Geoss Good Practice For Installation Of Jacked Foundation Piles In Singapore __exclusive__ Page

: A joint circular from BCA, IES, ACES, and GeoSS (2022) regarding ultimate load testing and design verification.

The job isn't done when the jack is removed.

Project parties must submit in a timely manner the following documents in the issued by the Commissioner of Building Control together with the Notice of Approval for the first piling plan:

: It is recommended that the jacking machine be used at approximately 75% of its maximum capacity . In Singapore, machines with capacities up to 800 tonnes are available.

While primarily designed for impact-driven piles, Dynamic Load Testing (PDA) is selectively adapted for jacked piles in Singapore to quickly verify structural integrity and capacity. Gages are attached to the pile head, and a drop hammer delivers a dynamic impact to generate force and velocity wave traces. Low Strain Integrity Testing (PIT) : A joint circular from BCA, IES, ACES,

Successful installation begins with a thorough understanding of the site’s soil profile to prevent damage to adjacent structures.

Whether you are a geotechnical engineer, a resident engineer, or a contractor, understanding these guidelines is critical for ensuring structural integrity and site safety.

The Geotechnical Society of Singapore (GeoSS) published a foundational guideline titled "" (October 2015) to standardize the use of this eco-friendly piling method .

GEOSS Good Practice for Installation of Jacked Foundation Piles in Singapore Introduction In Singapore, machines with capacities up to 800

This is the core of the "Good Practice" guide, covering:

If a pile meets refusal in an unexpected hard stratum before reaching the design depth: Stop jacking immediately to prevent pile crushing.

: Necessary tests (e.g., PDA, PIT, or sonic logging) must be carried out to verify the structural integrity of the piles Singapore Accreditation Council Permissible Tolerances

To ensure that driven or jacked piles are installed properly, a as tabulated in Appendix A of the circular is adopted. Depending on the classification of the building, requirements include: specifically regarding compaction and site drainage

: Ensure the working platform is of high quality, specifically regarding compaction and site drainage , as jacked machines can be extremely heavy.

3.3 Structural and Durability Requirements

[ BCA / Eurocode 7 Regulatory Mandate ] │ ▼ [ SAC CT 32 Qualifications ] │ ▼ [ IES/GeoSS Certified Piling Personnel (CPP) ] │ ▼ [ Field Execution according to GeoSS Good Practices ] 2. Comprehensive Geotechnical & Engineering Challenges