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Old 09-20-2017, 11:18 AM   #71 (permalink)
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Quote:
Originally Posted by Xist View Post
How about a Hobbit Hole?
Though it might not be so bad at all, I'd have some concerns about the humidity.

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Old 09-20-2017, 12:31 PM   #72 (permalink)
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Quote:
Originally Posted by Xist View Post
How about a Hobbit Hole?
Only works if you have a hillside location above the high water mark. Not really advisable in low-lying areas, like pretty much all of Florida and the parts of Texas affected by Harvey.
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Old 09-20-2017, 03:33 PM   #73 (permalink)
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Yeah, it would pop out of the ground like a coffin in Nawrleens.

Optimal is a 5/8th sphere. The bottom eighth balances the second eighth so you only get lift from the top three-eighths. Then the foundation is engineered for holding it down as much as holding it up.

When I was at the Darko wind tunnel, I got a chance to talk to aerohead about putting geodesic domes over Gothic arches to improve their curb appeal. We also talked about cheap pipe-frame domes/vaults for garaging that would also apply to emergency housing.

It isn't the material, it's the shape. On the Oregon coast people go out and build a house and put a big picture window in it for the view, then add a roof overhang for shade. Then a 100mph wind comes along and it hits the wall and it can't go up, so it goes through the picture window and fills the room with water and broken glass.

My parents built a 1750sq ft dome at the coast in 1980. All the shapes added onto the spherical shape were aerodynamically sympathetic, for instance the greenhouse addition was a gable pointed due East. No window was wider than four feet. It was ventilated through a small face-height (Joe sent me) trap door in the entry door.

After a big blow they'd drive around the neighborhood and point and laugh.

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Old 09-20-2017, 03:56 PM   #74 (permalink)
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Meanwhile, people advise having overhangs to reduce AC use.
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Old 09-20-2017, 05:23 PM   #75 (permalink)
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...because they design a house that needs AC. A toroidal air circulation pattern will do more than overhangs and overglazing.

The second owners shingled over the South-facing skylight in the greenhouse. You can see that they didn't use hand-split cedar. The main roof was held on with stainless steel staples. I didn't supervise the roofing (I did manufacture the dome panels) but it's probably no more than a 160mph structure.

When the wind blew 100mph, it didn't whistle or moan, all they could hear was raindrops hitting the windows. Quiet as a Mercedes at 100mph. Built on a sand dune, though.
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Old 09-20-2017, 08:57 PM   #76 (permalink)
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You want a system that runs on donuts?
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Old 09-20-2017, 09:24 PM   #77 (permalink)
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Old 09-21-2017, 02:15 AM   #78 (permalink)
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A lot of what she says is what sensible people would do anyway. Hanging on to the last gasp is what most disaster movies are about, and we all know how those turn out!
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Old 05-22-2018, 04:22 PM   #79 (permalink)
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Not even hurricanes just sever thunderstorms.
With an electric that doesn't have tesla range I guess you could back track and wait it out.
Something like a leaf may not even have the range to out run and out maneuver a nasty thunderstorm.
If I can charge at work I'm not worried about it, would be a challenge to burn up 20ish KwH in 12 miles.

Oh and it's that time of year again, for hurricanes.
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Old 05-23-2018, 12:59 PM   #80 (permalink)
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Does one need to evacuate during thunderstorms?

How does one pump gasoline without electricity?

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