bottom surface having mating projections and recesses thereon by which the bottom surface of one form can intermesh with the top surface of a next row of forms to hold the forms interconnected;  
 the main forms being shaped and arranged such that the layer of concrete can be cast in the space between the panels of the stacked rows of forms to define a concrete structural wall insulated on each side by the panels;  
   and a pilaster form for use with the main forms in defining a pilaster extending from the concrete structural wall on at least one side of the wall, the pilaster form comprising:    a pilaster form body defined from insulating foam to define a generally channel shape in plan for attachment to the main forms vertically along one of the panels of the main forms along a slot in said one of the panels of the main forms;    the pilaster form body having a web portion arranged to lie generally parallel to said one of the panels and two leg portions arranged such that the leg portions extend from the web portion toward said one of the panels to hold the web portion at a position spaced from said one of the panels for receiving a column of the cast concrete within the pilaster form and connected to the cast concrete layer.    
   
   
       2 . The apparatus according to  claim 1  wherein the pilaster form body has a height equal to the height of the main forms such that the pilaster form body has top and bottom surfaces co-planar with the top and bottom surfaces of the main forms when installed.  
   
   
       3 . The apparatus according to  claim 1  wherein the leg portions lie at right angles to the web portion  
   
   
       4 . The apparatus according to  claim 1  wherein an inner surface of the pilaster form body has a series of recesses to tie to the concrete column.  
   
   
       5 . The apparatus according to  claim 4  wherein the series of recesses comprise longitudinal grooves on the web portion and the leg portions.  
   
   
       6 . The apparatus according to  claim 1  wherein the pilaster form body includes a buried strip member extending along the pilaster form body substantially along the full height of the pilaster form body.  
   
   
       7 . The apparatus according to  claim 6  wherein the buried strip member lies substantially parallel to an outer surface of the pilaster form body.  
   
   
       8 . The apparatus according to  claim 6  wherein the buried strip member includes two portions at right angles such that one portion lies parallel to an outer surface of the leg portion and one portion lies parallel to the web portion.  
   
   
       9 . The apparatus according to C claim 1  wherein the pilaster form body includes longitudinally extending markings defining a length to be cut off of the leg portions so as to reduce the distance of the web portion from said one of the panels.  
   
   
       10 . The apparatus according to  claim 1  wherein the pilaster form body has top and bottom surface having mating projections and recesses thereon by which the bottom surface of one form can intermesh with the top surface of a next form to hold the forms interconnected.  
   
   
       11 . A method for constructing an insulated concrete wall comprising: 
 providing a plurality of main forms;    each main form comprising: 
 two panels of insulating foam each having a top surface, a bottom surface, two end surfaces, an inner surface facing toward the other of the panels and an outer surface facing away from the other of the panels;  
 a plurality of bridging members extending between the panels for holding the panels at a spaced position defining a channel between the inner surfaces of the panels for receiving a cast concrete layer therebetween;  
 the top and bottom surface having mating projections and recesses thereon by which the bottom surface of one form can intermesh with the top surface of a next row of forms to hold the forms interconnected;  
 the main forms being shaped and arranged such that the layer of concrete can be cast in the space between the panels of the stacked rows of forms to define a concrete structural wall insulated on each side by the panels;  
   providing a pilaster form for use with the main forms in defining a pilaster extending from the concrete structural wall on at least one side of the wall, the pilaster form comprising:    a pilaster form body defined from insulating foam to define a generally channel shape in plan for attachment to the main forms vertically along one of the panels of the main forms along a slot in said one of the panels of the main forms;    the pilaster form body having a web portion arranged to lie generally parallel to said one of the panels and two leg portions arranged such that the leg portions extend from the web portion toward said one of the panels to hold the web portion at a position spaced from said one of the panels for receiving a column of the cast concrete within the pilaster form and connected to the cast concrete layer;    assembling the main forms in rows to define a continuous channel between the panels thereof with one panel of the forms on one side of the channel and the other panel of the forms on the other side of the forms;    forming a vertical slot in the panels on at least one side of the channel;    attaching the pilaster forms such that they are attached to said at least one side at the slot with the web portion spaced from the channel and the leg portions extending to panels on said at least one side such that the pilaster forms define a column inside the web portion and connected to the channel;    filling the channel and the column with concrete to form a pilaster column on the concrete wall;    and leaving the pilaster form body in place covering the pilaster column as an insulating layer.    
   
   
       12 . The method according to  claim 11  wherein the pilaster form body has a height equal to the height of the main forms such that the pilaster form body has top and bottom surfaces co-planar with the top and bottom surfaces of the main forms when installed.  
   
   
       13 . The method according to  claim 11  wherein the leg portions lie at right angles to the web portion  
   
   
       14 . The method according to  claim 11  wherein an inner surface of the pilaster form body has a series of recesses to tie to the concrete column.  
   
   
       15 . The method according to Caim  14  wherein the series of recesses comprise longitudinal grooves on the web portion and the leg portions.  
   
   
       16 . The method according to  claim 1  wherein the pilaster form body includes a buried strip member extending along the pilaster form body substantially along the full height of the pilaster form body.  
   
   
       17 . The method according to  claim 16  wherein the buried strip member lies substantially parallel to an outer surface of the pilaster form body.  
   
   
       18 . The method according to  claim 16  wherein the buried strip member includes two portions at right angles such that one portion lies parallel to an outer surface of the leg portion and one portion lies parallel to the web portion.  
   
   
       19 . The method according to  claim 11  wherein the pilaster form body includes longitudinally extending markings defining a length to be cut off of the leg portions so as to reduce the distance of the web portion from said one of the panels.  
   
   
       20 . The method according to  claim 11  wherein the pilaster form body has top and bottom surface having mating projections and recesses thereon by which the bottom surface of one form can intermesh with the top surface of a next form to hold the forms interconnected