Welding Code Test Structural Steel Welder

American Welding Society D1.1 Structural Welding Code Test (Structural Steel Welder Certification) Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What does the "D1.1" designation in AWS D1.1 refer to?
• Design of welding equipment
• Structural welding code for steel
• Welding electrode type
• Inspection procedures

Rationale: D1.1 is the AWS code specifically for structural steel

welding.

• Which welding process is most commonly used in AWS D1.1 certified

structural steel welding? 1 / 4

• Gas welding
• Shielded Metal Arc Welding (SMAW)
• Laser welding
• Oxy-fuel welding

Rationale: SMAW is widely accepted for field and shop structural

welding under D1.1.

• What is the minimum preheat requirement for carbon steel with a

thickness of 1 inch and carbon equivalent of 0.40%?

A. 100°F

B. 150°F

C. 200°F

D. 250°F

Rationale: AWS D1.1 specifies minimum preheat based on thickness

and carbon equivalent; 150°F is typical for 1" thickness with CE 0.40.

• Which of the following is the primary purpose of a welding procedure

specification (WPS)?

• Employee training
• To provide qualified welding instructions
• Material purchase guidance
• Safety compliance

Rationale: WPS documents provide all required parameters for

producing a sound weld. 2 / 4

• What is the typical backing material used for groove welds in

structural steel?

• Copper
• Aluminum
• Steel backing bar or no backing
• Plastic

Rationale: Steel backing or welding without backing is standard for

structural groove welds.

• Which of the following defects is considered most critical in a

structural weld?

• Surface porosity
• Cracks
• Slight undercut
• Minor slag inclusion

Rationale: Cracks significantly reduce the strength and integrity of

the welded structure.

7. The proper sequence of welding a T-joint in structural steel is:

• Start at the top and weld down
• Weld near the root first, then fill and cap
• Fill first, then root
• Random sequence

Rationale: Welding the root first ensures proper fusion and reduces

distortion. 3 / 4

• Which electrode classification is commonly used for AWS D1.1

structural welding?

A. E6010

B. E7018

C. E308L

D. E11018

Rationale: E7018 is a low-hydrogen electrode suitable for structural

carbon steel.

• Which factor most affects weld distortion in structural steel?
• Electrode brand
• Heat input
• Weld color
• Shielding gas flow

Rationale: Excessive heat input leads to expansion, contraction, and

distortion.

• In AWS D1.1, what is the required visual inspection for a

completed weld?

• Free of cracks, incomplete fusion, and major defects
• Color match with parent metal
• Smooth surface only
• None

Rationale: Visual inspection checks for critical discontinuities that

could compromise structural integrity.

• / 4