...occasionally gets wet during a major rain event...
1. I could do wooden platform of some kind. Our immediate goal is to do something that will raise the level of the barn a few inches and be clean and easy to walk on.
2. A better foundation for our project, if we decide to go with an earthen floor, would be gravel of some kind.
Questions surrounding number 2.
1. What type of gravel would be best?
2. How much?
3. I have read about building up flat spots with packed earth as a foundation. Do you see this as a viable option.
4. What about a combination? Gravel then rammed earth?
5. It looked like the Wariguri Chi-gyo could be constructed without anything holding it in on the sides. Correct?
6. Probably most important question, would there be a better alternative to a cob floor? Looks like tataki would do better with moisture? Limecrete? Hempcrete?
I am beginning to gather the importance of keeping cob dry. Our test patch has not indicated any problems yet and it gets wet regularly, but I have heard it enough to believe it.