High pressure water jetting can increase pored water pressure around pile toe and create temporarily status that soil particles are moved easily. At the same time, upstreaming water flow reduces skin friction of pile and reduces interlock resistance by washing out soil inside interlock. Therefore Press-in with Water Jetting reduces penetration resistance, and enables install piles efficiently with smaller press-in force without damaging pile.

As the volume and pressure of water can be adjusted according to requirements, and as the water is applied only where it is needed large voids are not created. The soil parameters quickly return to their normal state, as evidenced by the adequacy of the reaction force available in pressing-in the following piles. In short by controlling the water jetting procedure all the advantages are realised without damage to the soil.