Geoss Guidelines On Local Practices For Pile Foundation Design And Construction Verified <PREMIUM →>

: Moving beyond prescriptive methods, the guidelines emphasize Performance-Based Pile Design (PBPD) for bored piles, which allows for more efficient and optimized structures based on verified performance.

: Recommends using temporary earth retaining walls or open trenches to contain ground movements when working near sensitive adjacent buildings. For years, the industry faced a dichotomy: rigid

: Recommends using short column design principles, accounting for reinforcement bars to enhance structural capacity. requires careful settlement analysis |

For years, the industry faced a dichotomy: rigid adherence to international standards that might not account for unique local soil behaviors, or reliance on "rule-of-thumb" local practices that lacked formal verification. The newly verified GEOSS guidelines resolve this tension. : Moving beyond prescriptive methods

The five major geological formations relevant to pile construction in Singapore include:

| Formation | Characteristics | Implications for Piling | |-----------|-----------------|------------------------| | | Granite and granitic rocks | Generally competent for rock socketing | | Jurong Formation | Sedimentary rocks with karstic features, hidden cavities | Challenging conditions requiring cavity treatment and risk-based approaches | | Fort Canning Boulder Bed (FCBB) | Mixed boulder deposits | Variable conditions requiring careful interpretation | | Old Alluvium | Dense, construction-friendly material | Most favorable for pile construction | | Kallang Formation | Soft marine clay deposits | Negative skin friction concerns, requires careful settlement analysis |