steel column + beam

[Robert222]

I am designing steel tube columns with steel tube beam. It is not a moment frame. Only for supporting vertical loads.
When is better to weld the beam on side of the column and when is it better on top of the column?

 

[slickdeals]

If it is a one story building, then I think it is easier to set the beam on top of the columns. The connection requires lesser prep and installation time.

Welding on the side will need a knife plate connection or a seated connection. Setting on top will only need a cap plate.

 

[delagina]

i have been told also that beam on top of column is easier for construction. in my industry (refinery plant) though, this may not be a good idea as we need to add new levels of platform in the future, etc.. so column extending 2 feet above is better.

 

[BAretired]

Why are you using a steel tube beam?

BA

 

[Robert222]

steel tube sounds easier for nailers attachment on sides of the beam.

Why are all steel moment frames constructed the way beam on side of the column? i think it would transfer the moment even if the beam is set on top of the column over the end plate....

 

[BAretired]

A steel WF would be my choice and I would bolts it to a column cap plate. Stiffeners are required within the beam over the column for stability and this would also permit upward extension of the column.

Alternatively, if there is a good chance of upward extension, you could extend the column slightly above the top of beam and use a single or double angle connection to the beam web. You would still need a cap plate to attach the future column extension.

BA

 

[delagina]

who told you all steel frames are constructed with beam on the side.

while it is common practice specially in my industry, i have some existing here where beam is on top of column moment connected because column extension can be tripping hazard for top platform.

 

[Robert222]

simpson strongtie and hardy frames offer only moment frames with beam welded on side of the columns.....

 

[delagina]

i'm in industrial industry.