Up to your seventies, most homes had been of "double brick" construction on concrete footings, with timber floors laid on joists supported by "dwarf walls". Later houses have mostly been of "brick veneer" building – structural timber or, a lot more a short while ago, light-weight steel frame with a https://www.evernote.com/shard/s502/sh/136a201c-247f-6604-4564-bd4bf9d6b74b/VUWFWsXTx6kj_f2ylA2KiTVj_TPBLyvgMjWDo42DTlXIebwkkgSVcfmojg