Structural · S-BJ9W9

Typical Continuity Plates

Materials

Steel

Elements

Columns Beams Connections / Plates

Connections

Welded Connection

About this detail

Steel continuity plates are located on each side of a column web at beam flange elevations. The continuity plate thickness matches the beam flange thickness with a three-quarter-inch minimum, using a thicker flange when beams occur on two sides of the column. Complete joint penetration welds connect the continuity plate to the column flanges, with welds held back one-quarter inch typically and one-and-a-half inches maximum near the corners. Where doubler plates occur, complete joint penetration welds join the continuity plate to the doubler plate, leaving backing in place with a five-sixteenth-inch fillet weld underneath unless interference requires removal. Corner clips on the continuity plates are detailed with a one-half-inch minimum radius, and weld tabs are removed to within a quarter inch maximum from the edge with the weld ends ground smooth.

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