The A-line in the unified classification system table is used to determine the plasticity index (IP ) of soil sample on its liquid limit (WL ). The equation for the A-line is given as ______.

Questions › Category: Civil Engineering › The A-line in the unified classification system table is used to determine the plasticity index (IP ) of soil sample on its liquid limit (WL ). The equation for the A-line is given as ______.
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The A-line in the unified classification system table is used to determine the plasticity index (IP ) of soil sample on its liquid limit (WL ). The equation for the A-line is given as ______.

1. IP = 0.73 (WL- 20)          (Ans)
2. IP = 0.5 (20 – WL)
3. IP = 0.73 (40 – WL)
4. IP = WL – 40