MVSR ENGINEERING COLLEGE, NADERGUL, HYDERABAD-501510DEPARTMENT OF CIVIL ENGINEERING

FOUNDATION ENGINEERING – ASSIGNMENT-I (U-I&II)

1. A line load of 90kN/m run extends to a long distance. Determine the intensity of vertical stress at a point 1.5m below the surface, directly under the load and at a distance of 11m perpendicular to the line using Boussinesq’s theory.

2. Discuss the limitations of Westergaard’s stress distribution theory3. Distinguish between local shear and general shear failure 4. How to correlate the plate load test data to the actual foundations?5. What is contact pressure? How does that depend on the type of structure and type of soil? Sketch under a

rigid and flexible footing on cohesive and cohesionless soil, highlighting the differences.6. Explain pressure bulb and its significance. Draw a sketch for that under a point load7. What are the limitations of a plate load test?8. Explain allowable settlement and mention the values permissible as per IS code9. Sketch the vertical pressure distribution on a vertical plane at a distance ‘r’ from point load Q10. Explain safe and allowable bearing capacities of foundation. Which of these is more comprehensive? In a

given case the SBC was 280kPa and the safe pressure based on allowable settlement was 150kPa. Detemine the allowable bearing capacity.

11. Show the zones of plastic equilibrium considered in Terzaghi’s analysis. State which of these zones is considered to be a part of the foundation?

12. Write a note on Newmark’s chart.13. What is refusal? Is the site where refusal is reported, good for construction?14. A new marks chart with 20 concentric circles has its influence factor ad 0.002. Estimate the number of

radial lines in it.15. The increment in vertical stress directly below a point load applied to the ground surface was found to be

477.5kPa. Compute vertical stress under the same load at a point (2, 1, 1).16. Prove that the ultimate bearing capacity of shallow foundations on cohesive soil is independent of size of

the footing17. The net ultimate bearing capacity of a footing laid on cohesion less soil was found to be 100kPa. All other

parameters remaining same, compute qnf if the size is doubled.18. Differentiate between uniform and differential settlement. Which of them is detrimental to the structure?19. Explain corrections to SPT test20. Write a note on water table correction factors. The ultimate bearing capacity of a strip footing laid on the

ground surface on cohesionless soil is found to be 200kPa. Estimate the same if GWT is subsequently raised the ground level.

21. Explain the criteria for determining the bearing capacity I the soil.22. Explain shallow and deep foundations.23. Explain immediate and consolidation settlements.24. List the basic assumptions in Boussinesq’s theory of stress distribution.25. What is the basic principle involved in development of new marks chart?26. How is general shear failure different from local shear failure?

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MVSR ENGINEERING COLLEGE, NADERGUL, HYDERABAD-501510DEPARTMENT OF CIVIL ENGINEERING

FOUNDATION ENGINEERING – ASSIGNMENT-I (U-I&II)