ICC Welding Certification Practice Test

Question: 1 / 400

What is the maximum size discontinuity allowed in a 3/4" thick complete penetration groove weld?

3/4 inch

1 inch

1-1/16 inches

The maximum size discontinuity allowed in a 3/4" thick complete penetration groove weld is determined by the standards applicable to welding practices, such as those outlined by the American Welding Society (AWS) or the American Society of Mechanical Engineers (ASME). In the context of this question, a discontinuity refers to any interruption in the physical structure of the weld, such as a flaw, inclusion, or void, which could compromise its integrity.

For a complete penetration groove weld, the allowable discontinuity size is proportionate to the thickness of the material being welded. In this case, a maximum size of 1-1/16 inches is permissible for a 3/4" thick weld. This allowance is based on the requirement for ensuring sufficient weld quality and performance under operational conditions.

The chosen size reflects engineering practices that aim to balance weld integrity with practical weldability considerations. Larger discontinuities can lead to stress concentrations or failure points within the weld, which is why strict limits are established to maintain the structural soundness of the joint. Understanding this limit is crucial for welders to ensure they adhere to the guidelines that promote safety and reliability in welded structures.

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1-1/4 inches

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