Patent ID: 8272181
Filing Date: 2012-09-25
Classification: E02D,E04B

Abstract:
1. In a foundation adapted for installation of a tower flange thereon, said tower flange having a downwardly facing bottom and an upwardly facing top, and a plurality of bolt holes extending from the bottom to the top, the improvement comprising: a bolt package comprising a plurality of upright, anchor bolts having a lower end anchored in a structure, said anchor bolts having upper ends projecting upwardly from said structure and extending through said tower flange; each said anchor bolt comprising a sleeve continuously extending along at least a portion of a length of each anchor bolt, but said sleeve terminating at a sleeve top below the downwardly facing bottom of said tower flange, wherein an annulus is defined between the anchor bolt and the sleeve; said upper ends of said anchor bolts passing upwardly through the tower flange and threaded nuts threaded upon said upper ends above said upwardly facing top of the tower flange and tightened downwardly thereover sufficiently to place said anchor bolts under heavy tension; and the upper end of at least one of said anchor bolts comprising a grout cap disposed over a portion of a length of the at least one anchor bolt, where the portion of the length of the at least one anchor bolt extends from the sleeve top up into the respective bolt hole in the downwardly facing bottom of the tower flange.