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large interior wall

large interior wall

large interior wall

(OP)
I am designing a 40 feet high partition wall inside a very large factory building to separate different air-quality areas. I am using sandwitch panels supported by cantilevered steel columns. For design, I use the customary 5psf load and basic design principles. Is that all I need to do?

SAM
CSE

RE: large interior wall

Seismic if applies. Make sure you allow whatever roofing to deflect too.  

RE: large interior wall

I would check internal wind pressures as well.

RE: large interior wall

40' is a big cantilever, even if the loading is not too much.  Why not brace the mullions at the roof level?  You could design the top connection so the roof deflects without loading the mullions vertically.

RE: large interior wall

If this wall is for separation of air quality areas, then what happens at the top of the wall? Would not the gap between the top of this partition and the underside of the roof be plugged / air stopped / fire stopped? Or else, is there a false ceiling at 40 feet height. Also considerable pressure difference can result across partition walls in the unlikely event of broken windows on the exterior.
Like hokie66 suggested, bracing at the top is a better option.

RE: large interior wall

I remember when a large cyclone hit my area not so long ago. When openings are created in exterior walls, the pressurization inside the building often blew out internal walls and ceilings.

But these are once in a lifetime events which a factory could probably accommodate with insurance.

RE: large interior wall

(OP)
Thanks for all the good advice folks.

 

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