Building Engineering Building Engineering MCQ 4 â Questions and Answers
Question 1: What is the 'modulus of elasticity' (Young's modulus) for structural steel approximately equal to?
- 10,000 ksi
- 15,000 ksi
- 29,000 ksi (Correct answer)
- 57,000 ksi
Correct answer: 29,000 ksi
The modulus of elasticity for structural steel is approximately 29,000 ksi (200 GPa), defining its stiffness in the elastic range.
Question 2: What does 'LEED certification' evaluate in buildings?
- Structural load-carrying capacity
- Sustainability and environmental performance (Correct answer)
- Fire resistance ratings of assemblies
- Seismic performance and resilience
Correct answer: Sustainability and environmental performance
LEED (Leadership in Energy and Environmental Design) is a green building rating system assessing sustainability across energy, water, materials, and indoor quality.
Question 3: What is the purpose of a 'transfer beam' in building construction?
- To transfer lateral wind loads to shear walls
- To carry loads from columns above that cannot continue to the foundation (Correct answer)
- To bridge expansion joints between building sections
- To support curtain wall panels between floors
Correct answer: To carry loads from columns above that cannot continue to the foundation
Transfer beams redirect vertical loads from upper columns that are offset or discontinued, carrying them to other supporting elements below.
Question 4: In acoustics, what unit is used to measure sound intensity level?
- Hertz (Hz)
- Pascal (Pa)
- Decibel (dB) (Correct answer)
- Watt per meter squared (W/m²)
Correct answer: Decibel (dB)
Decibels (dB) express sound intensity on a logarithmic scale relative to a reference pressure of 20 ÎźPa, the threshold of human hearing.
Question 5: What is 'creep' in concrete structures?
- Rapid cracking due to thermal shock
- Gradual long-term deformation under sustained load beyond elastic strain (Correct answer)
- Movement of reinforcement bars under cyclic loading
- Surface erosion from water infiltration
Correct answer: Gradual long-term deformation under sustained load beyond elastic strain
Creep is the time-dependent increase in strain under constant sustained stress, causing prestressed members to lose force and deflections to increase over years.
Question 6: Which system provides lateral stability against wind and seismic forces in a steel-framed building?
- Gravity frame
- Moment-resisting frame or braced frame or shear wall (Correct answer)
- Transfer slab
- Composite deck
Correct answer: Moment-resisting frame or braced frame or shear wall
Lateral force-resisting systemsâmoment frames, braced frames, or shear wallsâare designed specifically to resist horizontal loads from wind and earthquakes.
Question 7: What does 'soil liquefaction' describe in geotechnical engineering?
- The process of soil drying and shrinking under drought conditions
- Loss of soil strength when saturated cohesionless soil behaves like a liquid during seismic shaking (Correct answer)
- Chemical dissolution of limestone by groundwater
- Consolidation of clay under building loads
Correct answer: Loss of soil strength when saturated cohesionless soil behaves like a liquid during seismic shaking
Liquefaction occurs when seismic vibrations cause pore water pressure in saturated sand to rise, temporarily eliminating effective stress and bearing capacity.
Building Engineering Building Engineering MCQ 4
What is the 'modulus of elasticity' (Young's modulus) for structural steel approximately equal to?