0 votes 0 votes As per Indian Standard Soil Classification System (IS: $1498 – 1970$), an expression for $\textbf{A-line}$ is $I_p=0.73(w_L-20)$ $I_p=0.70(w_L-20)$ $I_p=0.73(w_L-10)$ $I_p=0.70(w_L-10)$ Soil Mechanics gate2014-ce-2 soil-mechanics geotechnical-engineering indian-standard-soil-classification-system + – Milicevic3306 asked Mar 25, 2018 • recategorized Nov 18, 2020 by soujanyareddy13 Milicevic3306 11.9k points answer See all 0 reply