IIMOISTUIC 6.4 The results of a standard Proctor test are given in the following table. a. Determine the maximum dry unit weight of compaction and the opti- mum moisture content. Given: Mold volume = 1/30 ft³. %3D 9546WN Chapter 6 Soil Compaction b. Determine the void ratio and the degree of saturation at the optimum moisture content. Given: G. = 2.69. %3D Weight of moist soil Moisture in the mold (lb) Trial no. content (%) 3.7 8.6 4.15 10.6m 4.69 12.5 4.62 14.9 4.02 16.7 3.63 18.3

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.