According to CSA 47.1, where should stops/starts be placed when completing a test for an S classification?

According to CSA 47.1, where should stops/starts be placed when completing a test for an S classification?

• A. One on the fillet side 4.5 inches in and one on the groove side 1.5 inches in
• B. One on the fillet side 3 inches in and one on the groove side 2 inches in
• C. One on the fillet side 6 inches in and one on the groove side 3 inches in
• D. One on the fillet side 2 inches in and one on the groove side 2 inches in

Answer: (A)

Stops and starts in CSA 47.1 S-class tests must be placed at specific distances from the ends of the weld coupon so the test covers a representative portion of weld metal and isn’t distorted by edge effects. The required arrangement uses a longer offset on the fillet side (4.5 inches) and a shorter offset on the groove side (1.5 inches). This setup ensures there’s enough weld ahead of the start and after the stop on the fillet side to reflect normal welding conditions, while the groove side offset accounts for its different geometry and access. Distances like 3/2, 6/3, or equal distances on both sides either bring the starts/stops too close to the ends or fail to provide the appropriate coverage and balance between sides, which could bias the evaluation.

Stops and starts in CSA 47.1 S-class tests must be placed at specific distances from the ends of the weld coupon so the test covers a representative portion of weld metal and isn’t distorted by edge effects. The required arrangement uses a longer offset on the fillet side (4.5 inches) and a shorter offset on the groove side (1.5 inches). This setup ensures there’s enough weld ahead of the start and after the stop on the fillet side to reflect normal welding conditions, while the groove side offset accounts for its different geometry and access. Distances like 3/2, 6/3, or equal distances on both sides either bring the starts/stops too close to the ends or fail to provide the appropriate coverage and balance between sides, which could bias the evaluation.