A slide show of interesting work
http://www.nytimes.com/slideshow/2009/11/04/garden/20091105-tree-slideshow_index.html
(http://graphics8.nytimes.com/packages/images/photo/2009/11/05/20091105-tree-slideshow/31035355.JPG)
[cool]
I think many in thie group would appreciate this
http://www.nytimes.com/slideshow/2009/11/04/garden/20091105-tree-slideshow_2.html
Great minds.... and all that Frank. :D :D
http://countryplans.com/smf/index.php?topic=7903.msg101162#msg101162
John beat you by 3 hours 1 minute.
(I merged Frank's topic with John's for ease of following the though)
With that title I thought???the post was going to be more about buildings like this-
http://www.alamedainfo.com/redwood_trees_pg_2.htm
Way cool! I really like the ladder & railing for the loft 8)
damn cool that is.
This is one of my favourites! Reference link Simondale.net (http://simondale.net)
(http://www.simondale.net/house/images2/front.jpg)
(http://www.simondale.net/house/images2/wide.jpg)
(http://www.simondale.net/house/images2/candle.jpg)
(http://www.simondale.net/house/images2/kitchen.jpg)
The reciprocal roofs are pretty neat. I was playing with some sticks the other day and mocked one up, then stood on it.
(https://i180.photobucket.com/albums/x109/windyhilll/MVC-047F.jpg)
This is another earlier frame based on similar concepts, this is DaVinci's temporary bridge. I realized some purlins and common rafters formed an acceptable roof. This could be a bent constructed clearspan house frame of small diameter logs.
(https://i180.photobucket.com/albums/x109/windyhilll/MVC-038F.jpg)
So Don, is the pic. before or after you stood on it? ;)
Gotta like DaVinci. I have always wondered how one could incorporate a bridge design into a house structure.
Do you have too much time on your hands?
Even better, no TV :D
That roof held, but I could tell it was heavily overloaded. I had mocked it up to try to understand how they work. There is one in speedfunk's post above. I then calculated the breaking load on the model roof system and realized it was mighty close. I stood on it and had my wife start handing me books. Low tech but this is what it looks like after failure, a bending and then horizontal shear failure. I did several more and had all bending failures.
(https://i180.photobucket.com/albums/x109/windyhilll/MVC-049F.jpg)
I gotta admit, in the wintertime, kindling is coming in and it just doesn't seem right not to play with it one last time ;D.
This is another "hand in hand" frame. The floor system in Independence Hall is based on this beam arrangement.
(https://i180.photobucket.com/albums/x109/windyhilll/grillage.jpg)
The concept behind these is neat, they are self supporting. A reciprocal frame is a "closed circuit which is self supporting". In old floor designs it was a 2 dimensional structure often called "grillage". In more recent designs roofs are being framed in 3 dimensions.
At our snow load I figured up a small carport type structure out of logs on the DaVinci model. At ~24' wide x 16' deep it would take 3 bents using 6" minimum dia logs 10' long. 21 of those, 12 long purlin logs and rafter logs. Not a large pile, and of forest thinnings diameter.
Don, I find it impressive that it held you up, per scale thats alot of downward force. I've always wanted a nice circular earthbag walled cabin (read 16' diameter) with a reciprocal roof of raw logs. A nice, strong structure. I wonder how deb feels about packing bags with earth d*