| Check | Question | Years Appeared |
|---|---|---|
| x | Define soil, soil mechanics and geotechnical engineering. | 2023, 2021, 2024 |
| x | Write down the importance of studying geotechnical engineering. | 2023, 2021, 2024 |
| x | As a geotechnical engineer, what are the issues you need to address while designing substructures? | 2023 |
| x | How does the knowledge of soil mechanics help you to design structures/buildings? | 2021, 2024 |
| x | Define foundation of civil engineering structures and the foundation engineering. | 2024 |
| x | Soil contains all the three phases of materials, explain. Prove that S = wGs\e * 100. | 2023, 2021 |
| z | Write down your understanding about the soil compaction and the relative soil compaction (C_R). | 2023, 2021 |
| x | Compute the value of C_R for the y_{dmax} value obtained from soil compaction curve is 18.85 kN/m^3 and y_d from the field test is 16.96 kN/m^3. Give your opinion on the computed C_R value as a geotechnical engineer. | 2023 |
| x | Define stresses in soils. What do you mean by the total stress and effective stress in soils. Compute the total stress and the effective stress of point A in the following Figure-1. | 2023, 2021, 2024 |
| x | Why the stresses in soils are important to you as a geotechnical engineer? | 2021, 2024 |
| x | What is consolidation of soils? | |
| x | Briefly describe the parts of consolidation curves obtained from the consolidation test data in the geotechnical laboratory. Describe the consolidation status in the field. | 2023, 2024 |
| Write short notes on the following: i) Permeability of soils ii) Flow lines and equipotential lines iii) Flownet analysis |
2023, 2021, 2024 | |
| x | Write down the importance of permeability, as a soil property for the earth structure and the earth supported structures. | 2021, 2024 |
| x | Write down the differences between soils/rocks and other civil engineering materials like reinforcement bars. | 2023, 2021 |
| x | Define porosity (n) and void ratio (e). Establish relationship between e and n. | 2023 |
| x | Find the value of degree of saturation and unit weight | 2023, 2021 |
| x | Define incidental compaction of soils. Why, as a geotechnical engineer, you cannot rely on the incidental comapaction of soils for engineering purposes. | 2023, 2021, 2024 |
| x | Describe the different methods for the compaction of soils while using standard compacting equipment. | 2021 |
| x | Write down your understanding on the standard proctor compaction test of soils. Why did the standard proctor compaction test need to be modified? A standard proctor compaction has been performed, compute: i) Dry unit weight, and moisture content ii) determine moisture content for s = 80% and s = 100% using computed dry unit weight |
2023, 2024 |
| x | What will be the value of dry unit weight in the field for a value of CR >= 95%? | 2024 |
| x | Define shear failure. Write down the importance of shear failures in soils. Briefly describe the different modes of shear failures. | 2023, 2021 |
| x | Describe in brief the simplifying assumptions for computing stresses in soils. | 2023, 2024 |
| x | Differentiate between major principal stress and the minor principal stress. | 2023 |
| x | The vertical, the horizontal, and the shear stresses at a certain point are given, determine the magnitude and the direction of the major and the minor principal stress. | 2023 |
| Determine the maximum shear stress of the soil to prevent shear failure of the slop. | 2024 | |
| x | Define Darcy's law. Differentiate between the laminar flow and the turbulent flow of water through soils. Under what circumstances, Darcy's law is valid for the flow of water through soil? | 2023, 2021 |
| How do you define the co-efficient of permeability from the Darcy's law? Write down the factors governing co-efficient of permeability. | 2021 | |
| x | Compute magnitude of vertical effective stress at a point considering both geostatic and induced stress. | 2023 |
| x | Write down your understanding about the settlement (or differential settlement) and the subsidence in soils. Briefly describe the different types of soil settlement. | 2023, 2021, 2024 |
| x | Describe the issues concerned to the geotechnical engineer regarding soil settlement. | 2024 |
| Define seepage, flow line, equipotential line, flow tube channel and flow element field in a flownet of seepage analysis in soils. | 2023, 2021, 2024 | |
| Describe the importance of seepage flow. | 2024 | |
| Prove that the same quantity of water flows through each flow element in flow tubes of a flow net if all the flow elements are square or same width to length ratio. | 2023 | |
| Write down the reasons for soil samples disturbance and their effect on the consolidation test results of soils. | 2023, 2021 | |
| Briefly describe with neat sketches, the plastic and elastic deformation of soil sample in consolidation test results. Or, describe them under applied load by considering an element of soil sample at particular depth and the consolidation data plot for that element of soil sample. | 2023, 2021 | |
| Determine whether soil is normally consolidated or over consolidated. Compute the value of compression index and recompression index. | 2023 | |
| Determine preconsolidation stress by casagrade procedure. | 2024 | |
| Describe the modulus of elasticity, shear modulus, and poission's ratio used for stress analysis. | 2021 | |
| What do you mean by the negative pore water pressure in soils? | 2021 | |
| Define pre-consolidation stress, compressing index, and re-compression index. How to determine the value of these parameters from the consolidation data plot (curve)? | 2021 | |
| Write down your understanding on the eight-volume relationship of phases of a soil element. Draw the phase diagram and define the followings from the phase diagram: i) Moisture content ii) Unit weight iii) Porosity iv) Void ratio |
2024 | |
| x | Differentiate between the compaction of soils and teh consolidation of soils. | 2024 |
| x | Why do you require specialized compaction equipment for the compaction of soils? | 2024 |
| x | Describe the ways of improving the engineering properties of soils by compacting the fill. As a site engineer, how do you ensure the proper compaction of fill in the field? | 2024 |
| Compute seepage loss from reservoir through the stratum. | 2024 | |
| Explain why the GWT is very important for soil engineering related problems. Describe the different procedure to assess GWT. | 2024 | |
| Write down the different methods of computing induced stresses in soils. Explain the differences between Boussinesq's method and Westergoard's method for computing induced stresses. | 2024 | |
| Compute vertical stress at certain depth directly under the center of concrete slab. | 2024 | |
| Calculate total seepage lost per unit length, pore pressure at point A. | 2024 |