Figure 15-32.-Data sheet for sieve analysis with prewashing.calculated from Stoke’s equation using correctedSPECIFIC GRAVITY TESTINGhydrometer reading and a nomographic chart.The procedures used to perform- the hydro-The specific gravity of a solid substance is themeter analysis are not discussed in this TRAMANratio of the weight of the solid to the weight ofbut are contained in ASTM D 422.an equal volume of water. In dealing with soils,15-25
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