LAP JOINTS

The single-fillet lap joint (fig. 3-27, view A) is easy to weld, since the filler metal is simply deposited along

Figure 3-28.-Flanged edge Joints.

the seam. The strength of the weld depends on the size of the fillet. Metal up to 1/2 inch in thickness and not subject to heavy loads can be welded using this joint.

When the joint will be subjected to heavy loads, you should use the double-fillet lap joint (fig. 3-27, view B). When welded properly, the strength of this joint is very close to the strength of the base metal.

EDGE JOINTS

The flanged edge joint (fig. 3-28, view A) is suitable for plate 1/4 inch or less in thickness and can only

Figure 3-29.-Welding positions-plate.

sustain light loads. Edge preparation for this joint may be done, as shown in either views B or C.

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