B.TechSemester 52024-25Geotechnical EngineeringBCE501
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Geotechnical Engineering (BCE501) - AKTU Question Paper 2024-25

B.Tech · Semester 5 · Free PDF Download

This is the official AKTU Geotechnical Engineering Previous Year Question Paper for B.Tech Semester 5, academic session 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech
Semester:Semester 5
Session:2024-25
University:AKTU / UPTU

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Questions Asked in 2024-25

Geotechnical Engineering (BCE501) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 2 x 07 = 14
  • a
    List the three main phases of soil composition?
  • b
    Define flocculated and dispersed soil structures
  • c
    State Darcy’s Law and explain the significance of hydraulic conductivity
  • d
    Write two measures to control seepage in earth dams
  • e
    State the assumptions of Terzag hi's one-dimensional consolidat ion theory
  • f
    Differentiate between direct sh ear test and a triaxial shear test
  • g
    State the difference between active and passive earth pressure
Section BAttempt any three of the following: 07 x 3 = 07
  • a
    Explain the significance of Atterberg limits (liquid limit, plastic limit, and shrinkage limit) in soil mechanics. How are they determined , and how do they help classify soils?
  • b
    A soil sample is partially saturated with a degree of satura tion of 80%. The unit weight of the soil is 18 kN/m 3 above the water table and 20 kN/m3 below. Calculate the effective stress at a depth of 4 m, given that the water table is 2 m below the surface
  • c
    Explain Proctor needle met hod and discuss its significance i n quality control of soil compaction
  • d
    Describe the Mohr-Coulomb fa ilure criterion in detail
  • e
    Discuss Coulomb’s theory of earth pressure and derive the ex pression for active earth pressure consider ing wall friction. How does i t differ from Rankine’s theory?
Section CAttempt any one part of the following: 07 x 1 = 07
  • a
    Classify the structural and e ngineering behavior differences a m o n g kaolinite, illite, and montmori llonite. Why is montmorillonite more problematic in civil engineering applications?
  • b
    A soil sample has a porosity of 40% and is fully saturated. The specific gravity of soil solids is 2.65. Calculate the saturated unit we ight and submerged unit weight
  • a
    Explain the concept of total stress, effective stress, and n eutral stress in soils. Discuss their interrela tionships and their significance in geotechnical engineering design
  • b
    Describe critical hydraulic gradient. Derive the expression for the critical hydraulic gradient
  • a
    A clay layer 6m thick is subjected to a uniform pressure of 40kPa. The coefficient of consolidation (Cv) is 5×10 −4 cm2/s , and drainage occurs on both sides. Calculate the time required for 50% consolidation
  • b
    Illustrate the difference be tween primary consolidation and secondary consolidation. Discuss the physical processes governing each an d the time scales over which they occur
  • a
    Examine the mechanisms leading to liquefaction and the facto rs influencing it
  • b
    A point load of 200kN acts on a horizontal soil surface. Cal culate the vertical stress at a depth of z=3m and at a radial distance r=4m from the point of application. Use Boussinesq’s equation
  • a
    Derive an expression for active earth pressure for a cohesiv e-frictional soil (c-ϕ) using Rankine’s theory
  • b
    Illustrate the steps involved in drawing the pressure distribution diagram for a retaining wall using Coulomb’s graphical method

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

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