The Geotechnical Society of Singapore ( GeoSS ) has established specific guidelines for the installation of jacked foundation piles to ensure structural safety and serviceability within Singapore’s unique geological landscape. Jacked piles are favored in urban areas due to their , negligible vibration , and minimal soil disposal . 1. Pre-Installation and Ground Considerations
7.3 Acceptance Criteria
: It is recommended that jacking machines operate at approximately 75% of their maximum capacity low noise The Geotechnical Society of Singapore (
Jacked foundation piles (or jack-in piles) are a popular "environmentally friendly" method in Singapore due to their vibration-free, air pollution-free, and low-noise characteristics and low-noise characteristics
: Because jacking machines are heavy, the working platform must be of high quality, with rigorous compaction and proper site drainage to ensure stability. installation logs (force
| Formation | Characteristics | Jacked pile suitability | |-----------|----------------|------------------------| | | Soft to firm, high compressibility | Good – full displacement helps densify | | Kallang Formation | Soft clay, peaty layers, sands | Good with sleeve or lubrication | | Old Alluvium | Dense to very dense, silty sand | Difficult – may need pre-boring or limited depth | | Jurong Formation | Weathered sedimentary rock | Requires shoe and high jacking force |