On five-cycle semilogarithmic paper, plot the grain size distribution curves from the following mechanical analysis data on the six soils, A through F. Determine the effective size as well as the uniformity coefficient and coefficient of curvature for each soil. Determine also the percentages of gravel, sand, silt, and clay according to (a) ASTM, (b) AASHTO, (c)USCS, and (d) the British Standard.