Gte Mid 1 Qns.docx

Git mid Unit 1 1. Explain the Effect of compaction on soil properties. 2. Explain in detail about three clay minerals. 3. A saturated soil sample has a water content of 40 % . If the specific gravity of solids is 2.67 , determine the void ratio, saturated density and submerged density? 4. Write a short notes of compaction with neat sketchs? Unit 2 1 . The natural moisture content of an excavated soil is 32%. Its liquid limit is 60% and plastic limit is 27%. Determine the plasticity index of the soil , consistency limit and liquidity index? 2 . What are the different Atterberg limts? Explain them with neat sketch?

3.Write a short note on Hydrometer method. 4. Write short notes of Unified classification? Unit 3 1. What is quick sand condition and derive the relationship for critical hydraulic gradient of sandy soil. 2 . A soil strata consists of 3 layers of thickness 1m, 1.5m and 2.0 m having the coefficient of permeability of 2 X 10-3cm/s, 1.5 X 10-3cm/s and 3 X 10-3cm/s respectively. Estimate the average co-efficient of permeability in the direction i) parallel to the bedding plane ii) vertical to the bedding plane. 3. Derive an equation, for determining soil permeability using variable head permeability test. ? 4.Derive an equation for determining soil permeability using constant head permeability test ?