The example is shown although there are some from which a piling process differs. A special boring bit is attached in a pile tip part, and after making it settlement and fixed, drive it to reach predetermined depth, giving rotation to a pile through the rod inserted in the pile hollow part, change slurry to root hardening slurry to inject into a pile tip part.

Bearing capacity is made to ensure by hardening of root hardening slurry.

For application pile diameter, 400-600mm and the maximum pile length are about 110 times of the pile diameter and 50m

• 1Insert a rod in the hollow part of the pile, which has welded the special shoe, beforehand, and drive it to install at specified position.
• 2Connect the Auger drive unit, which is mounted on the leader of the ping rig, and the rod.
• 3Inject boring slurry from the nozzle of a special shoe while rotating a pile through a rod.
• 4Drive it to predetermined depth (bearing layers), rotating a pile, and switch the boring slurry to root hardening slurry, and make bearing capacity ensure.