On a round house made with earthbags, if you don build a dome but rather make a different kind of roof, do you need to do buttresses?
Round earthbag houses don’t necessarily need any buttressing, especially if they have a good strong bond beam at the top. Q: When you say “sufficiently buttressed”, are you suggesting that we place buttress walls on the interior of the house? I have seen diagrams of buttress walls used on the exterior of structures, is this basically the same idea? The exterior house dimensions are 20′ x 40′, the 40′ measurement is the length which is bermed against the dirt at the back of the house. How many interior buttress walls would be sufficient to withstand the pressure? A: The buttressing would depend on the specific design. Interior walls can be used to perform this function. The amount of needed buttressing would also depend on how high the berm on the outside might be. In general, with a straight wall buttressing (either interior or exterior) is needed every 10 feet. If the berm is only say 2 feet high, then this pattern may be sufficient. If the berm is much higher than this, then all of t
