Welding Symbols - Mystery Symbol - Please Assist!

[Curtis_Canada]

Hi fellow fabricators,

I have a question about a welding symbol I have seen a few times that has been driving me crazy.

I am reviewing a shop drawing for a sub-contracted steel fabricator working with us, and I can't for the life of me find any information on the tail symbol in their drawing, which I have highlighted in the attachment.
It is welding a steel angle to a steel square HSS. The symbol is not covered in the back of the CISC Handbook of Steel Construction, and I have looked all over the internet to no avail.

Can anyone provide information on its meaning?? Additionally, I would be very interested to hear about its origin, or where it is standardized...

Thanks! - Curt

[Econdron]

I don't think it means anything. The tail is only there if a specified process or reference is called out. Even then it's supposed to be the ">" shape. I've never seen that shape use before. Are you able to ask the one who made the drawing?

[TimmyTIG]

I think it's saying to weld down the sides of the angle, too. Searching turned this up:
http://weldingweb.com/showthread.php...wn-weld-symbol

[Curtis_Canada]

Thanks for the assist guys!

@ Econdron:
I would have thought that too, but they use the standard ">" tail in many other places in the drawing set, so it isn't an intentional substitute...

@ Timmy:
Thank you! That thread was very helpful, and further explains the difficulty I had finding information about it in the first place. I have to agree with you with respect to their likely intent.

I also can understand if the idea behind it is to avoid one of the two alternative options:
- creating an additional weld symbol with its leader pointing at the middle of the horizontal leg of the angle, indicating a fillet weld on both sides.
- writing "Typical 3 sides" in the tail of their symbol
However, I still feel the proper way to show their intent is the 2 alternative options I provided. I also don't think avoiding one extra weld symbol is worth inventing a new tail symbol....

In all honesty, proponents of this new symbol's use might find it worth submitting the idea to the CISC (and/or AWS) as a possible implementation in future drawing standards.

[Curtis_Canada]

I wish I could mark TimmyTIG's post as the Solution. Or at least mark the thread as Solved.

[aevald]

Hello Curt, these are my thoughts. First off, how long is the clip that is being anchored to the wall and field welded to the tube? I just noticed that it is 3", sorry. If this clip is shorter in width than the tube is wide the symbol may indicate that the fillet that is connecting the angle clip to the tube is to wrap around the end of the angle a "bit". Likely the length of this wrap around will not be shorter than a 1/4", the thickness of the clip.

I have not seen this noted in any specific weld symbol publications, however this practice would be a sound welding method. I too, will be interested to hear from others who have a more grounded/fact based response. Good luck and best regards, Allan

[Curtis_Canada]

Your thoughts, if I understand you: A symbol to indicate a short 'return' or 'wraparound' at the corners?
Good call. And again a good potential suggestion for the governing standards authorities. I suppose I personally still would have noted "provide a 1" return" in the tail of the symbol, but this new symbol might be a better way to describe it.

[TimmyTIG]

you should post this at the AWS forum. A whole bunch of egghead inspectors hang out there.

[Welder Dave]

If the print needs another welding symbol, it should be on the print. Putting some made up symbol that doesn't show on any of the accepted symbols charts just confuses the whole thing. If was something critical, the engineer or draftsman could get in a lot of trouble. The people fabricating it shouldn't have to guess.

[Curtis_Canada]

@ Welder Dave:
I strongly agree.

@ TimmyTIG
I think I will do so. It might end up in a textbook someday.

[inspect439]

Hi,
The symbol(in yellow)is the symbol using to show you that the angle iron is being slotted in side the wall bracket(no measurement indicated on drawing) with it being welded to 3/16 fillet weld on bottom side. This symbol is not in any book that I ever seen but by experience in the field over 45 years around the world that I can tell you that from experience.



Kim Himel
Inspector/Consulting

[Dualie]

the detailer or engineer is making up weld symbols without clarification elsewhere. i would RFI them to find out WTF.

[Eliz964]

Even though it's been a year now (and a crazy one, at that) this question was relevant to me and after further digging I found a PDF from AISC that is useful. Although the author does note "These symbols are not AWS standards;
they are simply suggestions."

https://www.aisc.org/globalassets/mo...elwise_web.pdf





*Edited to add author note

[snoeproe]

The weld detail symbols are all lacking tails except for the one symbol that I've never seen in any reference material, ever.