4- The Atterberg limits for a clay soil used for an earth dam are liquid limit 60%, plastic limit 40%, and shrinkage limit 25%. If a specimen of the soil of volume 10 cm3 at the liquid limit has a volume of 6.5 cm3 when dried, what would be the specific gravity of the soil particles?

Sr B. ( A Soil Specimen has the following characteristics: % passing No.4 sieve = 85 % passing No.200 sieve = 11 D60 = 2 mm D30=0.35 mm D₁0 = 70 μm D8=2 μm L.L = 36% P.L = 31% 1. Classify the specimen according to the Unified Soil Classification System (USCS). Assign the group name and the group symbol. 2. Determine the soil activity. 3. Determine the soil Liquidity index and consistency index if wc = 26%.

The indicative properties of soil types A, B, and C were determined as follows: soil cil soil b 35% 60% 20% 28% 25% 43% 27% 40% 100% 110% 2.63 2.7 49% 26% 35% 10% 45% 2.65 soil A Property Liquidity limit Plasticity limit Percentage of clay materials moisture content Degree of Shiism Specific weight Either type 1 is more effective 2 Its edge density is greater 3 Greater overall density 4 Its porosity is greater .5 Classify soil according to the plasticity diagram.