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ENEN20002 Earth Processes for Engineering

Marking Scheme for Report on Practical Exercise
Item Marking criteria Marks
1 Visual Classification
a) How can you use the visual classification method to identify a coarse-grained
soil sample?
b) How can you use the visual classification method to identify a fine-grained soil
sample?
c) How can you use the visual classification method to identify the level of plasticity
fine-grained soil sample?
2
2
4
2 Grain Size Distribution (Sieve Analysis)
a) Calculations leading to cumulative % passing.
b) Plotting of Grain Size Distribution curve (using any graphing software)
c) Selection of D10, D30, and D60 (Show on Plot).
d) Calculation of Cu.
e) Calculation of Cc.
f) Explain the physical significance of Cu & Cc, accounting for their differences.
g) Conclude on USC symbol for coarse-grain soil.