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Hard Ground Press-in Method enables piles to be installed into difficult ground conditions such as gravelly soil and cobble or boulder mixed soil without losing the advantages of the Press-in Method. The augering area can be reduced to assist pile installation, minimizing disturbance to the soil strata with eliminating penetration resistance force.

Mechanism of The Pilot Coring Theory
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Advantages

The “Pilot Coring Theory”, GIKEN’s original theory for press-in with integrated simultaneous augering, makes sheet piling into hard ground possible without losing the advantages of the Press-in Method. Augering the minimum area of the ground to assist pile installation while sheet piles are being pressed in simultaneously. Hence, high bearing capacity is available from sheet piles which are installed by the Hard Ground Press-in Method.

Procedure of “Pilot Coring Press-in”
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Boulder being crushed by wedge effect
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