Tower foundation guide rod nut

Abstract

A tower foundation ( 10 ) has a base slab ( 11 ), pillar slabs ( 12 ), and a crown stab ( 13 ), all of which are made of precast concrete structures. The slabs are all retained in position by steel guide rods ( 15 ) that extend upwardly from the base slab. The guide rods have externally threaded lower ends ( 16 ) configured, to receive internally threaded guide rod mounting nuts ( 17 ) which have a metal mounting plate ( 20 ) with a guide rod hole ( 21 ) therethrough, a main body portion ( 22 ) welded to the mounting plate and having a threaded channel ( 23 ) therethrough, and a sealing plate ( 24 ) coupled to bottom of the main body portion through a peripheral weld ( 25 ) so as to seal the bottom opening of the threaded channel.

1 . A tower foundation base slab comprising,
 a concrete body portion having a top surface, a bottom surface opposite said top surface;   a plurality of guide rod mounting nuts embedded within said concrete body portion, each guide rod mounting nut having a mounting plate with a guide rod hole therethrough, a main body portion having an internally threaded channel extending generally vertically between a channel top opening and a channel bottom, opening, said main body portion being positioned below said mounting plate and having said internally threaded channel aligned with said mounting plate guide rod hole, and a sealing plate coupled to said main body portion opposite said mounting plate completely sealing said channel bottom opening, and   a plurality of guide rod mounting holes extending between said mounting plate guide rod hole and said concrete body portion top surface.   
     
     
         2 . The tower foundation of  claim 1  wherein said main body portion of said guide rod mounting nut is welded to said mounting plate of said guide rod mounting nut. 
     
     
         3 . A tower foundation comprising:
 a concrete base slab having a plurality of guide rod mounting holes extending from a top surface to a plurality of guide rod mounting nuts, each nut having a mounting plate coupled to a main body portion with a threaded channel therethrough and a sealing plate sealing a bottom opening of said threaded channel,   at least one pillar slab having a plurality of guide rod mounting holes aligned with said base slab guide rod mounting holes,   a concrete crown slab having a plurality of guide rod mounting holes aligned with said at least one pillar slab plurality of guide rod mounting holes;   a plurality of guide rods, each said guide rod extending through one said base slab guide rod mounting hole, one said pillar slab guide rod mounting hole, one said crown slab guide rod mounting hole, and threaded into one said threaded channel of said guide rod mounting nut main body portion.   
     
     
         4 . The tower foundation of  claim 3  wherein said main body portion of said guide rod mounting nut is welded to said mounting plate of said guide rod mounting nut. 
     
     
         5 . A tower foundation base slab comprising,
 a concrete body portion having a top surface, a bottom surface opposite said top surface;   a plurality of guide rod mounting nuts embedded within said concrete body portion, each guide rod mounting nut having a plate with a guide rod hole therethrough, a main body portion permanently mounted to said plate, said main body portion including a threaded channel therethrough, and a sealing plate coupled to said main body portion and sealing one end of said channel, and   a plurality of guide rod mounting holes extending from said concrete body portion top surface to said main body portion threaded channel.   
     
     
         6 . The tower foundation of  claim 5  wherein said main body portion of said guide rod mounting nut is welded to said plate of said guide rod mounting nut. 
     
     
         7 . The tower foundation of  claim 5  wherein said guide rod mounting nut plate is positioned directly above said guide rod mounting nut main body portion. 
     
     
         8 . The tower foundation of  claim 7  wherein said plate guide rod hole is axially aligned with said threaded channel.