During an inspection of a newly installed steel beam in a commercial building construction project in Ontario, the inspector finds that a critical butt weld was made without beveling, contrary to the design drawings and project specifications referencing CSA W59. What is the most likely consequence of this finding under CSA W59?

Question: During an inspection of a newly installed steel beam in a commercial building construction project in Ontario, the inspector finds that a critical butt weld was made without beveling, contrary to the design drawings and project specifications referencing CSA W59. What is the most likely consequence of this finding under CSA W59?

Answer options:

• The weld will be immediately accepted, as long as visual inspection passes.
• The welder will receive a warning for minor non-compliance. ✅ The weld will be rejected and require remedial action, possibly removal and re-welding.
• Extra non-destructive examination (NDE) methods will be used to approve the weld.

Correct answer: The weld will be rejected and require remedial action, possibly removal and re-welding.

Explanation: CSA W59 provides stringent requirements for joint preparation, including specific beveling for butt welds to ensure full penetration and strength. Welding a critical butt joint without proper beveling as specified is a significant deviation from engineered design and code requirements. This will almost certainly lead to the weld being rejected, as it compromises the structural integrity, and will necessitate remedial action, which often involves removing the non-compliant weld and re-welding it correctly.