Depending on the geological conditions, the size of the pile when using small pile size is not much high than tradition pile.
In some cases, when the soil layer is too thick, the building is too narrow, the cost is lower than the use of pressed piles. The effectiveness of bored piles is also reflected in other feature such as:
Do not cause cracks in adjacent works when construction, it will not cause the cost of compensation, repair of neighboring works, speed up the construction progress.
When installing small diameter bored piles to ensure the absolute safety of the existing works around, it is also the biggest advantage for the solution of foundation insert today.