Stabilised Soil blocks can be used to construct storeyed buildings.
In Kenya, people use them for ground-floor only buildings since the technology is relatively new. In other countries which have developed the technology further, the soil blocks can be used to construct storeyed buildings. Se pictures here:
http://www.a4architect.c...ocks-storeyed-buildings/As Iron Sharpens Iron, So one Man Sharpens Another.