The journey to verification involved an extensive comparative study. A technical working group under GEOSS (Global Earth Observation System of Systems / or relevant local geotechnical society context ) analyzed a series of case studies where local piling methods were utilized.
Another local consideration addressed in GeoSS guidance is negative skin friction (downdrag) on piles—a particular concern in areas with soft compressible soils. Seminar materials from GeoSS identify common mistakes in designing piles subjected to negative skin friction, including: Seminar materials from GeoSS identify common mistakes in
Per GeoSS jacked pile guidelines , the team planned a "from the inside out" jacking sequence to prevent excessive soil displacement from affecting neighboring structures. Verification and Construction Guidelines on Local Practices for Pile Foundation Design
Geological Society of Singapore. (Specific Year). Guidelines on Local Practices for Pile Foundation Design and Construction. [Technical Committee Report]. large kentledge setups can be massive
In Singapore, the kentledge method—using concrete blocks or steel plates as dead weight—is the conventional approach for determining geotechnical design values and pile response to applied load, both in settlement and ultimate load terms. However, large kentledge setups can be massive, reaching heights that pose safety hazards to workers and the public if improperly designed.
This summary reflects the key verified points typically found in GEOSS publications (e.g., “Design & Practice” guides) and aligns with local Singapore practices, including compliance with SS EN 1997 (Eurocode 7) and the Building Control Regulations.