Geotechnics

Geotechnics Void RatioPorosityDegree of saturationMoisture contentUnit weight Soil CompositionFor a soil, the following are given: Gs = 2.67, moist unit weight = 17.6kN/m^3, and moisture content of 10.8%. Determine Dry unit weightVoid ratioPorosityDegree of saturationProblem PROBLEM

For a given soil, the maximum and minimum void ratio of 0.78 and 0.43 respectively. Given that Gs = 2.67, determine the dry unit weight of the soil when the relative density is 65%.Problem A saturated soil used to determine the shrinkage limit has initial volume of 20.2cm^3, final volume of 14.3cm^3, mass of wet soil of 34g and mass dry soil of 24g. Determine the shrinkage limit.Problem A loose, uncompacted sand fill 1.8m depth has a relative density of 40% laboratory tests indicated that the minimum and maximum void ratios of the sand are 0.46 and 0.90 respectively. Specific gravity of the solids of the sand is 2.65. Find the dry density and the decrease in the thickness of 1.8m fill?Problem Following are the results of a field unit weight determination test using the sand cone method.Dry unit weight of sand = 16.36kN/m^3Wt. of sand to fill the cone = 11.15NWt. of jar + cone+ sand (before use) = 58.9NWt. of jar + cone + sand ( after use) = 27.65NWt. of moist soil from the hole = 32.55NMoisture content of moist soil = 11.6%Compute the dry unit of soil from the field and unit weight of compaction in the field.Problem Following are the results from the liquid and plastic limit test for a soil.No. of blowsmoisture content %1636.52033.12827Plastic limit = 12.2%Compute the liquid limitCompute the plasticity indexCompute the liquidity index if the in-situ moisture content is 26.5%Compute the consistency indexProblem

A saturated soil has the following characteristicsInitial volume = 19.65cm^3Final volume = 13.5cm^3Mass of wet soil = 36gMass of dry soil = 25gDetermine the shrinkage limitDetermine the shrinkage ratioDetermine the sp.gr. of the soilProblem USDAUSCSAASHTOSoil classification USDA

USCS

AASHTO

AASHTO

PROBLEM

Given soil having the particle size distribution as follows: 8& sand, 20% gravel, 48% silt and 24% clay. Classify the soil using USDA.PROBLEMPROBLEM