Structural Engineering PE Exam Flashcards
6 cards from real NCEES 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 Engineering PE Exam flashcards as text
On the NCEES PE Structural exam, which parameter defines the seismic design category (SDC) of a structure?
Answer: Spectral response accelerations and occupancy category
The seismic design category is determined by combining the mapped spectral response accelerations (SDS and SD1) with the risk category (occupancy) of the structure.
In NCEES PE Structural exam problems, what does the 'response modification factor R' represent in seismic design?
Answer: The ratio of elastic to inelastic seismic forces, reflecting ductility and overstrength
The R factor reduces the elastic seismic demand to a design-level force by accounting for the inherent ductility, overstrength, and energy dissipation of the structural system.
For the NCEES PE Structural exam, what is the primary purpose of confining reinforcement (hoops/spirals) in a concrete column?
Answer: To increase ductility and concrete confinement under compression
Transverse confinement reinforcement increases concrete ductility and compressive strength by restraining lateral expansion of the core concrete under axial load.
On the NCEES PE Structural exam, what is a 'diaphragm' in building structural engineering?
Answer: A horizontal structural element that distributes lateral forces to vertical elements
A diaphragm (floor or roof system) acts as a horizontal plate that collects and distributes lateral forces to the building's shear walls, frames, or braces.
In NCEES PE Structural exam problems, which ACI 318 equation governs the nominal shear strength provided by concrete in a beam?
Answer: Vc = 2√f'c × bw × d (simplified)
The simplified ACI 318 equation for concrete shear contribution is Vc = 2√f'c × bw × d (in US customary units), where bw is web width and d is effective depth.
For the NCEES PE Structural exam, what does 'live load reduction' allow engineers to do?
Answer: Reduce design live loads for large tributary areas based on probability
Live load reduction permits lower design live loads on members with large tributary areas, since it is statistically unlikely that the full code live load acts simultaneously over a large area.
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