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:
Understanding the behavior of pile groups in complex geological formations (e.g., Kallang Formation).
Guidelines emphasize a risk-based approach to piled-raft foundations. This approach requires engineers to conduct thorough feasibility studies and impact assessments, particularly when designing pile foundations for high-rise buildings in dense urban areas. The use of bentonite or polymer slurry is
GeoSS guidelines often bridge the gap between theoretical Eurocode requirements and practical construction realities. These guidelines focus on:
In limestone or soft ground, base grouting is often verified to increase end-bearing capacity, particularly for bored piles. 4. Verification of Performance (Pile Load Testing) These guidelines focus on: In limestone or soft
The have established a clear, structured framework that bridges the gap between deep foundation theory and practical application. Jointly backed by regulatory and professional bodies—such as the Building and Construction Authority (BCA) , the Institution of Engineers Singapore (IES) , and the Association of Consulting Engineers Singapore (ACES) —these verified protocols ensure that deep foundation projects achieve structural compliance, environmental safety, and highly predictable geotechnical performance under varying ground conditions.
To accelerate construction timelines without introducing structural vulnerability, the Joint BCA/IES/ACES/GeoSS Circular defines an explicit framework where RLTs can substitute for traditional SLTs: Primary Purpose Maximum SLT to RLT Replacement Verification Condition Verifies safe working load and serviceability limits. Up to 100% replacement Core Principles of GeoSS Pile Guidelines
Explain how in Eurocode 7 are applied to local soils.
The Geotechnical Society of Singapore ( GeoSS ), alongside statutory bodies like the Building and Construction Authority ( BCA ), has established unified frameworks to eliminate design ambiguity and control ground displacement during deep foundation installation. These technical requirements bridge the gap between regional codes (such as Eurocode 7 and SS EN 1992 ) and real-world construction anomalies. By mandating standardized ground investigations, performance-based validation, and strict field methodologies, these verified guidelines guarantee structural integrity across complex geological profiles. Core Principles of GeoSS Pile Guidelines