Selecting a chimney size for a woodstove build

[MatBirch]

I am building a woodstove for my pole barn shop. It's built from 1/8" thick 12" pipe, around 18" long. There is a smoke box on top that is 9x10x12, which is where the flue will will exit.
How do I determine what size chimney I should use? I'm guessing 6" as it seems to be the most common, but I also find 5"...

Thanks!

 

[BlackjackNA]

Dunno, but DO know there is an equation as to how high the chimney rises in relationship to the roof peak.

NA

 

[Jackfre]

That is about the size of the wood fired saunas I used to build. You are going to be burning small stuff and 5" has plenty of capacity. How tall a stack?

 

[BillK]

Mat,
Are there any commercial stoves that are very close to the same size as yours ? If so, maybe see what they call for ?

 

[jar944]

5" would work

I built mine 12"x12"x24" and used a 4" flue