Question
Download Solution PDFA fine grained soil has liquid limit of 55 and plastic limit of 20 as per plasticity chart. According to IS classification, the soil is represented by which of the following letter symbols?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- Plasticity index of soil, IP = WL – WP
- Plasticity index of A-line, IP = 0.73 ( WL - 20 )
Calculation:
Given,
Liquid limit ( WL) = 55%
Plastic limit (Wp) = 20%
IP of soil = WL – WP = 55 - 20 = 35%
IP of A-line = 0.73 (WL -20) = 0.73 (55 - 20) = 25.55%
IP of soil > IP of A-line, So it will lie above A-line and also WL > 50%,
∴ Soil is CH.
Last updated on May 28, 2025
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