I'm trying to figure out how to respond to individual posts. Until I do, this is it. lol
Scott:
Nothing is built, yet, correct. No amenities...nothing. i'm in Central Arkansas in a 20-foot camper suitable for deer camp. Candles/terracotta did fine for me this winter until we had actual snow. Arkansas isn't prepared for weather like that, so it shut down the state for a week. With no way in or out, my daughter made me stay with her that week, so i don't know how well that set up would have performed with those ridiculously low temperatures. As long as the outside temperature didn't go below 20*, i could keep my immediate space at about 40* When it was in the 40s, I could keep it as warm as 50*. (I moved to Arkansas from Ontario, Canada 5 yrs ago. I don't like cold, but I can live with it.)
The house will be ICF since i'm in tornado alley. I'm looking RMH for whole house, as I want to be as self-reliant as possible. I'm also looking at other natural sources of heat to supplement the RMH, such as capturing the heat on the south wall, though I'm still researching that, so i can't speak intelligently about it, yet. Walk-out basement will mean part of the basement will be underground and somewhat insulated that way. The square footage is 2400 on the main level, and that's what i'm most concerned about having heated. In a pinch/really nasty cold, I have electric space heaters we can use.
Cristobal:
That is VERY helpful info!! I plan a simple gabled roof, so I like hearing that!
I was planning the heater to be centrally located and on the main floor (unless it made sense to put it elsewhere), as I expect that is where we will spend most of our time. I'm glad to hear you say that about the columns. That's what I was imagining, but I've not seen it done anywhere...haven't seen pics or read of one being used on an upper floor. Good to know it can be done! Any suggestions on how to build those columns? The high-rises in Toronto are build with poured concrete with huge rebar cages inside. This is what I've imagined I would need...something similar but on a smaller scale.
I wasn't sure about masonry, but after more perusing and with what you have to say, I'm thinking that's the way i'm going to go. Good idea about kitchen stove placement.