Which statement best defines weld throat thickness for a fillet weld?

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Multiple Choice

Which statement best defines weld throat thickness for a fillet weld?

In a fillet weld, throat thickness is the shortest distance from the weld root to the weld face, measured perpendicular to the weld axis. This dimension represents the effective cross-section that carries load and thus governs the weld’s strength. The leg length is a separate measurement—the distance along each welded leg from the root to the toe. The base metal thickness isn’t used to define the throat, and the distance from the weld toe to the top of the weld describes the weld’s height, not its throat. Therefore, the best definition is the shortest distance from weld root to weld face.

In a fillet weld, throat thickness is the shortest distance from the weld root to the weld face, measured perpendicular to the weld axis. This dimension represents the effective cross-section that carries load and thus governs the weld’s strength. The leg length is a separate measurement—the distance along each welded leg from the root to the toe. The base metal thickness isn’t used to define the throat, and the distance from the weld toe to the top of the weld describes the weld’s height, not its throat. Therefore, the best definition is the shortest distance from weld root to weld face.

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