mattcamp wrote:Yeah, it was just omnigraffle being weird... the standard hexagon shape it has isn't actually a true even-sided hex.
Once I drew it out using individual panels and the right angles everything matched up with the expected dimensions.
Sadly test building isn't an option since I'm in the UK.... I've built yurts at BM before however but we're planning a significant increase in the number of them this year (and hopefully reduction in the numbers of RVs!) so I need to do some careful space planning to fit everything in.
Test building is an option. Cut out a scale model out of cardboard. (any cardboard box will work.) scale to 1" = 1'.
The dimensions of the two fill size yurts above are exactly correct-- whether you bevel the edges or not. (well, as exactly correct as you could expect for anything put together with tape)
It's simple math. Your longest dimension is 8'. If you draw a circle with an 8' radius, the entire yurt will fix exactly within that circle. If your doing it on paper to scale, you can even use the compas to divide the circle to see exactly where your corners will go. Just place the compas on the edge of the circle you drew, and draw an arc. Move the point of the compas the where the arc intersected the circumference and draw another arc. When you're done you'll have what looks like a six petal flower inside your circle. Each petal point is where the walls line up.
We did this on the playa using an 8' rope for a compas on our floor tarp and it positioned the walls exactly where they should be. We don't do this anymore, we just more or less wiggle/drag them in place. Some people make the roof first and use the corners of the roof to mark the playa for the walls. We don't do that anymore either, as once you've built 30 or 40 of them you pretty much get the feel for it.