Till now the common method for excavating piles with large bores (above Σ800oj was to cut the friction of the pile area by casing and then use a big size crane (150t) or a pressure jack to lift the pile to the ground level and break it with a breaker or a crusher.
But recently due to the small available area at sites it has become difficult to use large cranes. CBS method (Crash Bucket Method) has been developed to carry out pile extraction in compact sites where big cranes, breakers and crushers are impossible to use.
1. Machinery and Equipments used are less as large crane is not used
2. Since no breakers and crushers are used, it is a low vibration and low noise method.
3. Since the pore wall is protected by the casing tube even after the pile extraction, there is no effect on the nearby grounds.
4. Since the piles are broken into lengths of 1.0 m`2.0m at the time of extraction only, it is easy to load them into trucks at the same time.
