Geotechnical Engineering Journal of the SEAGS & AGSSEA ISSN 0046-5828
Vol. 52 No. 1 March 2021
Jack-in Pile Design and Construction for High-rise Buildings – A Malaysian Consulting Engineer’s Perspective
by C. M. Chow and Y.C. Tan
ABSTRACT: Large diameter jack-in pile foundation for high-rise buildings has been successfully adopted in Malaysia since the 1990s and currently, large diameter spun piles of up to 600 mm in diameter with working load up to 3200 kN have been successfully adopted for high-rise buildings of up to 45-storeys. This paper summarises some Malaysian experience in design and construction of high capacity jack-in pile system which has been successfully adopted for high-rise buildings in weathered granite and weathered sedimentary formation. Experiences gained throughout the years will be summarized including advantages and limitations of the system. Some results of static maintained load tests will also be presented illustrating clear differences in performance in different ground conditions. Recommendations on empirical correlations between ultimate shaft resistance (fsu) with SPT’N’ and preliminary guidance on ultimate end-bearing resistance (fbu) will also be discussed.
KEYWORDS: Jack-in pile, Weathered granite, Weathered sedimentary, Shaft resistance, End-bearing resistance.
