194 Welding Print Reading Intermittent Fillet Welds The continuity of an intermittent weld is broken by recurring unwelded spaces, Figure 15-10. The pitch (center-to-center spacing) of an intermittent weld (for- merly known as a skip weld) is expressed as the dis- tance between centers of increments on one side of the joint. The pitch (in inches or millimeters) is shown to the right of the length dimension. Notice the length of the weld is the first number followed by the pitch. Figure 15-11 shows the welding symbol for staggered intermittent fillet welding. A staggered intermittent weld occurs on both sides of the joint, with weld increments on one side alternated with respect to those on the other side. For a staggered intermittent fillet weld, the side of the reference line where the weld symbol is closest to the leader indi- cates the side of the joint that starts with the weld. The side of the reference line where the weld sym- bol is furthest from the leader indicates the side that starts without the weld (the skip). Often intermittent welds do not end evenly at the end of the joint. There may not be enough room for another intermittent weld. Be sure to ask your super- visor to explain how the space at the end of the inter- mittent weld should be finished. Fillet Welds in Holes and Slots Fillet welds are sometimes used in circular joints or slots. An all-around fillet weld specified for a hole feature is shown in Figure 15-12. Specifying Fillet Weld Contours The weld face contour of a fillet weld may be specified when a certain welded shape is required. The shape (flat, convex, or concave) is indicated by a contour symbol used with the fillet weld symbol. Figure 15-13 shows contour symbols. The extent and location of a fillet weld may be given graphically on a print view by hatching. Hatching is shown in Figure 15-8. Additional arrows pointing to each section of the joint are used when you must make abrupt changes in weld direction. This is illustrated in Figure 15-9. Figure 15-7. A print usually indicates the starting and finishing location of the weld when the length is given in degrees. Weld finish Weld start 90° Figure 15-8. Hatching can graphically illustrate the extent and location of a fillet weld. 2 Min. 4.5 2 Min. 0.3 Figure 15-9. When abrupt changes are made in the weld direction, welding symbol arrows point to each section or joint. Symbol S S = Size of weld Desired weld