AWS CERTIFIED WELDER BRIDGE WELDING (D1.5) QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES Q&A | INSTANT DOWNLOAD PDF
Section 1: Fundamentals of Bridge Welding & Code Organization (Q1–Q40)
Q1. 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
Explanation: AWS D1.5 is specifically developed for bridge welding requirements. It is
issued jointly by AWS and AASHTO and governs welded highway and railway bridges.
Q2. AWS D1.5 is published by which organization?
A) ASME
B) API
C) AWS
D) ISO
Answer: C – AWS
,Explanation: The American Welding Society (AWS) publishes AWS D1.5, the Bridge
Welding Code.
Q3. AWS D1.5 applies primarily to the welding of which structures?
A) Buildings
B) Pressure vessels
C) Pipelines
D) Bridges
Answer: D – Bridges
Explanation: AWS D1.5 is the Bridge Welding Code specifically governing welded highway
and railway bridges.
Q4. What is the minimum base metal thickness for which AWS D1.5 applies?
A) 1/16 inch
B) 1/8 inch
C) 3 mm (approx. 1/8 inch) and thicker
D) 1 inch and thicker
Answer: C – 3 mm (approx. 1/8 inch) and thicker
Explanation: AWS D1.5 applies to the welding of base metals 3 mm and thicker, which is
approximately 1/8 inch.
,Q5. Which base metal specification is primarily required for bridge steel under AWS
D1.5?
A) ASTM A36
B) ASTM A572 Grade 50
C) ASTM A709 / AASHTO M 270
D) ASTM A992
Answer: C – ASTM A709 / AASHTO M 270
Explanation: AWS D1.5 requires the base material to be AASHTO M 270 / ASTM A709,
which is the standard specification for structural steel for bridges.
Q6. 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
Explanation: Carbon steel provides strength, durability, and cost-effectiveness for bridges.
Q7. Which base material is most commonly covered under AWS D1.5?
, A) Aluminum alloys
B) Carbon and low-alloy steels
C) Stainless steels
D) Cast iron
Answer: B – Carbon and low-alloy steels
Explanation: AWS D1.5 primarily covers carbon and low-alloy structural steels used in
bridges.
Q8. What is the primary purpose of a welding procedure specification (WPS)?
A) To define visual inspection standards
B) To describe the welding process, parameters, and materials
C) To certify welders
D) To specify paint requirements
Answer: B – To describe the welding process, parameters, and materials
Explanation: A WPS ensures consistent, high-quality welds by providing specific instructions
for welding.
Q9. What does PQR stand for?
A) Procedure Quality Record
B) Performance Qualification Record
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES Q&A | INSTANT DOWNLOAD PDF
Section 1: Fundamentals of Bridge Welding & Code Organization (Q1–Q40)
Q1. 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
Explanation: AWS D1.5 is specifically developed for bridge welding requirements. It is
issued jointly by AWS and AASHTO and governs welded highway and railway bridges.
Q2. AWS D1.5 is published by which organization?
A) ASME
B) API
C) AWS
D) ISO
Answer: C – AWS
,Explanation: The American Welding Society (AWS) publishes AWS D1.5, the Bridge
Welding Code.
Q3. AWS D1.5 applies primarily to the welding of which structures?
A) Buildings
B) Pressure vessels
C) Pipelines
D) Bridges
Answer: D – Bridges
Explanation: AWS D1.5 is the Bridge Welding Code specifically governing welded highway
and railway bridges.
Q4. What is the minimum base metal thickness for which AWS D1.5 applies?
A) 1/16 inch
B) 1/8 inch
C) 3 mm (approx. 1/8 inch) and thicker
D) 1 inch and thicker
Answer: C – 3 mm (approx. 1/8 inch) and thicker
Explanation: AWS D1.5 applies to the welding of base metals 3 mm and thicker, which is
approximately 1/8 inch.
,Q5. Which base metal specification is primarily required for bridge steel under AWS
D1.5?
A) ASTM A36
B) ASTM A572 Grade 50
C) ASTM A709 / AASHTO M 270
D) ASTM A992
Answer: C – ASTM A709 / AASHTO M 270
Explanation: AWS D1.5 requires the base material to be AASHTO M 270 / ASTM A709,
which is the standard specification for structural steel for bridges.
Q6. 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
Explanation: Carbon steel provides strength, durability, and cost-effectiveness for bridges.
Q7. Which base material is most commonly covered under AWS D1.5?
, A) Aluminum alloys
B) Carbon and low-alloy steels
C) Stainless steels
D) Cast iron
Answer: B – Carbon and low-alloy steels
Explanation: AWS D1.5 primarily covers carbon and low-alloy structural steels used in
bridges.
Q8. What is the primary purpose of a welding procedure specification (WPS)?
A) To define visual inspection standards
B) To describe the welding process, parameters, and materials
C) To certify welders
D) To specify paint requirements
Answer: B – To describe the welding process, parameters, and materials
Explanation: A WPS ensures consistent, high-quality welds by providing specific instructions
for welding.
Q9. What does PQR stand for?
A) Procedure Quality Record
B) Performance Qualification Record
