Geoss Good Practice For Installation Of Jacked Foundation Piles In Singapore Review

In Singapore, deep foundation designs must meet the structural and geotechnical safety frameworks governed by and relevant local annexes. For specialist contractors, equipment safety and personnel qualification are heavily regulated:

It is imperative to conduct an adequate site investigation to identify all ground formations and layers, and to determine ground properties. The extent must include a sufficient number of site investigation boreholes and sufficient exploration depth. Unnecessary cutting down in site investigation costs may prove to be “penny wise, pound foolish”—a cost too hefty to pay. In Singapore, deep foundation designs must meet the

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 Unnecessary cutting down in site investigation costs may

Additionally, all jacked piling works must be supervised by a registered under BCA’s IES/ACES scheme, with a copy of the GEOSS checklist submitted to QPS (Qualified Person Supervision) daily. Equipment Calibration Additionally

The guide specifies requirements for the jack-in rig to ensure stability and accuracy:

However, jacking piles is not simply "pushing steel into the ground." In Singapore’s complex geological profile—from Kallang Formation clays to Old Alluvium and even weathered sedimentary rocks—poor jacking practices lead to pile buckling, ground heave, and damage to adjacent structures. This is where the good practice guidelines become indispensable.