In the design of weldments in torsion it is helpful to have a hierarchical perception of the relative efficiency of common patterns. For example, the weld-bead patterns shown in Table 9€“1 can be ranked for desirability. Assume the space available is an a x a square. Use a formal figure of merit that is directly proportional to J and inversely proportional to the volume of weld metal laid down: br>

forn =-= J0.707h J (h2/2)/-= 1.4144 vol