What is d Throat of the fillet weld?

The throat of a fillet weld is the shortest distance from the root of the weld joint to the face of the weld, essentially forming a right triangle with the weld's legs. It is a critical dimension that determines the effective strength and load-bearing capacity of the weld. Proper throat thickness is essential for ensuring the weld meets design specifications and can withstand applied stresses. In general, the throat must be at least equal to the leg length of the fillet weld for optimal performance.