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

Bearing failure of the bolt hole

Answer

Weld throat shear failure

Answer

Prying action failure in a bolted T-stub

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

0.375 in (equal to leg size)

Answer

0.188 in (0.5 × 3/8)

Answer

0.530 in (2 × 0.707 × 3/8)

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

Rn = 0.450 × 120 ksi × 0.601 = 32.5 kips

Answer

Rn = 0.75 × 92 ksi × 0.601 = 41.5 kips

Answer

Rn = 1.0 × 92 ksi × 0.601 = 55.3 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

PR (Partially Restrained) connection

Answer

Simple shear tab connection

Answer

Single-plate shear connection

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

Bolt diameter and grade only

Answer

Weld size and electrode classification

Answer

Bearing strength of the connected material

Question 6

What is the minimum edge distance for a 3/4-in bolt in a standard hole per AISC Table J3.4?

Accepted Answer

1 in

Answer

1.25 in

Answer

0.875 in

Answer

1.5 in

Question 7

A welded connection uses E70XX electrodes. The nominal tensile strength of the weld metal Fexx is:

Accepted Answer

70 ksi

Answer

60 ksi

Answer

90 ksi

Answer

50 ksi