| | Requirement / Purpose | | :--- | :--- | | BS EN 12699:2015 | Execution of special geotechnical works – Displacement piles. Applies to jacked piles installed without excavation. | | Eurocode 7 | Geotechnical design principles for pile capacity and structural integrity. | | BCA Circular APPBCA-2022-15 | Requirements and guidelines for driven or jacked piles, including heave monitoring and risk-based approaches. | | CP4 | Pile designs must satisfy safety factor against failure, settlement limits, and adequate structural capacity for installation forces. | | BCA/IES/ACES/GEOSS Circular 2016 | Mandates ground investigation, load tests, and quality control for building foundations, with specific testing frequencies and safety factors. |
Before placing or advancing a piling frame, the ground of the worksite must be:
stems from minimal environmental impact (low noise and vibration) and cost-effectiveness. Installation must strictly adhere to and specific local practices to ensure safety and structural integrity . Key Installation Practices & Termination Criteria | | Requirement / Purpose | | :---
Jacked piling is significantly quieter than impact driving. In residential areas, jack-in piles are preferred specifically to minimise disturbance because they do not cause vibration and noise compared to other piling tools. Nevertheless, noise monitoring may be required near noise-sensitive receptors such as hospitals and schools.
: Employing an installation dolly is permitted, provided the structural engineer verifies that the top of the pile can safely be set above the finalized design cut-off level. Essential Structural Design Rules | | BCA Circular APPBCA-2022-15 | Requirements and
Calibrated final termination "set" with extended holding times. Termination and "Set" Criteria
18-storey residential tower, Punggol Northshore District. Geology: Fill (2 m) over Kallang Formation marine clay (12 m) over Old Alluvium (dense, N=60+). Challenge: Piles required termination in Old Alluvium, but adjacent pile driving caused heave in earlier phases. | Before placing or advancing a piling frame,
Eliminates risk to adjacent historic structures, mass rapid transit (MRT) lines, and sensitive utility mains.