offset refurbish

[rbbennett]

I was given a large offset with an upright on it (pics attached). Per the calculator, without the upright figuring in the FB is 145%, if I add just the extra horizontal length (20" OD) then it is about 89%. Do I need to add the overall volume of the upright? or just the horizonal length.

Pit dims are FB 16" D X 24" L, CC 20" D X 37" L, Upright 20" D X 54" T from centerline of the CC and the Stack is 6" D X 12" T on top of the upright. So top of smoke stack is 60" above top of CC.

I have to replace the bottom of the upright (rusted out) and the end of the FB below the CC (also rusted out).

[Dirtytires]

Only the horizontal length is added in the calculation. The vertical is "free" space but I think you will find the temps pretty un-even for cooking so it will become mainly a warming box. Trying to keep that big of a vertical up to 225-250 for smoking would probably make your main chamber too hot to be used. You might consider removing it if you don't need the space...that would make a really nice patio pit and still be plenty big enough for family use.