Here’s a real nice earthbag/ferrocement rootcellar plan from Karl in the Missouri Ozarks. It is 8’ across, has 2’ of soil on top and beautiful stonework in front. Great job Karl!
Karl describes his rootcellar in more detail: The U-shape on the top of the bags is a row of cement beam block that will hold the entire roof to the bags via re-bar pounded down into the earth bags. I opted for this instead of using bags to create my arch because I plan to pile a bunch of dirt on top of the root cellar and I believe this will be stronger. We’ll grow some ground cover over the top of the rootcellar and pump house.
Earthbag Rootcellar Plan
Earthbag Rootcellar with Ferrocement Vaulted Roof
Entrance to Earthbag Rootcellar
More photos and information on Karl’s Pile of O’Melays blog.
We’ve also added it to our Projects pages.
Earthbag Building Blog 
[…] From the Earthbag Building blog, although I don’t know where I’d have room to put this unless I grew my squash and pumpkins on top of it, and The Mother Earth News earthbag root cellar/garden shed. […]