Contractors must perform a pre-construction condition survey of all buildings within the zone of influence. Safe vibration and displacement limits must be established in accordance with Building and Construction Authority (BCA) regulations. Equipment Calibration
Post-installation testing validates that the installed piles meet structural and geotechnical performance criteria. High-Strain Dynamic Testing (PDA) The Geotechnical Engineering Office
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Jacking continues until "practical refusal" is reached, indicating that the pile tip has successfully entered the intended bearing stratum. and existing buildings.
Site Investigation and Ground Characterization 2.1 Objectives
Jacked piling (hydraulic jacking) is a preferred displacement piling method in Singapore for its low noise, zero vibration, and minimal spoil. It is particularly suited for sites adjacent to MRT tunnels, hospitals, and existing buildings. The Geotechnical Engineering Office, Singapore (GEOSS) promotes this practice to standardize installation quality and mitigate risks associated with the Kallang Formation, Old Alluvium, and Bukit Timah Granite.