To confirm the design assumptions, GeoSS Guidelines on Pile Load Testing recommend:
The Geotechnical Society of Singapore (GeoSS) has established a Guideline on Jacked Piles to standardize the installation of jacked foundation piles, a method favored in Singapore for its vibration-free and low-noise characteristics.
The GeoSS Guidelines emphasize several critical factors for successful installation: To confirm the design assumptions, GeoSS Guidelines on
: Jack-in machines are heavy and require a stable, reinforced working platform to prevent the rig from tilting or sinking during operation.
: Rigs should undergo a regular maintenance regime with daily, monthly, and yearly checklists to ensure they remain in safe working condition. Verification and Load Testing Verification and Load Testing : A common practice
: A common practice is to hold the maximum jacking pressure for approximately 30 seconds for at least two cycles to ensure stability.
: Specialist builders (e.g., G2 and G3 categories) must maintain rigs with minimum counterweights of 200 to 400 tonnes . : Allowable pile top settlements are typically limited
) adjusted in steps to a value of .
: Allowable pile top settlements are typically limited to 15mm at 1.5 times WL and 25mm at 2.0 times WL .
: Continuous monitoring of pile heave is essential. The jacking of adjacent piles can cause an already installed pile to lift, potentially separating the pile base and leading to a loss in end-bearing capacity.
