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

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Percent Passing by Weight U.S. Standard Sieve No. or Particle Size Soil A Soil B Soil C Soil D Soil E Soil F 75 mm (3 in.) 38 (1-½) 19 (4) 9.5 (%) No. 4 100 100 70 49 100 91 87 36 27 81 100 20 82 70 No. 10 100 89 No. 20 80 99 No. 40 78 91 63 No. 60 74 37 No. 100 65 35 32 No. 140 60 No. 200 55 57 100 40 um 20 um 31 27 41 99 19 22 35 92 10 um 5 μm 2 um 1 μη 13 18 20 82 10 14 71 11 52 10 39