The following are the results of a sieve and hydrometer analysis.

Analysis	Sieve number/ grain size	Percent finer
Sieve	40	100
	80	96
	170	85
	200	80
Hydrometer	0.04 mm	59
	0.02 mm	39
	0.01 mm	26
	0.005 mm	15
	0.0015 mm	8

a. Draw the grain-size distribution curve.
b. Determine the percentages of gravel, sand, silt, and clay according to the MIT system.
c. Repeat Part b according to the USDA system.
d. Repeat Part b according to the AASHTO system.

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