Geoss Guidelines On Local Practices For Pile Foundation Design And Construction Verified -

New Standards for Deep Foundations: A Guide to the GeoSS Pile Foundation Guidelines

The use of bentonite or polymer slurry is standard practice to maintain borehole stability during the construction of bored piles in soft or unstable ground. 4. Spacing and Geometry Minimum Spacing: New Standards for Deep Foundations: A Guide to

To handle lateral forces from excavation or soil displacement, reinforcement must extend deep into competent soil strata. partial factors used in DA1-C1 versus DA1-C2 for Singapore projects? Select pile type (driven, bored, CFA, screw, micropile)

Design considerations (local adaptation)

• Select pile type (driven, bored, CFA, screw, micropile) based on subsurface conditions, access, vibration/noise constraints, and local construction capacity.
• Use local code provisions and calibration factors; where codes differ from international practice, document justification when adopting alternate parameters.
• Account for geohazards common locally (e.g., permafrost, expansive clays, collapsible soils, karst) with tailored design measures (insulation, deeper tips, ground improvement).
• Seismic design: adopt local seismic hazard data and site response; design for liquefaction mitigation where applicable (stone columns, grouting, deep foundations).
• Corrosion and durability: use local groundwater chemistry and atmospheric data to set material choices and protective measures (coatings, cathodic protection, sacrificial length).