Thanks,
Steve
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Standard Note: You may or may not know that I'm blogging Krys's and my eating life in New Zealand. Tune in to eatinginorinoco.blogspot.com and see what's got the media in an uproar.
http://sketchup.google.com/3dwarehouse/details?mid=4424f713497456b55cec6f2fc6dab36c&prevstart=0 is everything but.
There is also rumors of a H14 ... although, that is starting to look
like a long-house and might have wind-sheer problems from one side ...
Of course, looking like a more traditional structure might make it more
acceptable ...
Thanks!
Percy
I should take photos, but basically the ratcheting strap that was
holding the walls in (and transferring the force to the ground) got
broken under unfortunate circumstances, so it stayed, free-standing
except for a few drywall screws pretty much all New England winter until
the last major snowstorm in which the downward force was too much the
walls exploded outward and the roof fell straight down.
Percy
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I can't remember what materials your pentayurt was constructed of. Was it
OSB and 2x4 plus the racheting strap (nylon?)?
Thanks,
ken
Percy
hexayurt+u...@googlegroups.com.
On Tue, 2011-05-10 at 16:51 -0600, ken winston caine wrote:
> Hi Percy:
>
> I can't remember what materials your pentayurt was constructed of. Was it
> OSB and 2x4 plus the racheting strap (nylon?)?
Roof triangles were held together with 2x6 on the middle seam, and piano
hinges on the edges, with aluminum/tar flashing over the seams.
Sides were held by 4x4s on the inside corners, and firring straps around
the roof/wall edge. The drywall screws that were holding the OSB to the
4x4s pulled through the wood.
Never get tasty grease on the nylon ratcheting strap. Scavengers will
eat it. Even though it is nylon.
Percy
> > > > Sent from my BlackBerryŽ wireless device
1. A way to better protect the ratcheting strap, or to replace it with
something more indestructable.
2. A way to reinforce the OSB and screwheads at drill-points. Washers come
to mind, but still might be inadequate in the 60mph gusts we get during
spring windstorms here in northern New Mexico. Maybe a furring strip or even
a steel plate would do the trick.
As I recall, snowload was a factor in this failure, too. But it wasn't a
cause, rather a contributor once the tension band failed.
How much snowload did your yurt get this winter (the max in any single
storm)?
I ask because while it's rare, we do get a 3' or 4' dump here every third
year, on average. Usually though, most winter storms drop less than a foot.
Our snow is much drier and lighter than yours (until it begins melting and
icing and compacting), if yours is anything like the snow I knew on the East
Coast around NYC lattitude. Two feet of your snow might be equal in weight
to 4' of ours. I am curious how well the design handled serious snowload.
Appreciate that quick response, by the way.
On Wed, 2011-05-11 at 19:09 -0600, ken winston caine wrote:
> So, the challenges are:
>
> 1. A way to better protect the ratcheting strap, or to replace it with
> something more indestructable.
Yes, I'm looking at aircraft cable, or other stranded metal cable, like
I use for my more traditional ger.
> 2. A way to reinforce the OSB and screwheads at drill-points. Washers come
> to mind, but still might be inadequate in the 60mph gusts we get during
> spring windstorms here in northern New Mexico. Maybe a furring strip or even
> a steel plate would do the trick.
It wasn't sideways force that caused it to fail, the design is such that
unless the 60mph gusts are coming from inside the hexayurt, whichever
side or corner is being pushed inward, thus not straining the screws in
the slightest. You might have to anchor it really well, so it doesn't
scoot, as a whole, across the yard, but the structure seems
well-designed against wind.
> As I recall, snowload was a factor in this failure, too. But it wasn't a
> cause, rather a contributor once the tension band failed.
Well the tensioner failed, just before the last of the major storms in
February, where there was already a snow load, and another 10 hours of
storm dropped more snow, basucally bringing our accumulation over 90
inches that it weathered for the winter.
>
> How much snowload did your yurt get this winter (the max in any single
> storm)?
about 35" in accumulation, without a problem, earlier in the winter.
> I ask because while it's rare, we do get a 3' or 4' dump here every third
> year, on average. Usually though, most winter storms drop less than a foot.
> Our snow is much drier and lighter than yours (until it begins melting and
> icing and compacting), if yours is anything like the snow I knew on the East
> Coast around NYC lattitude. Two feet of your snow might be equal in weight
> to 4' of ours. I am curious how well the design handled serious snowload.
And that was heavy, wet snow, in blizzard conditions.
> Appreciate that quick response, by the way.
Not a problem. *grin*
> Thanks,
> ken
Percy
If you don't have a blog to document on, you could do a page on
appropedia, or even easier, a Google Doc that's set to be publically
accessible.
Useful lessons there to learn, and thank you for letting us know what
happened to it! I do need to set u the Hexayurt Failures page on
Appropedia too, where we can capture this stuff and learn from it.
Best,
Vinay
On Tue, May 10, 2011 at 8:37 PM, The Distinguished ...
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Vinay Gupta
Free Science and Engineering in the Global Public Interest
http://hexayurt.com - free/open next generation human sheltering
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"In the midst of winter, I finally learned that there was in me an
invincible summer" - Albert Camus
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There is also rumors of a H14 ... although, that is starting to look
like a long-house and might have wind-sheer problems from one side ...