Geoss Good Practice For Installation Of Jacked Foundation Piles In Singapore !!exclusive!! May 2026

Designers are encouraged to conduct adequate site investigations, including probe holes at every pile group location to detect potential voids or cavities.

Typical allowable pile head settlements are 15 mm at 1.5 times the working load and 25 mm at 2.0 times the working load.

Jacking continues until practical refusal is reached. The load is then released and reapplied to measure the "set". The load is then released and reapplied to measure the "set"

The stability of the jacking machine must be verified, especially on soft ground. Specialist builders must maintain high-capacity rigs; for example, G3 category specialists require rigs with a minimum 400-ton counterweight .

After installation, tests like Sonic Logging , PDA/PIT , or Full Coring are used to assess the structural integrity of the piles. 5. Performance-Based Design After installation, tests like Sonic Logging , PDA/PIT

Rigs must undergo a regular maintenance regime with daily, monthly, and yearly checklists to ensure they remain in peak condition. 2. Installation Procedures and Sequence

The installation process must comply with and specific local good practices. tests like Sonic Logging

Current standards emphasize performance-based design where designers review instrumented Ultimate Load Test (ULT) results to verify design parameters.