| Local misconception | GEOSS correction | |---------------------|------------------| | “We have always used 1.5 m spacing – it works.” | Spacing must be calculated (typically 3–4 diameters) to avoid group effects. | | “Local soil is strong – no need for load test.” | Load tests are mandatory regardless of local belief. | | “Dynamic formulas are accurate for our driven piles.” | Only if calibrated by local dynamic monitoring (PDA). | | “Bored piles are always safer than driven.” | Not in loose granular soils – driven piles densify, bored piles loosen. |
GEOSS guidelines align with while maintaining specific local parameters derived from decades of practice in Singapore's unique geology. | | “Bored piles are always safer than driven
: Promoting the use of common technical standards to ensure quality and durability across different projects. Key Design & Construction Recommendations Key Design & Construction Recommendations