Does anyone know what these portal frames are called in the US? 4

[RobFerrano]

Hi everyone,

I'm a civil engineer who recently ran into a couple of interesting types of portal frames used in Germany. I've been trying to figure out if these are used in the US at all, and what they are called, but all my colleagues have been equally stumped. I have attached a very simple drawing showing each one of them. With my basic German, I can infer that they are called (in German) single-hip and double-hip frames, but for the life of me I can't recall having ever seen them in the US in any application, and was wondering what they would be called here, if anything. I'm afraid I'm too used to seeing rigid frames and two and three-hinged frames.

Thank you for your time,
Robert Ferrano

PS. There's also a peculiar type of pad foundation that they use (I recently had a meeting with a group of German civil engineers who are working on a project, which is how I came across these things):

http://de.wikipedia.org/wiki/Köcherfundament.

It's basically a reinforced concrete pad footing with a socket base that absorbs bending moments and holds the column in place during building. My German colleagues called it a "sleeve foundation," but I've never heard that used in the US. Does anyone know what we call these?

 

[csd72]

I wouldnt be happy to use the left hand one in most situations as it would have a tendency to sway under vertical loads.

The right hand one I have seen used very succesfully in a tily up building using concrete panels as the outer columns and a stiff central column with a haunch over.