dmun's 36" geodesic oven part II Design Styles, Chimneys and Finish Discuss dmun's 36" geodesic oven part II in the Pizza Oven Design and Installation forums; The preliminary layout of the roof framing assembly was done on the patio: That plywood rectangle it's layed out on ...

[dmun]

The preliminary layout of the roof framing assembly was done on the patio:



That plywood rectangle it's layed out on is the soffit, the underside of the eves. Getting something that wide properly mitered was suprisingly difficult.



Woodworking clamps held it togther temporarily.

Here I start to cut the underlying ceiling grid:



The facia boards, that form the face of the eves. (facia - face. Get it?)

[dmun]

The soffit, facia, and ceiling grid were assembled on ground level, and lifted in one piece. Here it is in place:



The "easy" half of the roof framing complete:



A side view:



Adding to the already non-trivial nature of building a hip roof, is the fact that there is an off center hole for the chimney. The chimney needs two inches of clearance to the combustible frame. The side of the masonry is meant to go up on the center line of the tower, so the central framing pair needs to be two inches offset. Yikes. Just to keep it interesting, i decided that the hip roof needed to incorporate an ogee curve.

Here i'm framing out the hole for the chimney:

[dmun]

Another view:



From the rear:



From the front:



From the house, the roof peeks over the front studio roof, just above facia level. Here's the view from the second floor of the house:

[dmun]

Laying out the roof sheething from a grid, from the CAD drawing. Once I cut one out, i used it as a model to cut out the others. That was the technique I used for the curved rafters as well:



The roof sheething pieces ready:



In case you were wondering, (I was), the sheething does bend to the curve:



A view from the top of the masonry layer, up the now enclosed tower:

[Unofornaio]

this build has really caught my attention and I'm looking forward to its completion (as I'm sure you are) its really looking great.
I had to reply (other than to complement you) on the very first photo of you on the patio. It reminded me of when I first built my backyard oven years ago. After it was done I just didn't look at "wood" in the same way, Id be on a job and looking at the scrap wood thinking..hmmmm I wonder how that will burn..and If I knew how to do it I would have re-posted that picture of you with the caption "I wonder how that wood will burn?"
Anyway my sense of humor is kinda twisted so if you don't think its funny sorry for any offense.

[dmun]

At least I don't have to worry about wood for my seasoning fires. I have a mound of scraps and leftovers. You want to see something burn? Try cedar shingles. Whew.

[Hendo]

David,

The tower is looking great. I can just picture the roof clad in colourful tiles like they use in Burgundy. Very grand!

Cheers, Paul.

[dmun]

Well, it's high summer, and one can see the advantage of moving the construction inside where it's air-conditioned,



but the problem is that heat rises, and the interior of the tower tends to be a sweat-box, even with the AC on.

The first interior job is doing the insulation. It's a miserable job in the heat, but of course one never does it when it's cold.





That hole in the side, is an exterior access port for the shaftway, which will be covered by the chimney.

[dmun]

Since you can't leave insulation exposed (the vapor barrier is combustible) I then move on to a job that I don't think anyone in America has done since 1962 - installing knotty pine paneling. In the flood this spring, a neighbor tore out the basement rec-room from that date, and left a huge pile of 3/4 inch milled knotty pine paneling. I thought it would make a neat interior finish to the tower.



You remember those round shaftways going through the masonry part of the oven? They continue up through the tower, as vee shaped recesses in the thick side walls. Here's the one on the left:



Here's a lower view, showing the (temporarily) covered shaftway. This side, which will be two inches away from the chimney, needed everything combustible flush with the surface of the paneling, to maintain the two inches to combustibles.



An overall view.

An upward view, without flash, showing how the clearestory window will illuminate the tower:



It's all well and good to use recycled lumber, but it's a lot of work. The knotty pine paneling is blind nailed, and held together by tongues and grooves. A lot of those were damaged when the walling was ripped out, so I had to pick and choose which pieces to use where it was most visible.

[swripley]

David,

Wow! Beautiful build. I especially like the curved lines of your roof. I am currently grappling with my very simple hip roof design and am stretched to my maximum abilities. Your's makes me feel like a slug!

Sharon