Fillet Weld Diagram. The theoretical throat is calculated by multiplying w times the cosine of 45 which is 0707. If the joint is subjected to transverse shear loads the bending stresses in the joint can lead to premature failure particularly if the joint is fillet welded on one side only.
When welding a fillet the leg of the weld should be equal to the thickness of the parts welded. In the above diagram w is the fillet weld leg size. A 30 mm 0625 2 3 0625 04182 for interest principal stresses are 129 mpa and 337 mpa.
The fillet welds are each no less than 3 inches long i believe the welds are 316 so throat would be 0133.
Another gauge simple in design is shown in fig. Structural welding is a process by which the parts that are to be connected are heated and fused with supplementary molten metal at the joint. A throat thickness z leg length s deep penetration throat thickness fig. This symbol is characterized by a right triangle which is the lateral shape of a real fillet weld.