How to Build an Earthbag Dome

Step 13 Buttresses

Continue building the buttress at the same time as the dome. The bags and barbed wire interlock at every course. We added a few ½” pieces of rebar for added strength where it seemed it would do the most good: down through the top of the bags to help preventing overturning, and where the buttresses connect to the dome. The buttresses are stepped to match the slope of the earth. The steps make it easy to climb on the dome. The lower part makes a nice bench.