Portal Frame/Gable Window Construction

[Mike Wynn]

Would anyone happen to have any details or technical drawings relating to a portal frame construction to make a gable window? Our structural engineer is designing the steel structure but it would be useful to see any past projects/hear your experiences. 

[JohnMo]

We constructed our frame in 90mm square hollow tube, it is around 3 to 4mm wall thickness.  Then we attached timber to the outside face and the windows sit in the wooden frame and in front of it.  As the frame attached below insulation level its a thermal bridge so needs to be insulated internally

[saveasteading]

3 hours ago, Mike Wynn said:

a portal frame construction to make a gable window

It should be a routine framed opening within the wall construction.

What is the wall construction?

 

Your SE will have allowed that the wall construction can support vertical load (up as well as down) from the rafters.

In reality the gable wall is often not a portal frame as it isn't spanning from foundation to foundation.