PTU B.Tech CIVIL 6th Semester May 2019 71084 FOUNDATION ENGINEERING Question Papers

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Total No. of Pages : 02

Total No. of Questions : 09

B.Tech.(CE) (2011 Onwards) (Sem.-6)

FOUNDATION ENGINEERING

Subject Code : BTCE-603

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M.Code: 71084

Time: 3 Hrs.

Max. Marks : 60

INSTRUCTION TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.

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2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

Q1) Answer briefly :

1. What do you understand by significant soil exploration?

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2. List down factors affecting bearing capacity for soils.
3. Define safe bearing capacity
4. Define Floating foundation
5. List down effects of negative skin friction.
6. Discuss briefly utility of batter piles.

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7. List out the various methods of site exploration.
8. Define allowable bearing capacity.
9. Calculate the active earth pressure given that C = 20kN/m² and unit weight of the soil being 20kN/m³ for a vertical cut of depth 3 m. The soil is cohesion- less soil.
10. Write assumptions of coulomb's theory.

SECTION-B

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Q2) Write short note on bore log report with neat sketch.

Q3) Write the essential features and applications of Rotary sampler.

Q4) A circular foundation is 2.4 m diameter. If the depth of foundation is 1 m, determine the net allowable load. Take c = 30 kN/m² and unit wt. = 19.0 kN/m³ , f = 15° and factor of safety as 3.0. Use Terzaghi's equation and assume local shear failure. Take value of Nc, Nq and Ny as 12.9, 4.4 and 2.5 respectively.

Q5) Explain the parts of a Pneumatic caisson with figure.

Q6) Give comparison of Rankine's and Coulomb's theory.

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SECTION-C

Q7) Derive bosussinesq equation for a point load.

Q8) Define pile foundation. Discuss about the types of pile and their functions.

Q9) What are the different methods of soil stabilization? Explain with neat sketches.

NOTE : Disclosure of identity by writing mobile number or making passing request on any page of Answer sheet will lead to UMC case against the Student.

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