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damental problems of Soil Mechanics, such as soil classification, seepage through earth, and shear strength. It is safe to assume that the ALine on the plasticity chart is after Arthur”. Arthur Casagrande (19021981) Daniel Bernoulli 行走的土力學(xué)原理 沙灘騎車的土力學(xué)原理 David Macaulay, in his book underground (Houghton Mifflen, Boston, 1976), has illustrated the foundations and piping from the bottom up without soil. All facilities are built on, in or with earth materials. Thus, the science and engineering of soil and rock, and of the water and other fluids that permeate them are critical for addressing national issues such as infrastructure construction and reconstruction, waste management, resource discovery and recovery, mitigation of natural hazards and frontier exploration and development.