Method and apparatus for fillett welding longitudinal members of framed structures

A method and apparatus are provided for fillet welding a plurality of longitudinal members of a framed structure comprising a horizontal plate, a plurality of transverse members joined to said horizontal plate in equidistantly spaced apart relation and in parallel with each other and said longitudinal members intersecting said transverse members and joined to said horizontal plate in equidistantly spaced apart relation and in parallel with each other, in which a small opening is formed through the transverse members at every intersection with the longitudinal members, and a welding apparatus which may pass through these small openings is advanced along the longitudinal member to be welded to the horizontal plate so that the longitudinal member may be welded continuously to the horizontal plate over its whole length from one end to the other only by one traverse of the welding apparatus.