All-welded moment connection
All-welded moment connection
(OP)
I designed a cantilever beam with a moment connection to a column web using a web plate for shear and bolted flange plates for the moment. However, the contractor just welded around the beam end to the column - no web plate, no flange plates, no bolts! I now need to check this to ensure that the connection is adequate. Can anyone direct me to an all-welded moment connection design or example? I know that I came across an example a few years ago but I cannot remember the reference. Any help or guidance would be appreciated. Thanks!






RE: All-welded moment connection
However, they changed your connection detail and now you have to perform additional work to prove and verify their connection works. Charge them a change order to review it or have them rip it out.
Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com
RE: All-welded moment connection
1) You'll have to do some fancy yield line analysis on the web to assess the strength.
2) Assessing web flexibility, and there for cantilever deflection, will be tough.
This won't really answer your question but might provide some useful ideas: Link
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: All-welded moment connection
Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com
RE: All-welded moment connection
However your statement that they welded all around sounds like a fillet weld, in which you would need to do some analysis. If they didn't RFI and get this change in writing, I am in agreement with TehMightEngineer. Need to back-charge them for the extra work.
RE: All-welded moment connection
That might be true for the weld, but as others have indicated, the weak link is likely the column web.
RE: All-welded moment connection
RE: All-welded moment connection
RE: All-welded moment connection
Buggar, nothing was submitted. I visited the site and noticed that they installed the beam differently from what was on the drawings.
RE: All-welded moment connection
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: All-welded moment connection
KootK, that's what I eventually did....had them install the plates.
Thanks All!