After a root pass has been applied, any excess buildup or undercut should be removed by _____
a. increasing the amperage of the welder during the hot pass
b. grinding the face of the root pass with the edge of a grinding disk
c. grinding away narrow strips of material with a cutoff wheel
d. carefully heating and cutting away the excess with a torch
b
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Determine all joint displacements, reactions, and bar forces for the truss in Figure P15.6. For all bars,
