Installation of bored piles
To install a pile you should drill a borehole of a specified diameter and depth. Next the borehole should be filled by fine-aggregated concrete and reinforced with a metal frame of a required cut. So, the bored piles are installed and concreted directly on a site. The diameter varies up to 1500mm and depth - up to 10m or 30 m and more. To increase bearing capacity the piles should be installed with a widening at the bottom of the borehole (a foot of pile). Mostly such types of bored piles are used in situations when there are heavy loads to a foundation and the few compressible soils are deep-seated.