AWS Certified Welder Bridge Welding
D1.5 Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
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1. What is the primary code governing bridge welding in the United States?
A. AWS D1.1
B. AWS D1.3
C. AWS D1.5
D. ASME Section IX
Answer: C. AWS D1.5
Rationale: AWS D1.5 is specifically developed for bridge welding
requirements.
2. What type of steel is most commonly used in bridge construction?
A. Stainless steel
B. Carbon steel
C. Aluminum
D. Tool steel
Answer: B. Carbon steel
Rationale: Carbon steel provides strength, durability, and cost-
effectiveness for bridges.
,3. Preheat is primarily used to:
A. Increase weld speed
B. Reduce distortion
C. Prevent cracking
D. Improve color
Answer: C. Prevent cracking
Rationale: Preheating reduces cooling rate and hydrogen-induced
cracking risk.
4. What is the purpose of post-weld inspection?
A. Improve weld speed
B. Detect discontinuities
C. Reduce cost
D. Increase thickness
Answer: B. Detect discontinuities
Rationale: Inspection ensures weld quality and identifies defects.
5. Which welding process is commonly used in bridge fabrication?
A. GTAW
B. SMAW
C. Oxy-fuel
D. Soldering
Answer: B. SMAW
Rationale: Shielded Metal Arc Welding is widely used for structural steel.
6. What electrode classification is commonly used for bridge welding?
A. E6010
B. E7018
C. E308
D. E4043
Answer: B. E7018
Rationale: E7018 provides low hydrogen and high strength suitable for
bridges.
, 7. Low hydrogen electrodes must be:
A. Wet
B. Stored in ovens
C. Painted
D. Frozen
Answer: B. Stored in ovens
Rationale: Proper storage prevents moisture absorption and hydrogen
cracking.
8. What defect is caused by trapped gas?
A. Slag inclusion
B. Porosity
C. Undercut
D. Crack
Answer: B. Porosity
Rationale: Gas pockets create porosity in weld metal.
9. Undercut occurs at:
A. Weld root
B. Weld toe
C. Base metal center
D. Electrode tip
Answer: B. Weld toe
Rationale: Undercut is a groove melted into the base metal at the weld
toe.
10.Which position is overhead?
A. 1G
B. 2G
C. 3G
D. 4G
Answer: D. 4G
Rationale: 4G refers to overhead groove welding.
D1.5 Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. What is the primary code governing bridge welding in the United States?
A. AWS D1.1
B. AWS D1.3
C. AWS D1.5
D. ASME Section IX
Answer: C. AWS D1.5
Rationale: AWS D1.5 is specifically developed for bridge welding
requirements.
2. What type of steel is most commonly used in bridge construction?
A. Stainless steel
B. Carbon steel
C. Aluminum
D. Tool steel
Answer: B. Carbon steel
Rationale: Carbon steel provides strength, durability, and cost-
effectiveness for bridges.
,3. Preheat is primarily used to:
A. Increase weld speed
B. Reduce distortion
C. Prevent cracking
D. Improve color
Answer: C. Prevent cracking
Rationale: Preheating reduces cooling rate and hydrogen-induced
cracking risk.
4. What is the purpose of post-weld inspection?
A. Improve weld speed
B. Detect discontinuities
C. Reduce cost
D. Increase thickness
Answer: B. Detect discontinuities
Rationale: Inspection ensures weld quality and identifies defects.
5. Which welding process is commonly used in bridge fabrication?
A. GTAW
B. SMAW
C. Oxy-fuel
D. Soldering
Answer: B. SMAW
Rationale: Shielded Metal Arc Welding is widely used for structural steel.
6. What electrode classification is commonly used for bridge welding?
A. E6010
B. E7018
C. E308
D. E4043
Answer: B. E7018
Rationale: E7018 provides low hydrogen and high strength suitable for
bridges.
, 7. Low hydrogen electrodes must be:
A. Wet
B. Stored in ovens
C. Painted
D. Frozen
Answer: B. Stored in ovens
Rationale: Proper storage prevents moisture absorption and hydrogen
cracking.
8. What defect is caused by trapped gas?
A. Slag inclusion
B. Porosity
C. Undercut
D. Crack
Answer: B. Porosity
Rationale: Gas pockets create porosity in weld metal.
9. Undercut occurs at:
A. Weld root
B. Weld toe
C. Base metal center
D. Electrode tip
Answer: B. Weld toe
Rationale: Undercut is a groove melted into the base metal at the weld
toe.
10.Which position is overhead?
A. 1G
B. 2G
C. 3G
D. 4G
Answer: D. 4G
Rationale: 4G refers to overhead groove welding.
