Rural case. The house cannot be inhabited after the disaster but enough land exists for building in the same plot. Very low density.

Suburban case. The house cannot be inhabited after the disaster but enough land exists for building in the same plot. The density is higher than in the rural case.

Urban case. The house cannot be inhabited after the disaster and there is not space enough for another construction in the same plot. The density is higher than in the suburban case.

Mid-rise or high rise building. The building cannot be inhabited after the disaster. Very high density.

roll the mouse over each of the options of cases 1 to 4 (left diagram) to see the possible variations of each case.