Figure 3-26.T ee joints.
The single-bevel tee joint (fig. 3-26, view B) can
withstand more severe loadings than the square tee joint,
because of better distribution of stresses. It is generally
used on plates of 1/2 inch or less in thickness and where
welding can only be done from one side.
The double-bevel tee joint (fig. 3-26, view C) is for
use where heavy loads are applied and the welding can
be done on both sides of the vertical plate.
The single-fillet lap joint (fig. 3-27, view A) is easy
to weld, since the filler metal is simply deposited along
Figure 3-27.Lap joints,
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.
The flanged edge joint (fig. 3-28, view A) is suit-
able for plate 1/4 inch or less in thickness and can only