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http://ift.tt/2cum4Pi:kayleigh-janes replied to your post “i can’t do math”
You have pictures, right? So maybe you can sketch the shape you need according to them. I do think you need trapezoids that overlap slightly for the roof. (maybe use the shape of the roofbeams?) The sides you can use rectangles. The overlapping is important; heat rises and if there are gaps, it will escape.
Well, it’s a cone shape, so there are no sides. (I mean, the walls, but, I’m not even bothering to worry about that; all I need is 45 feet by 5 feet of quilt.) There are no roof beams really, but 29 rafters, evenly spaced all around.
So what I did was figure that the center hole is 33″ across, meaning the circumference is about 103″; the outer edge is about 540″ around. Dude did a whole bunch of math but the end result is that the rafters are 70″ so my trapezoids should be 70″ long at the middle part. I have not yet been able to figure out what kind of arc the bottom of the trapezoid should have, so I’m just not worrying about that. If it sticks out it sticks out. I can fold it under or whatever.
So– if I divide that into six panels, each panel needs to be 18″ across at the top, and 90″ across at the bottom.
I had three curtain panels that were 70″ wide and if folded and in one case pieced gave me alllmost 90″ on a side, so I cut those out– each is double-layered– and then I lay out assorted salvaged materials to use as batting. one panel will have old stolen hotel towels my sister’s ex-boyfriend used to hoard. One has an old double mattress pad that frayed in the wash. And one has an old twin blanket that’s frayed in several places. Then I cut three old sheets to be a backing. Four layers of material, including one fluffy layer, I figure is plenty.
I need to assemble those and then run some lines of quilting across them. I don’t know how well my sewing machine will do, but it’s technically supposed to be good for quilting, so we’ll see.
Then I’m going to spray-adhesive a vapor barrier to the back of each panel, or maybe attach it by binding along the edges; I have an old vinyl tablecloth for one, a salvaged waterproof mattress pad for another one, and an old shower curtain for the third. (I might renew the waterproofness of those with some of that spray-on NeverWet shit, since I have some. I’m debating doing Never Wet on the rearmost fabric layer once the panels are quilted, but I don’t know; I sort of want them to remain washable?)
That’s half of what i need, but even cutting that out was exhausting. I feel like some kind of goofball, but I’m absolutely dead beat from assembling three of the six panels I need. The other curtain panels i have are not as big, and I’ll have to piece them more, but I figure you know what, I’ll start off with three. It’s not going to be that cold in September. I’ll get those panels installed and check the fit before I start making the other three; if worst comes to worst, I can hang a couple of comforters from the rafters and close off the half of the yurt with the bed in it, and be cozy in there.
Ideally I want higher-loft batting, but I figure, this is going to be squished under the rafters. That’s just a basic insulation and vapor layer. I have some decorative hangings I was working on with high-loft quilt batting, and I’ll tie those to the rafters, and the rafter space will be dead air for insulation, I hope. Just– something’s better than nothing, and I’ll start off with something, and take it from there.
The other thing I want to make is a door, which will be easy, but I think I want to put dowels or sticks through it so it’s rigid side-to-side, and won’t flap around. Maybe I could install some kind of catch that way– an eye hook on the wood, a bungee on the door frame?– to keep it from blowing open, and to secure it when I’m not present. At the moment the door is a flap of canvas that’s too long and too narrow.
I also should make a new oerkh, which is the proper name for the roof hole cover– the one I got with the yurt is nice but since I hemmed it, it’s now slightly too small; if I put an umbrella under it, it doesn’t cover the whole hole. And if I don’t, it’s right at the edges, and that hole is really prone to leaks. Any water on the roof goes right into the toono, which is the center ring, and the ring is hollow on the sides for the rafters to slot in, and water runs into that and then goes everywhere.
I got a new clear umbrella to go in there– a big one, a golf-sized one with a hook, so I can hang something heavy from it and leave it there.
But covering the roof with insulation is going to make it very dark. Good thing I only use it as a bedroom!
