Anchor bolt placement protection assembly and method for aligning structural elements in a form when pouring concrete

Abstract

An anchor bolt placement and protection assembly for positioning or setting a threaded anchor bolt in a concrete stem foundation or concrete slab in relation to spaced form boards for controlling the depth of the anchor bolt in the concrete and the protected length of the anchor bolt projecting above the concrete foundation or slab. The assembly includes a base plate carrying a fixed, elongated tubular member having a lumen with an inner diameter dimensioned to receive the selected anchor bolt. The tubular member is sized to abut a detached tubular having an inside diameter that is substantially equal to the fixed tubular member's inside diameter. The assembly also includes a fastener with an anchor bolt thread engaging lumen with an inside diameter that is substantially equal to said fixed tubular member's inside diameter.

1 . An anchor bolt placement and protection assembly for positioning or setting a threaded anchor bolt in a concrete stem foundation or concrete slab in relation to at least one of two spaced form boards defining at least one surface of said concrete stem foundation or concrete slab and for controlling the depth of the anchor bolt in the concrete and the protected length of the anchor bolt projecting above the concrete foundation or slab, comprising: 
 a) a fixed, elongated tubular member having a central axis and a distal end, an open proximal end symmetrical about said central axis, a lumen with a predetermined inner diameter dimensioned to encompass the outer diameter of a selected anchor bolt and a depth between said distal end and said open proximal end correlated to the protected length of said anchor bolt's shaft that is to project above said concrete stem foundation or concrete slab;    b) a base plate having an aperture defining the open proximal end of said elongated tubular member and at least one integral elongated reinforcing rib extending laterally from said tubular member, said base plate having a top surface opposing a bottom surface and a first end edge spaced a predetermined distance from said tubular member's central axis;    c) a detached tubular member having a cylindrical side wall of selected axial length defining a lumen with an open distal end opposite an open proximal end, said lumen having an inside diameter that is substantially equal to said fixed tubular member's inside diameter; and    d) a fastener having a cylindrical side wall of selected axial length defining a thread engaging lumen with an open proximal end, said lumen having an inside diameter that is substantially equal to said fixed tubular member's inside diameter.    
   
   
       2 . The anchor bolt placement and protection assembly according to  claim 1 , wherein said base plate and said fixed tubular member are integrally formed as a one-piece unit.  
   
   
       3 . The anchor bolt placement and protection device according to  claim 1 , wherein said base plate and fixed tubular member are integrally formed as a unitary body fabricated from synthetic resinous material.  
   
   
       4 . The anchor bolt placement and protection assembly of  claim 1 , wherein said base plate circumscribes said tubular member's central axis, and at least one integral elongated plate portion extends perpendicularly from said elongated tubular member.  
   
   
       5 . An anchor bolt placement and protection assembly for positioning a threaded anchor bolt in a concrete foundation or concrete slab in relation to at least one of two spaced form boards that define at least one surface of said foundation or slab and for controlling the length of the anchor bolt projecting above the foundation or slab or controlling the depth of the bolt in the foundation or slab, comprising: 
 a) a substantially planar base plate having a bottom surface opposing an upper surface bearing alignment indicia; wherein said base plate includes a plurality of apertures each dimensioned to receive and support a nail;    b) said base plate carrying a fixed elongated tubular member having a central axis and an upper terminal end, an open lower end symmetrical about said central axis, a predetermined inner peripheral diameter dimensioned to encompass the diameter of a selected anchor bolt and a depth between said terminal end and said open lower end correlated to the length of said anchor bolt that is to project above said concrete stem foundation or concrete slab; and    c) a detached tubular member adapted to be coaxially aligned with said fixed tubular member and dimensioned to receive the anchor bolt when the bolt is inserted within said fixed tubular member and said coaxially aligned detached tubular member to allow a selected length of the anchor bolt to project above the plane of the base plate's upper surface.    
   
