Question
Download Solution PDFAccording to IS classification system (plasticity chart), soil that falls above A-line and having liquid limit of 40 is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Fine grained soil are classified on the basis of plastic chart. Clay is found to exist above A-line whereas silt & organic soil found to exist below A-line.
Suffix and prefix used in soil classification:
|
Soil Type |
Prefix |
Soil Type |
Suffix |
|
Gravel |
G |
Well graded |
W |
|
Sand |
S |
Poorly graded |
P |
|
Silt |
M |
Clayey |
C |
|
Clay |
C |
Silty |
M |
|
Organic |
O |
Low compressibility |
L |
|
Peat |
Pt |
Intermediate compressibility |
I |
|
|
|
High compressibility |
H |
∴ A soil has a liquid limit of 40% and lies above the A-line when plotted on plasticity chart is CI.
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