The first step when performing a Guided Auger Boring is drilling a so called ‘straight pilot boring’. This allows us to define the exact trajectory for the placement of the final jacking tube. We use the Guided Auger Boring method to place tubes ranging in diameter from 200 mm to 1600 mm with greater precision.
When drilling the pilot rod we use a modified theodolite and a led probe to monitor direction and depth. Then we connect the jacket tube’s cutting head to the pilot rod. As it is driven into the ground the pipe will now follow the path of the pilot rod which will be removed in sections at the receiving end. An Auger transports the incoming soil back to the starting point. As a result of this method the jacking tube is now placed in the exact trajectory of the pilot rod.