Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1998-01-17
1999-08-10
Graysay, Tamara
Hydraulic and earth engineering
Foundation
Columnar structure
405236, 405266, 52157, E02D 574
Patent
active
059348364
ABSTRACT:
A ground anchor device for securing a building foundation and other structures to a ground surface using the subject anchor device. The anchor device is designed to be self advancing when rotated into the ground surface to depths of 10 to 30 feet and greater. The device includes one or more hollow pipe sections coupled together and connected to a pipe extension with drill point. The pipe extension includes a helice therearound for helping advance the anchor device into the ground surface. The pipe extension and hollow pipe sections are driven into the ground using a kelly bar. The kelly bar includes one end having a square drive section which is received inside a square opening in a drive collar. The drive collar is mounted to an inner circumference of the pipe extension. When the kelly bar is rotated, the square drive section of the kelly bar engages the sides of the drive collar for rotating the pipe extension and pipe sections. The kelly bar also includes a hold down bar collar which engages a top of an internal collar attached to one end of a pipe section. The hold down bar collar holds the kelly bar against a top of the pipe extension. The hollow pipe sections and pipe extension include grout holes therein for introducing grout under pressure into the surrounding soil when the drilling has been completed and the kelly bar removed.
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Ludwig Michael R.
Rupiper Stan
Crabtree Edwin H.
Graysay Tamara
Integrated Stabilization Technologies Inc.
Lee Jong-Suk
Margolis Donald W.
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