2. Foundation constructed in site visit
Type: Concrete square pile( Precast
concrete pile)
They are square in sizes and reinforced by
rebar. The typical cross-sectional
dimensions range from 25 to 41 centimeters
and bearing capacities from 45 to 500 tons.
Type of machine used : Pile Drive
A pile driver hammers a precast concrete
pile into the ground. The pile is supported
by the vertical structure of the pile driver
and driven by heavy piston mechanism that
follows it down the leads as it penetrates
deeper into soil.
Precast details
Advantages:
• Cost saving compare to other types
of piling.
• High load capacity and corrosion
resistance
Disadvantages:
• High breakage rates
• Vulnerability to damage associated
with handling
3. Precast pilling process
Steps:
1. Excavation, to reduce level for the construction of
pile cap
2. Lifting, pile is tied on its lifting lug and ready to be
hammering.
3. Start hammering, the pile is driven into the
ground by hammering.
4. Construction of pile cap, after hammering process
and the formwork is build by using plywood
5. Cutting of the pile, this is
the last port of the pilling
process. The concrete is
crushed by Pneumatic
hammer. The cut pile is lifted
off and disposed.
