Hopefully, I will be proud to say I designed it myself. It started out as just an offset(1m2 fb and 2 m2 smoke chamber. After studying where to place chimney, I decided to add an rf plate. Once the build started, I had to leave the area for 10 days or so and while I was gone, the bricklayer goofed and the result was one fb 2 cook chamber openings is above the line instead of both below. I decided over the weekend to change the fb 2 cook chamber opening to reflect original design. That will place both openings below the line and I am confident, based on good calcs that the air will flow.
I am only left with a few questions...regarding chimney height.
1. Is this referring to the length of chimney from the top off the cook chamber going vertical?
2. What about from that point to my exit point on the wall (this is indoor project) According to calcs, at 8 inches diameter, it calls for 40 inches and at 10 it calls for 25 inches...If I go with 10 inches dia. and 25 in length, do I the come off the top at angle and shoot upwards to the hole in the wall? How will the additional upwardly angled 100 inches of chimney affect flow?