Q.1
14 Marks(b)
Write the importance of Shear strength in Civil Engineering.
(c)
List out various stages of Sub soil exploration and explain in details anyone.
Gujarat Technological UniversitySummer 2026 examination
GTU 3150615 Soil Mechanics Summer 2026 Question Paper & PDF
B.E. · Civil Engineering · Semester 5 · Subject code 3150615
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
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8 of 25 questions on this paper were also asked in other years. 4 more are types of question GTU sets again with new data. Each is marked below with the years it appeared.See all 33 repeated 3150615 questions, most asked first
Q.2
14 Marks(c)
Explain Boussinesq’s theory and its assumptions in detail.
OR
(c)
A strip footing of 3 m width is placed at 3.5 m depth below Ground Level. Determine ultimate bearing capacity using
i)Terzaghi’s Equation ( Nc = 5.7 , Nq= 1 Nγ = 0)and
ii)IS Code method ( Nc = 5.14 , Nq= 1 Nγ = 0). Take γ = 18 kN/m3 and c= 15
kN/m2. ɸ=0 .
Also asked in Winter 2025 Q4c, Summer 2025 Q3c, Winter 2023 Q2c OR, Summer 2023 Q4c OR
Q.3
14 Marks(a)
Write the limitation of Plate load test
(b)
Differentiate between general shear and punching shear failure.
(c)
A direct shear test was carried out on a soil sample and following results were obtained. Normal stress kN/m² 150 200 Shear stress kN/m² 110 120 Compute deviator stress if a triaxial test is carried out on the same soil with cell pressue of 150 kN/m².
Also asked in Summer 2023 Q5c
OR
(a)
Explain the concept of isobars and pressure bulb.
Also asked in Summer 2025 Q4a OR, Summer 2024 Q1a, Winter 2023 Q5b OR
(b)
Define adhesion factor. State its purpose in the design of piles in clay.
(c)
A point load of 150 kN acting at ground surface. Compute the vertical stress at 4 m depth along axis using Boussinesq’s eqation and Westergaard’s equation.
Q.4
14 Marks(b)
A 25 kN weight pile is inserted using single acting steam hammer with a free fall of 1.2 m. The avg. penetration of last 20 blow is 20 mm. Find the safe load using the ENR formula.
Also asked in Summer 2025 Q3b OR
(c)
Describe lab vane shear test with neat sketch.
OR
(a)
Define drift and shaft for direct method of exploration.
(b)
A vertical cut is made in a clay deposit having c= 30 kN/ m², ɸ=0 , γ = 17 kN/m³. Determine the maximum depth of cut so that the cut is stable. Take Sn= 0.26
Also asked in Summer 2025 Q4c OR, Summer 2024 Q3c OR
(c)
Write down the Procedure for Shear strength determination using Direct shear test with neat sketch.
Also asked in Summer 2025 Q5c
Q.5
14 Marks(a)
Differentiate between End bearing pile and Friction pile.
(c)
Describe Taylor’s stability number and its use in slope analysis.
Also asked in Summer 2023 Q3b OR
OR
(a)
Give characteristics of Black cotton soil.
(b)
Enlist various pile driving hammers and explain any one.
(c)
Explain various functions of geosynthetics with suitable applications.
More Soil Mechanics papers
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Other Semester 5 subjects
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About this paper
Official Gujarat Technological University (GTU) examination paper for Soil Mechanics (Summer 2026, B.E. · Civil Engineering, Sem 5). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.