   
       6 . The anchor bolt placement and protection assembly of  claim 5 , wherein said base plate has at least one integral elongated plate portion extending laterally from said tubular member and including an end edge spaced a predetermined distance from said central axis.  
   
   
       7 . The anchor bolt placement and protection assembly of  claim 6 , wherein integral reinforcement ribs are spaced about the outer periphery of said fixed elongated tubular member at 90 intervals and extend from said base plate upper surface to adjacent said upper terminal end of said fixed elongated tubular member.  
   
   
       8 . The anchor bolt placement and protection assembly of  claim 7 , wherein said base plate and fixed tubular member are integrally formed as a unitary body fabricated from synthetic resinous material.  
   
   
       9 . The anchor bolt placement and protection assembly of  claim 8 , wherein said base plate comprises a substantially rectangular member having a length of at least four and one half inches.  
   
   
       10 . The anchor bolt placement and protection assembly of  claim 8 , wherein said base plate comprises a substantially rectangular member having a length of approximately twelve half inches.  
   
   
       11 . The anchor bolt placement and protection assembly of  claim 8 , wherein said base plate includes an integral elongated reinforcement rib is provided medianly of an elongated plate portion extending from adjacent said edge thereof to said elongated tubular member.  
   
   
       12 . The anchor bolt placement and protection assembly of  claim 8 , wherein said base plate includes a plurality of integral elongated reinforcement ribs spaced at 90 intervals about said tubular member.  
   
   
       13 . The anchor bolt placement and protection assembly of  claim 8 , wherein a plurality of transversely extending form board position indicating integral ribs are provided on the top surface of said base plate, said form board position indicating ribs being spaced about one inch apart.  
   
   
       14 . The anchor bolt placement and protection assembly of  claim 8 , wherein a plurality of transversely extending form board position indicating integral ribs are provided on the top surface of said base plate, said indicating ribs being evenly spaced and said nail receiving apertures being spaced about one inch apart.  
   
   
       15 . An anchor bolt placement assembly comprising: 
 a) an elongated anchor bolt having an elongated main body portion symmetrical about a longitudinal axis, said anchor bolt having threads at said bolt's distal end portion and a transversely extending abutment portion at said bolt's proximal end portion;    b) an anchor bolt placement and protection device including a fixed elongated tubular member symmetrical about a central longitudinal axis and having an open distal end and an open proximal end integral with a base plate including at least two integral laterally extending elongated plate portions each having top and bottom surfaces and an end edge spaced a predetermined distance from and extending in opposite directions from said central axis;    c) at least one detached tubular member adapted to abut the distal end of said fixed tubular member;    d) elongated form boards spaced apart to define a space to be filled with concrete and including parallel top edges coincident with the top surface of concrete filling said space; and    e) wherein said distal end portion of said anchor bolt is surrounded by said tubular extension sleeve and said fixed elongated tubular member of said anchor bolt placement and protection device and said proximal end portion of said anchor bolt is thrust into said body of concrete filling said space between said form boards until the bottom surface of said elongated plate portion of said base plate rests on the surface of said concrete until the concrete hardens whereupon said anchor bolt placement and protection device is removed from said anchor bolt.    
   
   
       16 . The anchor bolt placement assembly of  claim 15 , wherein said detached tubular member comprises an extension sleeve.  
   
   
       17 . The anchor bolt placement assembly of  claim 15 , wherein said detached tubular member comprises a threaded nut fastener adapted to threadably engage said anchor bolt's distal threads.  
   
   
       18 . The anchor bolt placement assembly of  claim 15 , wherein the edge of at least one laterally extending elongated plate portion overlaps said top edge of one of said form boards.  
   
   
       19 . The anchor bolt placement assembly of  claim 18 , wherein the end portion of said elongated plate portion that overlaps the top edge of said form board is detachably secured to the top edge of said form board.  
   
   
       20 . The anchor bolt placement assembly of  claim 18 , wherein each said integral elongated plate portion overlaps and extends past said top edge of an associated form board, and further including means detachably securing the distal end portions of each of said two elongated plate portions to an underlying form board.