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doi:10.3850/9789628014194_0014
Construction of “Large Diameter Hand Dug Caisson” in Downtown of Singapore
Sze Tat Ng1, Akira Wada2 and Sei Wakabayashi1
1Obayashi Corporation-Woh Hup Pte. Ltd. Joint Venture, 18 Cross Street #06-01,
Marsh & McLennan Centre, Singapore 048423
2Asia Georesearch Agency (AGA), 120 Lower Delta Road, #02-12 Cendex Center,
Singapore 169208
ABSTRACT
In contrast with the Modern Mechanized Deep Piling Operation, safety seems to be the major concern on Hand Dug Caisson Work. However, with our up-to-day technical knowhow incorporated with the traditional method, Hand Dug Caisson has proved itself to be in line as effective as, if not better than, the other foundation systems in all aspects including Safety, Quality, Design and Implementation. Deep Hand Dug Caisson Foundation Work with total capacity of 215,000 metric ton in full scale Instrumentation with close monitoring scheme has been successfully built in downtown of Singapore. With equal safety standard as others, Hand Dug Caisson can also be the most Environmental Friendly type of deep foundation system.
Keywords: Environment impact, Foundation, Hand dug caisson, Instrumentation and monitoring, Piling, Safety.
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