Geoss Guidelines On Local Practices For Pile Foundation Design And Construction Online

The current guidelines (v1.2) will evolve. Announced for 2026:

: Since the mandate by the Building and Construction Authority (BCA), structural designs must utilize the partial factor safety format of the Eurocodes, using local GeoSS documents as Non-Contradictory Complementary Information (NCCI).

: Controlling ground heave, lateral movement, and vibrations during piling.

To ensure that bored or CFA piles do not suffer from internal defects like voids, soil inclusions, or necking, several non-destructive testing (NDT) methods are deployed: The current guidelines (v1

Key design considerations include:

A design is only as good as its field execution. Comprehensive quality assurance programs are mandatory under GEOSS guidelines to verify pile integrity and load-bearing performance. Static Load Testing (SLT)

The Guidelines on Identification of Rock During Bored Piling Works (first issued 2 September 2019) is a joint publication of GeoSS and BCA, produced under the collaborative efforts of an Industry Working Group comprising major government agencies involved in piling works, IES, ACES, and practitioners. To ensure that bored or CFA piles do

: Capped at 7.5 MPa under older standard norms, or customized via the characteristic cylinder strength ( fckf sub c k end-sub ) factoring under Eurocode 2 details.

Minimizing differential settlement in soft soils.

Designers must adapt construction methods to specific local formations: : Capped at 7

Map all existing piles within 1 km. Note types, ages, and performance (cracks, tilts, settlements).

-method) is applied based on regional empirical factors calibrated over decades of local pile load tests. Lateral Load Design and Soil-Structure Interaction

Commonly used in urban areas to minimize vibration, bored piles require stringent control, especially in sensitive soils.