Geoss Good Practice For Installation Of Jacked Foundation Piles In Singapore Work Jun 2026

Jacked piles are —meaning they are installed by forcing soil aside rather than removing it. Displacement piles are defined as piles installed into the ground by driving, jacking, vibration, or screwing, without excavation or removal of materials except to limit heave, reduce vibration, remove obstructions, or assist penetration (BS EN 12699).

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.

No amount of construction expertise can compensate for inadequate ground characterisation. The joint establishes mandatory requirements for ground investigation, load testing, and quality control tests for foundations of buildings of 10 storeys or more, and buildings of 5 to 9 storeys with a footprint larger than 100m². For jacked piles specifically, a thorough site investigation must address: Jacked piles are —meaning they are installed by

The installation of jacked piles is a cornerstone of Singapore's deep foundation landscape, particularly in its dense urban environment where minimizing noise and vibration is critical. The Geo-Engineering Solutions for Sustainability (GEOSS), in close collaboration with the Building and Construction Authority (BCA), the Institution of Engineers, Singapore (IES), and the Association of Consulting Engineers, Singapore (ACES), has issued crucial guidelines that define good industry practice. This article presents a comprehensive guide to these practices, ensuring that jacked piles achieve their design capacity and structural integrity.

Jacked piling has over 20 years of history in Singapore, evolving from small-scale underpinning to supporting high-rise structures. It is favored for being vibration-free, air pollution-free, and generating low noise levels, making it ideal for urban infill sites. Modern jacking machines in the local market now reach capacities of up to . 2. Machine Capacity and Operational Limits This is where the good practice guidelines become

A critical aspect of GeoSS practice is the standardisation of pile termination to ensure geotechnical capacity: Jacking Force: The required jacking force ( cap P sub j

Monitoring data should be reviewed daily, and trigger levels should be established in advance. If trigger levels are exceeded, piling operations must be paused pending investigation and mitigation. For jacked piles specifically, a thorough site investigation

Practitioners must be vigilant about specific risks associated with displacement piles in Singapore's soft clay or sedimentary formations:

Jacked piling has become a staple of Singapore’s urban construction landscape. Favoured for being vibration-free