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Engineering Geology for Construction MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Engineering Geology for Construction. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Engineering Geology for Construction chapter is particularly important for students studying Geological engineering. Page-7 section-1

Each section contains 100 MCQs on Engineering Geology for Construction .
61
Which geological structure can cause water seepage into tunnels?
Discuss
Answer & Solution
Answer: Option C
Solution:
Faults are fractures along which movement has occurred. They may act as conduits for groundwater, allowing seepage into excavations like tunnels.
62
Why is RMR (Rock Mass Rating) used in construction planning?
Discuss
Answer & Solution
Answer: Option C
Solution:
RMR is a geomechanical classification system that assesses rock mass quality based on parameters like UCS, RQD, and joint conditions.
63
Expansive clays pose a challenge in construction due to:
Discuss
Answer & Solution
Answer: Option B
Solution:
Expansive clays (like montmorillonite) absorb water and swell, causing heaving and structural damage to foundations and pavements.
64
Which rock type is ideal for dam foundations?
Discuss
Answer & Solution
Answer: Option C
Solution:
Granite is strong, impermeable, and durable, making it an excellent choice for critical structures like dams.
65
What effect does groundwater have on slope stability?
Discuss
Answer & Solution
Answer: Option C
Solution:
Groundwater increases pore water pressure and reduces effective stress, thereby reducing shear strength and slope stability.
66
Which method is commonly used to assess rock mass permeability?
Discuss
Answer & Solution
Answer: Option C
Solution:
The Lugeon test measures water permeability of rock masses by injecting water under pressure in a borehole section.
67
In road construction, what is the purpose of subgrade evaluation?
Discuss
Answer & Solution
Answer: Option C
Solution:
Subgrade evaluation checks the strength and stability of the foundation soil layer, which supports pavement and traffic loads.
68
A major cause of tunnel collapse in soft rock is:
Discuss
Answer & Solution
Answer: Option D
Solution:
Rock loosening near the excavation face leads to fallouts, particularly in soft, jointed, or weathered rocks.
69
Which tool helps determine the orientation of rock joints in the field?
Discuss
Answer & Solution
Answer: Option C
Solution:
A compass clinometer measures both azimuth (strike) and angle of dip of geological structures like bedding and joints.
70
What is the function of a retaining wall?
Discuss
Answer & Solution
Answer: Option C
Solution:
A retaining wall resists lateral earth pressure and is essential in slope protection, embankments, and basement excavations.