Steel Structure Design Methods Flashcards
7 cards from real Civil Engineering PE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Steel Structure Design Methods flashcards as text
In a steel connection, what is 'block shear failure'?
Answer: Combined shear rupture on one plane and tension rupture on a perpendicular plane
Block shear is a limit state where a block of material tears out by shear along one plane and tension along a perpendicular plane simultaneously.
A fillet weld with a leg size of 3/8 in has an effective throat of approximately:
Answer: 0.265 in (0.707 × 3/8)
The effective throat of a fillet weld is 0.707 times the leg size: 0.707 × 0.375 = 0.265 in.
The nominal shear strength of an ASTM A325 bolt in single shear (threads excluded from shear plane) with Ab = 0.601 in² is:
Answer: Rn = 0.563 × 120 ksi × 0.601 = 40.6 kips
AISC Table J3.2 gives Fnv = 0.563Fub = 0.563 × 120 ksi = 67.6 ksi (threads excluded); Rn = 67.6 × 0.601 ≈ 40.6 kips.
Which connection type develops the full moment capacity of the beam framing into a column?
Answer: FR (Fully Restrained) moment connection
FR connections are classified as rigid and are designed to transfer the full beam moment to the column with negligible rotation.
In designing a high-strength bolted slip-critical connection, the design slip resistance per bolt depends on:
Answer: Class of faying surface, number of slip planes, and minimum bolt pretension
Slip resistance = μ × Du × hf × Tb × ns, where μ is the mean slip coefficient for the surface class, Tb is pretension, and ns is the number of slip planes.
What is the minimum edge distance for a 3/4-in bolt in a standard hole per AISC Table J3.4?
Answer: 1 in
AISC Table J3.4 specifies a minimum edge distance of 1 in for a 3/4-in bolt in a standard hole at a sheared edge.
A welded connection uses E70XX electrodes. The nominal tensile strength of the weld metal Fexx is:
Answer: 70 ksi
The designation E70XX means the electrode has a minimum tensile strength of 70 ksi.