[The Great Fumar]

Yes PJ I have seen it done and first they wet the sand with a salt solution that has a termite poisen in it and pack it down with tamping machines.....then they lay down a heavy layer of plastic (very thick) and build a grid of rebar and they are all wired together , This gives a very strong platform to set a house on .....this one of the reasons they say you don't have to worry about termites for the first five years .....After that you'll have to have it done by outside vendors.......You will have cracks but they shouldn't be serious.......They do build a very good house here so relax and enjoy.....
the layed back fumar