For the fillet weld cross – section shown in figure the throat thickness is:

For the fillet weld cross – section shown in figure the throat thickness is: Correct Answer BD

Explanation:

Effective throat thickness:

(i) It is the shortest distances from the root of fillet weld to the hypotenuses of the inscribed right angle triangle within the weld.

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So from the given cross-section in the question, effective throat thickness is BD

(ii) In any case, the effective throat thickness should not be less than 3 mm and should not exceed 0.7t or 1.0t under certain situations, where t is the thickness of the thinner member joined.

(iii) Thus , Effective throat thickness = K × Size of fillet weld = KS

where, K = Constant that depends on the angle between the joining (fusion) surfaces and is given as