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A concise overview of key formulas and definitions used in geotechnical engineering. It covers concepts such as void ratio, porosity, degree of saturation, unit weight, and density. Valuable for students and professionals seeking a quick reference guide to these fundamental principles.
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Void ratio equation - correct answer e = Vv/Vs Void Ratio Formula in terms of Porosity - correct answer n/ 1-n porosity formula - correct answer volume of air/ volume of soil porosity formula in terms of void ratio - correct answer e/ 1+e degree of saturation formula - correct answer S= Volume of water/ Volume of Voids Degree of Saturation in terms of e, Gs, and n - correct answer S= wGs/e moisture content - correct answer Weight of water/ weight of solid weight - weight of soil / weight of soil specific gravity - correct answer y/yw specific gravity of soil - correct answer Gs= weight of water/Volume of soil (Yw) Unit of weight/ Moist Unit Weight - correct answer y= Weight/Volume Unit of weight in terms of water content, Volume and weight of soil - correct answer y= weight of soil (1+water content)/ Volume unit weight in terms of dry unit weight - correct answer y= yd(1+water content)
Dry Unit Weight - correct answer Ws/V Dry Unit Weight - correct answer yd=GsYw/1+e Saturated Unit Weight - correct answer ysat=weight of soil + weight of water / Volume Saturated unit weight (γsat) in terms of void ratio - correct answer (Gs+e)yw/ 1+e Density soil (p) - correct answer p= mass/volume Density soil in terms of Void Ratio - correct answer P= (1+w)GsPw/ 1+e Dry Density - correct answer pd = Mass of soil/Volume Dry Density in terms of void ratio - correct answer pd=Gspw /1+e saturated Density - correct answer psat=(Gs+e)pw/1+e Effective Unit weight / submerged unit weight /Buoyant Unit weight - correct answer y' = ysat-yw Effective Unit weight / submerged unit weight /Buoyant Unit weight (2) - correct answer y'=(Gs-1 )yw /1+e Dry unit weight at zero air voids - correct answer yzav= Gsyw/1+wGs