Jacked piling, also known as hydraulic jacking, involves pushing precast or spun piles into the ground using static hydraulic force rather than dynamic impact. This method is particularly suitable for Singapore’s urban environment, where noise and vibration from traditional driven piles could damage adjacent structures.
: Jack-in machines are heavy and require a stable, reinforced working platform to prevent the rig from tilting or sinking during operation.
: A common practice is to hold the maximum jacking pressure for approximately 30 seconds for at least two cycles to ensure stability.
The GeoSS Guidelines emphasize several critical factors for successful installation:
: In areas like the Jurong Formation or Bukit Timah Granite , varying rock profiles can lead to "short piles" if boulders or hard layers are encountered unexpectedly. 3. Machine Stability and Safety
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