Open Bore Piling
Open Bore Piling
Open bore piles are formed by drilling open holes into the ground, inserting reinforcement, and concreting the bore.
Typical Applications
Large load-bearing foundations
Bridges
High-rise structures
Stable ground conditions
Advantages
Large pile diameters achievable
High load capacity
Flexible reinforcement arrangements
Limitations
Bore instability risk
Groundwater management required
Slower installation compared to CFA
Typical Execution Sequence
Set out pile positions
Drill borehole to required depth
Support bore using casing or drilling fluid if necessary
Clean pile base
Inspect borehole
Insert reinforcement cage
Pour concrete using tremie method if required
Remove temporary casing where applicable
Quality Control
Bore depth verification
Base cleanliness checks
Concrete testing
Reinforcement inspection
Integrity testing
Subject To
Detailed geotechnical assessment
Groundwater control
Suitable rig access
