Geoss Good Practice For Installation Of Jacked Foundation Piles In Singapore Link [exclusive]

: Jacking continues until "practical refusal" is reached. A common "set" criterion is a downward movement of not more than 10 mm held for at least 30 seconds Re-jacking Process

The installation of jacked foundation piles is a popular solution for deep foundation systems in Singapore. By understanding the GEOS guidelines and good practices outlined in this article, contractors and engineers can ensure that jacked foundation piles are installed correctly, providing a reliable and safe foundation for buildings and structures. For more information, please refer to the relevant resources provided. : Jacking continues until "practical refusal" is reached

The Geotechnical Society of Singapore (GeoSS) guidelines for jacked foundation piles recommend a jacking force of 2 to 2.5 times the working load and define a set as less than 10 mm movement over 30 seconds. Key practices include monitoring pile verticality, conducting two consistent verification cycles, and implementing relief wells or pre-boring to mitigate ground displacement. Read the full guidelines at Course Hero . For more information, please refer to the relevant

(Note: As of 2026, direct GEOSS-specific jacked pile guidelines are integrated into SS EN 12699:2022 Singapore National Annex.) Read the full guidelines at Course Hero

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.