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1 Void ratios is define as Vv/Vs T 2 Porosidty is defined as Vv/Vw F 3 Water content is defined as Vw/Vs F 4 Saturated unit weight is defined as Ws/V F 5 Unit weight is the same as specific weight T 6 Dry Unit weight is defined as Ws/V T 7 Total unit weight is defined as Ws/V F 8 Ws means weight of solids T 9 Relative density is defined in terms of water contents F 10 Ws means weight of soils F 11 The LI indicated the field conditions of the soil T 12 The PI suggests the permeability of a clay T 13 The PI is taken from undisturbed soil samples F 14 Well-graded sands expected to compact well T 15 Gap-graded sands are expected to be difficult to compact T 16 Uniforly-graded sands do not erode easily F 17 Gap-graded sands make good filters F 18 Gap-graded sands make poor filters T 19 Gap-graded sands are expected to compact well F 20 Igneous rocks are expected to be harder than other T 21 Sedimentary rocks are, generally, softer than ingneous T 22 CH soils are more permeable than ML soils F 23 A-2-6 soils are less permeable than A-7 soils F 24 GC soils drain better than SW soils F 25 ML soils erode easily T 26 OH soils are not very compresible F 27 SC soils are less permeable than SM soils T 28 SP soils compact more easily than SW soils F 29 A-2 soils are similar in behavior to CH soils F 30 Ther is no relation between AASHTO system and the USCS system F 31 Gneiss is a sedimentary rock F 32 Loess is only found in China F 33 Glaciers slide back north when retreating F 34 Kames are snakelike hills formed of residual soils F 35 Saprolite refers to decomposed soils F 36 The worst earthquakes occur in fift zones in the crust of the earth F 37 The earth's crust is made of plates that are continually slowing down. F 38 Clay particles are stick because they stick to each other wih unbalanced charges F 39 Halloysite is an expansive clay F 40 Mica is a sedimentary rock F 41 Most soils have a Gs about equal to 3.65 F 42
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