Analytical Chem Soil HW Solutions 7

Analytical Chem Soil HW Solutions 7 - cumulative percentage...

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7 Sieve size, mm 6.3 3.3 2.0 1.2 0.6 0.3 0.15 0.063 Mass retained, g 0 0 30 39 28 28 16 11 Cumulative mass retained, g 0 0 30 69 97 125 141 152 Mass passing, g 269 269 239 200 172 144 128 117 % passing 100 100 88.8 74.3 63.9 53.5 47.6 43.5 The sedimentation test data are already part-processed, with the mass of soil in each size range expressed as a percentage of the 117g collected in the pan. This is slightly different from main text Example 1.5, in which raw data are given. The fraction of the pan sample smaller than a given size is given by 100% minus the
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Unformatted text preview: cumulative percentage in the larger size ranges. To convert this to a percentage of the total sample, we must multiply by 117g and divide by 269g. Hence Size, m <2 2-6 6-15 15-30 30-63 % of pan sample 0 48 29 14 9 Size, m 2 6 15 30 63 % of pan sample smaller than this size (48-48) = 0 (77-29) = 48 (91-14) = 77 (100-9) = 91 100 % of total sample smaller than this size 0 20.9 33.5 39.6 43.5 The particle size distribution curve is plotted in Figure Q1.6, using the data shown in bold type. Figure Q1.6: Particle size distribution curve...
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This note was uploaded on 12/28/2011 for the course CHM 4302 taught by Professor Stuartchalk during the Fall '11 term at UNF.

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