Clerestory window

[RiverSea]

Can anyone please help me understand how to analyze structure with clerestory to lateral loads?
Please find below image as an example.
What I am thinking:
1. use a steel vierendeel truss as the frame for the window. (Do we have other options like timber truss or anything elese?)
2. What is the proper connection between window and timer roof above & timber wall below?

 

[RiverSea]

For wind load, do I consider the following path, wind travel from timber wall vertically to window truss and then truss transfer wind to both ends horizontally? OR, do I design such a connection between window truss and the timber wall below to transfer the wind load (moment)?

 

[RiverSea]

Can anyone please provide me design examples, if any? Thank you.

 

[jdgengineer]

Most importantly you need to pick a load path.

For wind loading out of plane I would likely like to see full height columns running vertically and serving as the window mullions. They could be plate steel potentially. Alternatively, you could design the window sill to span out of plane across the length of the window.

For in plane forces you would need a cantilever column at the clerestory to take the lateral force to the shearwall below. How you design those columns is a matter of engineering judgment. Some would consider those to be collectors and size with omega forces and R of shearwall. Others would consider them to be designed as R = 1.25 for ordinary cantilever columns. Both approaches have some merit.

 

[RiverSea]

Thank you. Even if I have run some mullions in the timber wall I still have a 4m opening that doesn't allow me to do so. So the window truss will have to transfer the out of plane loads horizontally more or less. If I don't have any mullions, the window truss will have to span 9.3m, which is quite large and I don't think 90mm hollow tube will work for chord. In this case the roof diaphragm is not helping because the window truss goes from one end directly to another, so I might add one steel column at mid span. Does that sound reasonable?


Do you mean something like this?

 

[RiverSea]

May I also ask what connection should I use for the bottom chord to the timber wall below and the top chord to the timber beam above?

 

[JLNJ]

Your in-plane sketch seems doable. Check deflection compatibility with the window.

I’m still confused about your out-of-plane scheme. You will have a large reaction from the overhead door jamb which needs to be resolved. It seems to me that this load path is the critical one to think about.