Weld Termination on Tension Members

[humanengr]

AWS D1.1 Fig 2.6 requires welds near edges subject to tension to terminate min. weld size away from edge
(sketch attached)
Can anyone shed some light on specifically why this is required?
Since Fig. 2.6 indicates either member in tension I'm thinking it has to do with
stress concentrations in the base metal near the edges, rather than a weld issue.
You comments would be appreciated.

 

[JAE]

Sketch?

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[Stenbrook]

http://weldingdesign.com/processes/finale-fillet-weld-0209

That article is a pretty good explanation.

 

[humanengr]

JAE - Sorry, for some reason the sketch would not attach. Maybe our computer system blocked it.
It is Fig. 2.6 from AWS D1.1