Civil Engineering PE Steel Structure Design Methods 4

Question 1

In a steel connection, what is 'block shear failure'?

Accepted Answer

Combined shear rupture on one plane and tension rupture on a perpendicular plane

Answer

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.

Question 2

A fillet weld with a leg size of 3/8 in has an effective throat of approximately:

Accepted Answer

0.265 in (0.707 × 3/8)

Answer

The effective throat of a fillet weld is 0.707 times the leg size: 0.707 × 0.375 = 0.265 in.

Question 3

The nominal shear strength of an ASTM A325 bolt in single shear (threads excluded from shear plane) with Ab = 0.601 in² is:

Accepted Answer

Rn = 0.563 × 120 ksi × 0.601 = 40.6 kips

Answer

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.

Question 4

Which connection type develops the full moment capacity of the beam framing into a column?

Accepted Answer

FR (Fully Restrained) moment connection

Answer

FR connections are classified as rigid and are designed to transfer the full beam moment to the column with negligible rotation.

Question 5

In designing a high-strength bolted slip-critical connection, the design slip resistance per bolt depends on:

Accepted Answer

Class of faying surface, number of slip planes, and minimum bolt pretension

Answer

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.

Civil Engineering PE Practice Test

Civil Engineering PE Practice Test

Civil Engineering PE Steel Structure Design Methods 4