NM GS24 STRUCTURAL STEEL ERECTION
PRACTICE EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. What is the minimum bolt tension for ASTM A325 bolts in slip-
critical connections?
A. 25 ksi
B. 70 percent of the bolt’s tensile strength
C. 50 percent of yield strength
D. 90 percent of proof load
Slip-critical joints require approximately 70% of the bolt’s tensile
strength to maintain adequate clamping force.
2. Which document governs the field erection tolerances for
structural steel?
A. ACI 318
B. AISC Code of Standard Practice
C. AWS D1.1
D. OSHA 1926 Subpart R
The AISC Code of Standard Practice specifies fabrication and
erection tolerances.
,3. What type of steel connection uses plates welded between two
beams for rigidity?
A. Shear connection
B. Moment connection
C. Simple connection
D. Slip joint
Moment connections resist rotation and provide structural
continuity.
4. Which weld symbol indicates a field weld?
A. Circle at junction
B. Flag at tail of reference line
C. Dashed line beneath arrow
D. Triangular arrowhead
A flag at the tail indicates a field weld per AWS A2.4 symbol
conventions.
5. What OSHA standard covers fall protection during steel erection?
A. 1926 Subpart M
B. 1926 Subpart R
C. 1910 Subpart D
D. 1926 Subpart Q
Subpart R addresses safety during steel erection activities.
6. What is the minimum thickness of base plates requiring leveling
nuts under AISC?
A. 3/4 in.
B. 1/2 in.
C. 1 in.
, D. 1-1/2 in.
Leveling nuts are generally used under base plates ≥ 1 inch thick.
7. When are erection drawings required?
A. For all residential work
B. For every structural steel project
C. Only for welded frames
D. Only for public projects
Erection drawings show placement and sequencing; required on
all steel projects.
8. What is the standard bolt hole diameter for a 3/4-inch bolt?
A. 13/16 in.
B. 15/16 in.
C. 13/16 in. (1/16 in. oversize)
D. 7/8 in.
Bolt holes are typically 1/16 in. larger than bolt diameter.
9. Which type of crane is most used for steel erection?
A. Tower crane
B. Gantry crane
C. Crawler crane
D. Bridge crane
Crawler cranes provide stability and mobility on job sites.
10. What must be installed before removing temporary guying
of columns?
A. Roof deck
B. All bracing and permanent connections
C. Exterior cladding
PRACTICE EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. What is the minimum bolt tension for ASTM A325 bolts in slip-
critical connections?
A. 25 ksi
B. 70 percent of the bolt’s tensile strength
C. 50 percent of yield strength
D. 90 percent of proof load
Slip-critical joints require approximately 70% of the bolt’s tensile
strength to maintain adequate clamping force.
2. Which document governs the field erection tolerances for
structural steel?
A. ACI 318
B. AISC Code of Standard Practice
C. AWS D1.1
D. OSHA 1926 Subpart R
The AISC Code of Standard Practice specifies fabrication and
erection tolerances.
,3. What type of steel connection uses plates welded between two
beams for rigidity?
A. Shear connection
B. Moment connection
C. Simple connection
D. Slip joint
Moment connections resist rotation and provide structural
continuity.
4. Which weld symbol indicates a field weld?
A. Circle at junction
B. Flag at tail of reference line
C. Dashed line beneath arrow
D. Triangular arrowhead
A flag at the tail indicates a field weld per AWS A2.4 symbol
conventions.
5. What OSHA standard covers fall protection during steel erection?
A. 1926 Subpart M
B. 1926 Subpart R
C. 1910 Subpart D
D. 1926 Subpart Q
Subpart R addresses safety during steel erection activities.
6. What is the minimum thickness of base plates requiring leveling
nuts under AISC?
A. 3/4 in.
B. 1/2 in.
C. 1 in.
, D. 1-1/2 in.
Leveling nuts are generally used under base plates ≥ 1 inch thick.
7. When are erection drawings required?
A. For all residential work
B. For every structural steel project
C. Only for welded frames
D. Only for public projects
Erection drawings show placement and sequencing; required on
all steel projects.
8. What is the standard bolt hole diameter for a 3/4-inch bolt?
A. 13/16 in.
B. 15/16 in.
C. 13/16 in. (1/16 in. oversize)
D. 7/8 in.
Bolt holes are typically 1/16 in. larger than bolt diameter.
9. Which type of crane is most used for steel erection?
A. Tower crane
B. Gantry crane
C. Crawler crane
D. Bridge crane
Crawler cranes provide stability and mobility on job sites.
10. What must be installed before removing temporary guying
of columns?
A. Roof deck
B. All bracing and permanent connections
C. Exterior cladding
