T

bfs (stub flange width) >1

bfc (chord flange width)

Chord

FIGURE 33.9 Welding details for end of stub to bottom chord of stub girder.

bfc (chord flange width)

Chord

FIGURE 33.9 Welding details for end of stub to bottom chord of stub girder.

In the above expressions, a = 16 in. = fillet weld size, jw = 0.75, and Fw = 0.6FEXX = 0.6 x 70 = 42 ksi for E70XX electrodes. The total U-weld lengths at each stub end are therefore

Exterior stub: LUes = 19.1 in. Interior stub: LUis = 5.6 in.

With a flange width for the W16 x 26 of 5.50 in., the above lengths can be simplified as

LUes = 5.50 + 7.0 + 7.0 where Les is chosen as 7.0 in. For the interior stub

where Lis is chosen as 2.0 in.

The details chosen are a matter of judgment. In the example, the interior stub for all practical purposes requires no weld other than the one across the flange, although at least a minimum weld return of 1 in. should be used.

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