Steel moment connection - which one?
Steel moment connection - which one?
(OP)
Hey guys, i need a little help with this.
Im wondering which moment connection should I choose and why.
All other connections in a model are considered as pinned.
Im also open for other type of connection if you think it would be better.
Steel construction is supported / braced in X directions by existing building.
In Y direction it is braced by steel bars (roof plane).


Im wondering which moment connection should I choose and why.
All other connections in a model are considered as pinned.
Im also open for other type of connection if you think it would be better.
Steel construction is supported / braced in X directions by existing building.
In Y direction it is braced by steel bars (roof plane).








RE: Steel moment connection - which one?
I would suggest the second option.
Being dimensions of plates and bolts equal, the second option has the friction between the plates and the resistance to shear of the bolts resisting the weight and the wind uplift loads.
"God will not look you over for medals, degrees or diplomas, but for scars." - Elbert Hubbard
RE: Steel moment connection - which one?
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RE: Steel moment connection - which one?
RE: Steel moment connection - which one?
RE: Steel moment connection - which one?
RE: Steel moment connection - which one?
RE: Steel moment connection - which one?
Can you consider running the roof 'purlins' over the top of the rafters and cantilever a tad to reduce the mid span moment? Connection is generally cheaper and easier. Can you use CFS channels in lieu of rolled sections?
Dik
RE: Steel moment connection - which one?
One more relevant note: if you have any difficulty getting the beam-col detailing to work as a moment connection, or are unsure about that in any manner, you could switch gears to a cantilever column system. Because the 'R' value is smaller, your lateral load will be higher (for seismic), and your base connection and footing would need to resist the effects of rotation about the base. But if your structure can sustain this, then it might be the easiest way to go.
RE: Steel moment connection - which one?
RE: Steel moment connection - which one?
But it makes me think what happens to a steel construction when existing building deflects/moves(earthquake)for lets say 2 cm (in X direction). In that case steel columns act like cantilever (if supports are fixed of course, but what if they are not designed that way)?
So I think I can make fixed supports at the bottom of columns and pinned at the top (instead of moment connection). What do you think about that?