Structural Analysis and Design Flashcards
6 cards from real Building Engineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Structural Analysis and Design flashcards as text
What is the purpose of a grade beam in foundation design?
Answer: A shallow reinforced concrete beam that connects spread footings and supports walls at grade level
Grade beams tie individual column footings together and support foundation walls or curtain walls at or near grade level, distributing loads and reducing differential settlement.
What is the difference between a simply supported beam and a fixed-end beam?
Answer: A simply supported beam rotates freely at supports; a fixed-end beam is restrained against rotation
Fixed-end beams develop negative moments at supports that partially offset midspan positive moments, making them stiffer and allowing smaller member sizes for the same span.
What is the role of the building code in structural engineering practice?
Answer: To set minimum safety standards that structural designs must meet or exceed
Building codes establish minimum performance requirements for structural safety, but engineers may exceed these minimums based on project-specific requirements or owner preferences.
What is the significance of the moment of inertia (I) for a structural beam?
Answer: It measures the beam's resistance to bending — higher I means less deflection
The moment of inertia quantifies how a cross-section's area is distributed relative to its neutral axis, directly controlling flexural stiffness and deflection under load.
What is the purpose of a bearing plate under a structural steel beam?
Answer: To distribute the concentrated beam reaction over a larger area of the supporting masonry or concrete
Bearing plates spread the high concentrated load from a beam end over enough bearing area to keep compressive stresses in masonry or concrete within allowable limits.
What structural phenomenon occurs when a slender column buckles before reaching its material yield strength?
Answer: Euler buckling (elastic buckling)
Euler buckling is a stability failure where a long, slender column deflects laterally under compressive load at a stress well below the material's yield point.