IRONWORKER NCCER EXAM / ACTUAL IRONWORKER NCCER
EXAM TESTBANK 2026/2027 COMPREHENSIVE PRACTICE
QUESTIONS
1. A structural ironworker is tasked with erecting a 30-meter span
steel truss bridge using a mobile crane. The truss sections are
prefabricated and each weighs 12 metric tons. The crane has a
maximum capacity of 25 metric tons at a 10-meter radius. Which of
the following considerations is MOST critical for the stability of the
crane during the lift?
A) Use of tag lines to prevent load rotation
B) Calculating the load moment including the weight of the rigging and
hook block
C) Ensuring the crane is positioned on compacted gravel
D) Selecting a synthetic sling with a 5:1 safety factor
Correct Answer: B) Calculating the load moment including the weight
of the rigging and hook block
Rationale: The load moment (load weight × radius) is critical for crane
stability; exceeding the crane's capacity can cause tipping. Option A is
important for load control but not stability; C is a ground condition but
not primary; D is sling safety but not crane stability.
,2. During a pre-shift inspection, an ironworker notices that a 1-inch
diameter wire rope sling has several broken wires in one lay.
According to OSHA and ASME B30.9 standards, what is the minimum
number of broken wires in one lay that would require the sling to be
removed from service?
A) 3 broken wires
B) 6 broken wires
C) 10 broken wires
D) 12 broken wires
Correct Answer: B) 6 broken wires
Rationale: ASME B30.9 states that for a 6x19 or 6x37 classification wire
rope, removal is required when there are 6 or more broken wires in one
rope lay. Option A is below threshold; C and D exceed typical limits but
the standard is 6 for this construction.
3. What is the primary purpose of structural steel in building
construction?
A) To provide decorative elements
B) To form the load-bearing skeleton that supports the building's weight
and resists forces
C) To act as insulation
D) To provide waterproofing
Correct Answer: B) To form the load-bearing skeleton that supports
the building's weight and resists forces
,Rationale: Structural steel forms the primary load-bearing framework
(skeleton) of a building, supporting dead loads (the building's own
weight), live loads (occupants, furniture, equipment), and resisting
lateral forces from wind and seismic activity. Steel's high strength-to-
weight ratio, ductility, and ability to be fabricated into long spans make
it ideal for commercial, industrial, and high-rise construction.
4. What is the most commonly used structural steel grade in modern
building construction?
A) ASTM A36
B) ASTM A992
C) ASTM A572
D) ASTM A514
Correct Answer: B) ASTM A992
Rationale: ASTM A992 is the most commonly used structural steel grade
for W-shapes (wide-flange beams and columns) in modern building
construction. It has a minimum yield strength of 50 ksi and improved
weldability compared to older grades. A36 (36 ksi yield) was formerly
the standard but has been largely replaced by A992 for structural
shapes.
5. What does the designation 'W14×30' mean for a structural steel
beam?
A) A beam that is 14 inches wide and 30 inches deep
B) A wide-flange beam approximately 14 inches deep weighing 30
, pounds per linear foot
C) A beam that can span 14 feet with 30 pounds per square foot loading
D) A beam with 14 bolt holes and 30 ksi strength
Correct Answer: B) A wide-flange beam approximately 14 inches deep
weighing 30 pounds per linear foot
Rationale: In the designation W14×30, the 'W' stands for wide-flange
shape, '14' is the approximate depth in inches, and '30' is the weight in
pounds per linear foot. This standard AISC designation system helps
ironworkers and engineers quickly identify member sizes.
6. What is the primary purpose of wearing a hard hat on a job site?
A) To keep the head warm in cold weather
B) To protect against falling objects and electrical shock
C) To serve as a mounting point for welding shields
D) To identify the worker's trade
Correct Answer: B) To protect against falling objects and electrical
shock
Rationale: Hard hats are primary personal protective equipment (PPE)
designed to protect the head from impact from falling or flying objects
and from electrical shock. Option A is not a primary purpose; C is
incorrect; D may be secondary but is not the primary purpose.
