Civil Engineering MCQAE Level Civil Engineering
In the Unified Soil Classification System, the A-line equation on the plasticity chart is:
Soil MechanicsSoil Mechanics and Foundation EngineeringHARD
Choose the correct answer
A
Ip = 0.73(wL - 20)
B
Ip = 0.9(wL - 8)
C
Ip = wL + 20
D
Ip = 20 - 0.73wL
Correct Answer
A. Ip = 0.73(wL - 20)
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Casagrande's A-line separates clays from silts: PI = 0.73(LL - 20).
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