Bored pile is another type of reinforced
concrete pile which is used to support high building which has heavy vertical
load. Bored pile is a cast-in-place concrete pile where the bored piles have to
be cast on construction site, while other concrete piles like Spun Pile and
Reinforced Concrete Square Pile are precast concrete pile which they’re cast in
the factory.
Normally bored piling has be to carried on those
tall buildings or massive industrial complexes, which require foundations which
can bear the load of thousands of tons, most probably in unstable or difficult
soil conditions. Bored piling is cast by using bored piling machine which has
specially designed drilling tools, buckets and grabs, it’s used to remove the
soil and rock. Normally it can be drilling into 50metres depth of soil. The
advantage of bored piling is its’ drilling method, little vibration and lower
noise level.
The drilling method is depending on the
condition of soil, piling contractor has to do soil investigation and decide
which drilling technology has to be carried on. Piling contractor decide the
correct drilling technology and minimize disturbance of the surrounding soil.
For cohesionless soils such as sands, gravels, silts etc, whether it’s under
the water table or not, the pile bore hole must be supported using steel casing
or stabilizing muds such as bentonite suspension. After these, reinforcement
bar will be put into the bore hole and concrete will be poured into the bore
hole.
Bored piling is popular to be used in
construction as a foundation especially for bridge work and tall building as
well. Bored piling work has to be done by specialist bored piling contractor,
normal piling contractor can’t be done without experience and knowledge about
bored piles.
