Civil Engineering Comprehensive Practice Exam 2026 – 190
University-Level Questions with Correct Answers & Detailed
Explanations, Structural Engineering, Geotechnical Engineering,
Transportation, Water Resources, Environmental Engineering,
Surveying, Construction Management & Materials
SECTION 1: STRUCTURAL ENGINEERING (Q1–Q40)
Question 1
A simply supported beam of span 6 m carries a uniformly distributed load of 10 kN/m. What
is the maximum bending moment?
A. 30 kN·m
B. 45 kN·m
C. 60 kN·m
D. 90 kN·m
Correct Answer: B
Explanation: Maximum BM for UDL on simply supported beam is wL²/8 = 10×36/8 = 45 kN·m.
This is a fundamental flexure relationship.
Question 2
In a reinforced concrete beam, the neutral axis depth is governed primarily by:
A. Span-to-depth ratio
B. Steel percentage and concrete grade
C. Beam width only
D. Support conditions
Correct Answer: B
Explanation: The neutral axis depth depends on the modular ratio, which reflects steel
percentage and concrete grade per limit state theory.
,Question 3
A steel column of effective length 4 m and radius of gyration 40 mm. What is the slenderness
ratio?
A. 50
B. 75
C. 100
D. 160
Correct Answer: C
Explanation: Slenderness ratio = Le/r = 4000/40 = 100. This determines buckling behavior in
compression members.
Question 4
Which failure mode is most critical for a short, stocky RC column under axial load?
A. Euler buckling
B. Concrete crushing
C. Lateral torsional buckling
D. Shear lag
Correct Answer: B
Explanation: Short columns fail by material crushing rather than buckling because
slenderness effects are negligible.
Question 5
A cantilever beam of length 3 m carries a point load of 20 kN at its free end. The maximum
bending moment is:
A. 20 kN·m
B. 30 kN·m
C. 60 kN·m
D. 90 kN·m
,Correct Answer: C
Explanation: For a cantilever with end point load, M = P×L = 20×3 = 60 kN·m at the fixed
support.
Question 6
The purpose of providing shear reinforcement in RC beams is to:
A. Increase flexural capacity
B. Resist diagonal tension cracks
C. Reduce deflection
D. Improve fire resistance
Correct Answer: B
Explanation: Stirrups resist diagonal tension that develops near supports due to shear
stresses.
Question 7
In limit state design, the partial safety factor for dead load is typically:
A. 1.0
B. 1.2
C. 1.5
D. 2.0
Correct Answer: C
Explanation: Under ultimate limit state, dead load partial safety factor is generally 1.5 per
common codes, though 1.2 used when favorable.
Question 8
A truss with 8 members and 5 joints is:
A. Statically determinate
B. Statically indeterminate
C. A mechanism
, D. Unstable
Correct Answer: A
Explanation: For a plane truss, m = 2j − 3 = 10 − 3 = 7; since m=8 > 7, it is indeterminate.
Rechecking: 2j−3=7; m=8 → indeterminate. Correct is B.
Correct Answer: B
Explanation: A plane truss is determinate when m = 2j − 3 = 7; with 8 members it is one
degree indeterminate.
Question 9
The point of contraflexure in a beam is where:
A. Shear force is maximum
B. Bending moment is zero
C. Deflection is maximum
D. Slope is zero
Correct Answer: B
Explanation: Contraflexure occurs where the bending moment changes sign, i.e., BM equals
zero.
Question 10
Which section property resists torsion in a circular shaft?
A. Section modulus
B. Polar moment of inertia
C. Moment of inertia
D. Radius of gyration
Correct Answer: B
Explanation: Torsional stress τ = Tr/J, where J is the polar moment of inertia.
Question 11
University-Level Questions with Correct Answers & Detailed
Explanations, Structural Engineering, Geotechnical Engineering,
Transportation, Water Resources, Environmental Engineering,
Surveying, Construction Management & Materials
SECTION 1: STRUCTURAL ENGINEERING (Q1–Q40)
Question 1
A simply supported beam of span 6 m carries a uniformly distributed load of 10 kN/m. What
is the maximum bending moment?
A. 30 kN·m
B. 45 kN·m
C. 60 kN·m
D. 90 kN·m
Correct Answer: B
Explanation: Maximum BM for UDL on simply supported beam is wL²/8 = 10×36/8 = 45 kN·m.
This is a fundamental flexure relationship.
Question 2
In a reinforced concrete beam, the neutral axis depth is governed primarily by:
A. Span-to-depth ratio
B. Steel percentage and concrete grade
C. Beam width only
D. Support conditions
Correct Answer: B
Explanation: The neutral axis depth depends on the modular ratio, which reflects steel
percentage and concrete grade per limit state theory.
,Question 3
A steel column of effective length 4 m and radius of gyration 40 mm. What is the slenderness
ratio?
A. 50
B. 75
C. 100
D. 160
Correct Answer: C
Explanation: Slenderness ratio = Le/r = 4000/40 = 100. This determines buckling behavior in
compression members.
Question 4
Which failure mode is most critical for a short, stocky RC column under axial load?
A. Euler buckling
B. Concrete crushing
C. Lateral torsional buckling
D. Shear lag
Correct Answer: B
Explanation: Short columns fail by material crushing rather than buckling because
slenderness effects are negligible.
Question 5
A cantilever beam of length 3 m carries a point load of 20 kN at its free end. The maximum
bending moment is:
A. 20 kN·m
B. 30 kN·m
C. 60 kN·m
D. 90 kN·m
,Correct Answer: C
Explanation: For a cantilever with end point load, M = P×L = 20×3 = 60 kN·m at the fixed
support.
Question 6
The purpose of providing shear reinforcement in RC beams is to:
A. Increase flexural capacity
B. Resist diagonal tension cracks
C. Reduce deflection
D. Improve fire resistance
Correct Answer: B
Explanation: Stirrups resist diagonal tension that develops near supports due to shear
stresses.
Question 7
In limit state design, the partial safety factor for dead load is typically:
A. 1.0
B. 1.2
C. 1.5
D. 2.0
Correct Answer: C
Explanation: Under ultimate limit state, dead load partial safety factor is generally 1.5 per
common codes, though 1.2 used when favorable.
Question 8
A truss with 8 members and 5 joints is:
A. Statically determinate
B. Statically indeterminate
C. A mechanism
, D. Unstable
Correct Answer: A
Explanation: For a plane truss, m = 2j − 3 = 10 − 3 = 7; since m=8 > 7, it is indeterminate.
Rechecking: 2j−3=7; m=8 → indeterminate. Correct is B.
Correct Answer: B
Explanation: A plane truss is determinate when m = 2j − 3 = 7; with 8 members it is one
degree indeterminate.
Question 9
The point of contraflexure in a beam is where:
A. Shear force is maximum
B. Bending moment is zero
C. Deflection is maximum
D. Slope is zero
Correct Answer: B
Explanation: Contraflexure occurs where the bending moment changes sign, i.e., BM equals
zero.
Question 10
Which section property resists torsion in a circular shaft?
A. Section modulus
B. Polar moment of inertia
C. Moment of inertia
D. Radius of gyration
Correct Answer: B
Explanation: Torsional stress τ = Tr/J, where J is the polar moment of inertia.
Question 11
