This emergency shelter was deemed a failure and rejected for use in relief efforts. Those involved with the design and evaluation of the shelter all failed to realize one simple point. Pure sand in sandbags (earthbags) will slump and shift as shown. But tamped soil consisting of an appropriate sandy soil/clay mix will compact into solid walls much like rammed earth. Also note how a running bond was not used. Full bags should overlap joints below; half bags should start alternate courses. So here’s an example of perfectly good shelter design, in my opinion, that didn’t pass grade due to lack of understanding.
The same is true of crude sandbag walls built by the military. These hastily built, temporary walls and structures are typically just bags of sand stacked on top of each other. If you add about 25% clay with sand or sandy soil, mix thoroughly and tamp the bags in level courses you will have a vastly superior wall system. This simple point makes a big difference in wall stability. That’s one reason I prefer the term earthbag building over sandbag building.