Bored and cast-in-place pile is one of the most convenient ways of foundation organization. Diameter is 0,5-1.5 m, depth is up to 25 m. To increase the bearing capacity bored piles can be produced with the widening in the lower part. Mostly they are used at heavy loading and deep foundations.
The construction of bored and cast-in-place piles involves a steel case to form a void in the soil which is then filled with concrete. The steel case is left in place to form a permanent casing and increase the reliability of the piles.
There are several ways of bored and cast-in-place piles construction. The choice depends on geological conditions of the building site.
The advantages of the technology:
1. High reliability provides the control of drilling process reaching the bearing layer.
2. It lets drill or take out boulders.
3. Filling the bore hole is done through the pipe with the reinforced case thus excluding the formation of collars.
4. During the drilling process there is a direct control of engineering and geological conditions, which lets us avoid any errors and find the most suitable solution.
5. The possibility of making widening lets us use fully the bearing ability of piles.