Use of percussive and vibratory energy to install piles inevitably generates excessive noise and vibration during construction. Improving technology lowers the level of these but will never completely eliminate them unless the driving principles will change. In case of Cast-in-site concrete piling, quality control is difficult, because piles are to be processed at site where excess wasted soils and muddy water and temporary facilities are inevitable.

Use of static load to install piles allows piling work to be carried out silently and vibration-free. There is a great difference in superiority between Giken's Press-in System and other hydraulic jacking systems.

Type of Counter Weight

Even if hydraulic jacking systems are used for pile installation, the way of obtaining counter weight is still as the same as dynamic driving machines. Machines must be big and heavy and they can't avoid the danger of overturning and the necessity of temporary platforms for work over water or above uneven ground. Although noiseless and vibration-free, these systems don't satisfy the Five Construction Principles and are not far from being conventional methods.

The hydraulic jacking system that utilizes fully installed piles, which are anchored into the ground and regarded as a united part of the Earth, to obtain reaction force for pile installation is distinctively called the Press-in Method. In the press-in principle that utilizes reaction force as its basic mode of operation, the self-weight of the piling machine and self-standing base machine are rather unimportant. Moreover the superiority of the principle enjoys great advantages with the integrated GRB System , which allows all moving, pitching and pressing-in of piles to be systematically carried out from the top of fully installed piles.