The Indian standard soil classification system ,(ISCS) was first developed in___________
The Indian standard classification system (ISCS) was first developed in 1959 and revised in 1970.
According to ISCS , fine grained soils are subdivided in to___________
Fine grained soil are subdivided into 3 types
1. Inorganic silts and very fine sands
2. Inorganic clays
3. Organic silts and clay and organic matter.
The ISCS classifies the soil in to__________
The ISCS classifies the soil into 18 groups as against 15 groups of USCS.
Laboratory classification of fined grained soil is done with the help of________
Laboratory classification criteria of fine grained soil is done by plasticity chart.
The A-line, in unified classification system table has the equation of__________
The A-line, dividing the inorganic clay from silt and organic soil has the equation: IP=0.73(WL-20).