D10 = 0. 078mm D30 = 0. 125mm D60 = 0. 55mm Cc = (D30)2 / [D10 x D60] = 0. 1252 / [0. 55 x 0. 078] = 0. 36422 & 1 Cu = D60 / D10 = 0. 55 / 0. 078 =7. 0513 & 6 If a befoul is polite-mannered-graded, it should gratify 1 &Cc & 3 Cu & 4 (for gravels) Cu & 6 (for sand) Note that, from our termination, Cc is greatly smaller than one. So by the constraints 1 < Cc & 3, we can determine that the experimenting befoul is not polite-mannered-graded, but out-of-sorts graded. And the Cu obtained is 7. 0513 > 6, which implies that the specimen should be sand but not gravels.
As we see our specimen contains 17. 16% of gravel which gratify the constraints of gravelly sand. So we may excite determine that the specimen is out-of-sorts-graded gravelly sand. (3) For the engineering contact of terminations, we may see that as sieve partition experiment (dry sieve) terminations in precedency of specimen in polite-mannered-graded or out-of-sorts graded on the account of their tittle extents and its extent distribution, so the termination can be an indicator of other engineering properties such as compressibility, scrape ability, and hydraulic conductivity which is considerable in composition engineering and geotechnical engineering.
In an engineering plan, the precedency of befoul repeatedly controls the plan and basis steep drainage of the predicament. For issue a out-of-sorts graded befoul accomplish possess reform drainage than a polite-mannered-mannered graded befoul consequently there are further nugatory spaces in a out-of-sorts graded befoul. And other issue is a polite-mannered-mannered graded befoul is able to be compacted further than a out-of-sorts graded befoul. Most images of projects may possess precedency requirements that must be met anteriorly the befoul to be used is accepted.
From the overhead termination, the specimen is classified as out-of-sorts-graded gravelly sand. The termination is advantageous for the image of use of the predicament in excite crop. These out-of-sorts graded stone is good-tempered-tempered for drainage but not as a skin of origin aid. The significance of the precedency of befoul is implicit so that befoul can be domiciled in incongruous use and accomplish not induce unwanted property in composition engineering or geotechnical engineering.