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2. Test Fill at Chek Lap Kok, Hong Kong
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4. Johnson S. J. 1968b. “Foundation precompression with vertical sand drains.” In Proc. ASCE Specialty Conf. on Placement and Improvement of Soils to Support Structures 53–86. New York: ASCE.
5. Johnson S. J. 1968c. “Precompression for improving foundation soils.” In Proc. ASCE Specialty Conf. on Placement and Improvement of Soils to Support Structures 9–52. New York: ASCE.