7. What is the minimum required breaking strength of a nylon sling
compared to its working load limit?
EXAM TESTBANK 2026/2027 COMPREHENSIVE PRACTICE
QUESTIONS
1. A structural ironworker is tasked with erecting a 30-meter span
steel truss bridge using a mobile crane. The truss sections are
prefabricated and each weighs 12 metric tons. The crane has a
maximum capacity of 25 metric tons at a 10-meter radius. Which of
the following considerations is MOST critical for the stability of the
crane during the lift?
A) Use of tag lines to prevent load rotation
B) Calculating the load moment including the weight of the rigging and
hook block
C) Ensuring the crane is positioned on compacted gravel
D) Selecting a synthetic sling with a 5:1 safety factor
Correct Answer: B) Calculating the load moment including the weight
of the rigging and hook block
Rationale: The load moment (load weight × radius) is critical for crane
stability; exceeding the crane's capacity can cause tipping. Option A is
important for load control but not stability; C is a ground condition but
not primary; D is sling safety but not crane stability.
,2. During a pre-shift inspection, an ironworker notices that a 1-inch
diameter wire rope sling has several broken wires in one lay.
According to OSHA and ASME B30.9 standards, what is the minimum
number of broken wires in one lay that would require the sling to be
removed from service?
A) 3 broken wires
B) 6 broken wires
C) 10 broken wires
D) 12 broken wires
Correct Answer: B) 6 broken wires
Rationale: ASME B30.9 states that for a 6x19 or 6x37 classification wire
rope, removal is required when there are 6 or more broken wires in one
rope lay. Option A is below threshold; C and D exceed typical limits but
the standard is 6 for this construction.
3. What is the primary purpose of structural steel in building
construction?
A) To provide decorative elements
B) To form the load-bearing skeleton that supports the building's weight
and resists forces
C) To act as insulation
D) To provide waterproofing
Correct Answer: B) To form the load-bearing skeleton that supports
the building's weight and resists forces
,Rationale: Structural steel forms the primary load-bearing framework
(skeleton) of a building, supporting dead loads (the building's own
weight), live loads (occupants, furniture, equipment), and resisting
lateral forces from wind and seismic activity. Steel's high strength-to-
weight ratio, ductility, and ability to be fabricated into long spans make
it ideal for commercial, industrial, and high-rise construction.
4. What is the most commonly used structural steel grade in modern
building construction?
A) ASTM A36
B) ASTM A992
C) ASTM A572
D) ASTM A514
Correct Answer: B) ASTM A992
Rationale: ASTM A992 is the most commonly used structural steel grade
for W-shapes (wide-flange beams and columns) in modern building
construction. It has a minimum yield strength of 50 ksi and improved
weldability compared to older grades. A36 (36 ksi yield) was formerly
the standard but has been largely replaced by A992 for structural
shapes.
5. What does the designation 'W14×30' mean for a structural steel
beam?
A) A beam that is 14 inches wide and 30 inches deep
B) A wide-flange beam approximately 14 inches deep weighing 30
, pounds per linear foot
C) A beam that can span 14 feet with 30 pounds per square foot loading
D) A beam with 14 bolt holes and 30 ksi strength
Correct Answer: B) A wide-flange beam approximately 14 inches deep
weighing 30 pounds per linear foot
Rationale: In the designation W14×30, the 'W' stands for wide-flange
shape, '14' is the approximate depth in inches, and '30' is the weight in
pounds per linear foot. This standard AISC designation system helps
ironworkers and engineers quickly identify member sizes.
6. What is the primary purpose of wearing a hard hat on a job site?
A) To keep the head warm in cold weather
B) To protect against falling objects and electrical shock
C) To serve as a mounting point for welding shields
D) To identify the worker's trade
Correct Answer: B) To protect against falling objects and electrical
shock
Rationale: Hard hats are primary personal protective equipment (PPE)
designed to protect the head from impact from falling or flying objects
and from electrical shock. Option A is not a primary purpose; C is
incorrect; D may be secondary but is not the primary purpose.
7. What is the minimum required breaking strength of a nylon sling
compared to its working load limit?
