METHODS FOR CONSTRUCTING TENSIONLESS CONCRETE PIER FOUNDATIONS AND FOUNDATIONS CONSTRUCTED THEREBY

摘要

A tensionless concrete pier foundation for supporting atower and a method of constructing the same is provided, thefoundation having an outer CMP and an inner CMP with an annular spacetherebetween in which a plurality of sleeved tower anchor bolts areembedded, at least the outer CMP having an upper edge that is flushwith the top of the foundation after the tower has been installed.A method of plumbing a tower anchor bolt cage using a bolt alignmentring is also provided that includes coupling the upper ends of theCMPs together with lateral spacing bolts that extend across theannular space. The tower anchor bolt cage is suspended from thelateral spacing bolts by the bolt alignment ring, and the lateralspacing bolts are shimmed on a low side as necessary for levelingthe alignment ring and plumbing the bolt cage, before concrete pour.