Exhaust Stack Design

[StructTaco]

I am designing an exhaust stack for a diesel engine/generator. The stack is 55' tall, and has exhaust temperatures around 650 degrees. I am doing the structural design. The SMACNA GSSC Design Guide limits the design to 300 degrees. Is 650 degrees a problem? How do I account for the temperature? Will the base plate move to the point that I shouldn't anchor it with any welded connections?

Just thinking out-loud...are there any other good design references for self-supporting/free-standing stack design?

Thanks,

StructTaco

 

[MikeHalloran]

SMACNA seems to be saying you need a different design.

Herein is an example of one way to do it:

http://www.blanchardmachinery.com/p...rary/CatAppInstGuide/EPG/EPGexhaustsystem.pdf

Mike Halloran
Pembroke Pines, FL, USA

 

[MiketheEngineer]

BTW - double posting is frowned upon

But 650F seems a bit high and I would expect premature stack problems.

 

[JStephen]

ASME has a stack standard- Steel Stacks STS-1 - 2011. It's been ages since I looked at it, and I don't remember the exact scope covered.

 

[oldrunner]

Why not a supported stack within your stack? Check out Selkirk-Metalbestos. We did a number of stacks for them years ago. I below they are in Idaho.l

 

[StructTaco]

Thanks everyone for the helpful posts.

MikeTheEngineer: I apologize for double posting, I wanted to reach the structural engineers in this forum for the structural aspects/views, and the mechanical engineers in the ventilation forum for the heat/temperature aspects/view. Can I expect all mechanicals to see the structural forums, or vice versa?