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Loft questions for a 6m roundhouse

 
Posts: 9
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Hi all,

We're planning to built a 6m  diameter round earthbag kitchen & dining, and I'd like to put a loft in that. I'm still not sure how this is done. If anyone could point me to some videos that shows this, that would be great.
We're planning to build without concrete, and will try to use the materials from the land. The road to the land is really bad right now, so anything transported from outside will be really costly. We have strong bamboo and areca nut/coconut trees, smaller trees around, so we plan on using those first.

Questions:
1. How high/when do I start putting in the joists?
2. How high could the center point of the roof be?
3. How do I make the flooring for the loft?
4. What's the highest reccomended center roof height, so that we can make the loft roomy?
5. We plan to make a 10m diameter earthbag  home later on as a second iteration. Would a loft be possible in this diameter??

Please let us know your recommendations. Thanks!
 
pollinator
Posts: 1433
Location: Bendigo , Australia
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I suggest you look at a few places around where you are, and at pictures across the internet.
You will pick up a good idea of what you may want, quickly.
 
gardener
Posts: 3174
Location: Upstate NY, zone 5
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1. How high/when do I start putting in the joists?
How much headroom do you want below the loft? That is the height where you start setting joists.

2. How high could the center point of the roof be?
The higher the center is relative to the sides, the steeper the roof will be and the better it will shed rain and snow. How much rain or snow do you get?If you have no center post, the roof rafters will push outward on the tops of the walls. The flatter the roof, the more it will push out; the steeper, the less it will push out. The loft floor framing will counter the thrust of the roof rafters, but if you have tall loft walls, those walls will have to resist the thrust by themselves. Short loft walls, or even no walls at all above the loft floor, combined with a steep roof for loft space, will be strongest.

3. How do I make the flooring for the loft?
You will need loft floor joists spaced not more than a half meter or so apart to support the flooring. All dimensions depend on what kind and thickness of floor planking and joists you can get, and no answer is possible without more detailed information.

4. What's the highest reccomended center roof height, so that we can make the loft roomy?
There is no way to answer this without more detail. How much of the loft do you want to use, and how high does it need to be around the edges?

5. We plan to make a 10m diameter earthbag  home later on as a second iteration. Would a loft be possible in this diameter??
A loft is always possible. At 10m you will definitely need some support posts from the ground in the interior, but size and location will depend on many factors.
 
rahmi hidayat
Posts: 9
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Thanks for the reply Glenn! I just saw this now.

"Short loft walls, or even no walls at all above the loft floor, combined with a steep roof for loft space, will be strongest."
So I've decided to put the first floor at 7ft, and then 3ft wall, then pitched roof above loft. Does this sound okay? 3ft wall so we can have a bit more head space above.

The loft is only going to be a half loft.
 
Glenn Herbert
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Posts: 3174
Location: Upstate NY, zone 5
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As long as the center of the roof is supported by a post so the walls don't have to work at keeping the roof from spreading, your plan sounds fine.
 
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