The drawing specifies dimensional tolerances and edge preparation requirements for structural steel groove welds. Callout one dictates beveling as required by AWS D1.1 for the selected groove weld procedure. Subsequent dimensions establish limits for member thicknesses, root radii, and clearances based on plate thickness t. Specific tolerances include a minimum radius of three-eighths of an inch with unlimited positive variance and zero negative tolerance. Spacing and dimensional limits are defined proportionally using plate thickness factors.
2 1 3 4 6 5 5 1 BEVEL AS REQUIRED BY AWS D1.1 FOR SELECTED GROOVE WELD PROCEDURE 2 LARGER OF t OR 1/2". (PLUS 1/2 t ,OR MINUS 1/4 t ) 3 MIN. OF 3/4 t , OR 3/4" WHICHEVER IS GREATER. MAX. SHALL BE t (± 1/4") 4 3/8" MIN. RADIUS (PLUS NOT LIMITED, OR MINUS 0) 5 3 t (± 1/2") t . . . . . . 7 bf b b b b b b
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