Why would a piece of round stock be welded to the inside corner of ...
Why would a piece of round stock be welded to the inside corner of ...
(OP)
Why would a piece of round stock be welded to the inside corner of angle Iron?
I have been observing a truss framed roof from 1921. The angle irons on the upper parts of the trusses have a round stock of a diameter approximately 1/3 the flange width.
What could the reason be for the round stock?
I have been observing a truss framed roof from 1921. The angle irons on the upper parts of the trusses have a round stock of a diameter approximately 1/3 the flange width.
What could the reason be for the round stock?






RE: Why would a piece of round stock be welded to the inside corner of ...
RE: Why would a piece of round stock be welded to the inside corner of ...
Look for torch nicks -- this bar may have been put there to remediate a flaw in the top chord.
RE: Why would a piece of round stock be welded to the inside corner of ...
RE: Why would a piece of round stock be welded to the inside corner of ...
There wasn't much welding being done in 1921, and if the rest of the structure is riveted, I would suspect it was added after the fact.
RE: Why would a piece of round stock be welded to the inside corner of ...
Mike McCann
MMC Engineering
RE: Why would a piece of round stock be welded to the inside corner of ...
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RE: Why would a piece of round stock be welded to the inside corner of ...
Is the round stock and angle still corrosion free and "safe", or deteriorated and falling apart?
What sizes of each?
How much weld is in place?
RE: Why would a piece of round stock be welded to the inside corner of ...
angle iron, round stock and welds appear to be in good condition.
angle iron is 4"x6"x3/8"
round stock is about 1" dia
RE: Why would a piece of round stock be welded to the inside corner of ...
RE: Why would a piece of round stock be welded to the inside corner of ...
The bars add ultimate tensile strength in direct proportion to the area added, provided that the bar force is adequately developed at the ends, and also provided that the bar and angles have the same yield strength. If added to a compression member, the strength would also be increased, but probably not to the same extent as for a tension member because of the tendency of the member to buckle.
RE: Why would a piece of round stock be welded to the inside corner of ...
In looking aat the picture, the bar is not continuous. It is not related to increasing the section.
There was a preveous mention of being a possible repair - could be a backing bar for that?
Mike McCann
MMC Engineering
RE: Why would a piece of round stock be welded to the inside corner of ...
This was added later for reinforcement. Many reasons to reinforce....added load, change of classification, code mandate, etc.
RE: Why would a piece of round stock be welded to the inside corner of ...
RE: Why would a piece of round stock be welded to the inside corner of ...
The difference in yield would have limited effect on the ultimate strength... barring second order effects, after the first section yielded, the higher Fy would continue taking load until it, too, yielded. A slight 'hiccup' in the load deflection diagram.
Dik
RE: Why would a piece of round stock be welded to the inside corner of ...
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Why would a piece of round stock be welded to the inside corner of ...
Mike McCann
MMC Engineering