Evaluating existing structure connection.
Evaluating existing structure connection.
(OP)
Hi.
I'm evaluating an existing mezzanine structure and I'm concerned with some connections whose plate shear connectors I think are too long (drawing attached).
The 2 5/8" length seems to me to long and that considerable torsion deformation can take place.
I can't find references that addresses this, except for AISC provision on Maximum Spacing and Edge Distance for bolted or riveted connections, but I don't think this solves it.
Any opinion?
A36 steel for the plate and beams.
Beams are 12" X 4" X 1/4"
Connector is 1/4"
Thanks for your answers.
RGuerra.
I'm evaluating an existing mezzanine structure and I'm concerned with some connections whose plate shear connectors I think are too long (drawing attached).
The 2 5/8" length seems to me to long and that considerable torsion deformation can take place.
I can't find references that addresses this, except for AISC provision on Maximum Spacing and Edge Distance for bolted or riveted connections, but I don't think this solves it.
Any opinion?
A36 steel for the plate and beams.
Beams are 12" X 4" X 1/4"
Connector is 1/4"
Thanks for your answers.
RGuerra.






RE: Evaluating existing structure connection.
RE: Evaluating existing structure connection.
Yes, I'm addressing a handfull of issues in a poorly done erection job, being that 3/4" edge distance not the shortest one nor the dirtiest one. There are at least seventeen connections in wich the distance is 7/16" or so, some torch made bolt holes, bad welds and more.
Photos attached.
RGuerra.
RE: Evaluating existing structure connection.
BA
RE: Evaluating existing structure connection.
And to second BA, you seriously need a new fabricator. Those cope details (cutting the whole beam short) are lazy.
RE: Evaluating existing structure connection.
Now they want to to install a small production line there and want to know the (in)capabilities of the structure.
Bad news they are getting Monday.
Yes, the beams are W12X16 and W8X10.
Colums are 3" X 3" X 1/8", 10 ft to the bottom of the beam.
Bolts are SAE Grade 5, and I don't think they are torqued to specification as you can see the loose one in the far connection in the third photo.
Pictures.
https://plus.google.com/photos/1060793372803278958...
RGuerra.