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CHAPTER: 5 SOIL CLASSIFICATION - Md Aftabur Rahman

Corps of Engineers and then by the Bureau of Reclamation in 1952 as the Unified Soil Classification System. Currently ASTM (D-2487) adopts it. The system uses six major symbols and four modifiers as in the following:

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CHAPTER: 4 PLASTICITY OF SOILS - Md Aftabur …

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CHAPTER: 5 SOIL CLASSIFICATION - Md Aftabur Rahman

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GI is reported in rounded integer number (say, GI=4.4≈4.0 and GI=4.5≈5.0) Table 5.1: AASHTO classification system 5.4 TEXTURAL CLASSIFICATION Texture means visual appearance of the surface of a material. The visual appearance of a soil is called its texture. The texture depends upon the particle size, shape of

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