With concrete you have outsourced, not solved, that problem There's a lot of drystone walls here, in Aotearoa, but not of buildings. There is a related techni

With concrete you have outsourced, not solved, that problem There's a lot of drystone walls here, in Aotearoa, but not of buildings. There is a related technique for buildings, building from rubble, using lime morter. I live in a building partly built that way