On a rectangular earthbag wall I would like to have a tiled roof. How to do that (with long eaves)?

The roof structure on a house with vertical walls is likely to be the same as a conventional house, with trusses, rafters, or SIP's...and yes, long eaves is a good idea. Q: We would very much like to have our house design incorporate a basement, to take advantage of the temperature differential and also to gain the greatest possible space for the least use of materials. Are earthbag walls suitable for basements, perhaps if wrapped on the outside with a 6mil polyethylene or something similar? A: I think that earthbags are especially well-suited for below-grade walls. The earthbag house I built in Colorado was substantially bermed into a hillside, and I just used two layers of 6 mil polyethylene as a moisture barrier before backfilling. Obviously the walls need to be sufficiently curved or buttressed against the lateral pressure from the earth. Q: I really liked the little dome house in Mother Earth News Magazine. I want to build these little houses for my mini goats...they would just ...  more