Certification Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary purpose of a layout in structural steel work?
a) To increase the speed of welding
b) To ensure accurate placement and alignment of steel
members
c) To reduce corrosion
d) To minimize material cost
Layout ensures steel members are positioned correctly according
to design specifications.
2. When performing a fillet weld, the leg length is measured from:
a) The weld’s root
b) The weld’s root to the toe
c) The center of the weld
d) The end of the weld
The leg length determines the size of the fillet weld and affects its
strength.
3. Which type of steel is commonly used in high-rise construction?
a) Aluminum alloy
b) Structural carbon steel
c) Stainless steel
d) Copper
, Structural carbon steel has high strength, ductility, and cost-
effectiveness for large structures.
4. What is the purpose of using a plumb bob in ironworking?
a) To measure angles
b) To mark weld locations
c) To ensure vertical alignment
d) To measure length
A plumb bob allows ironworkers to check if a column or beam is
perfectly vertical.
5. Which personal protective equipment is essential when working at
heights?
a) Gloves
b) Safety glasses
c) Fall arrest harness
d) Ear protection
Fall arrest harnesses prevent serious injury or death if a worker
falls from height.
6. When welding galvanized steel, what safety precaution is
necessary?
a) Use extra voltage
b) Ensure proper ventilation to avoid toxic fumes
c) Increase weld size
d) Use a hammer post-weld
Galvanized coatings release harmful zinc oxide fumes when
heated.
7. The term “camber” in steel erection refers to:
a) The width of a beam
, b) The intentional upward curve in a beam
c) A type of weld
d) A method of lifting steel
Camber compensates for deflection caused by loads to maintain
level surfaces.
8. Which tool is used to check the alignment of bolted connections?
a) Plumb bob
b) Tape measure
c) Level and square
d) Grinder
Levels and squares ensure that bolted connections are aligned for
structural integrity.
9. In structural steel fabrication, what is the purpose of a fishplate?
a) To cover welds
b) To connect two beams or plates
c) To serve as a load-bearing anchor
d) To measure deflection
Fishplates (or splice plates) are bolted or welded to join steel
members end-to-end.
10. What is the main hazard when cutting steel with an oxy-
acetylene torch?
a) Slipping
b) Fire and burns
c) Corrosion
d) Noise
Molten metal and sparks can ignite combustible materials or
cause burns.