1. Prefabricated housing: the foundation required for prefabricated housing is simple, which can be made into a strip type or pier type foundation, or even can be directly placed on the ground without foundation, and the indoor ground does not need to be leveled.
2. Movable plank house: the foundation treatment of room K is troublesome, and the concrete foundation needs to be poured. the house and the foundation are connected by expansion bolts. the first floor of the house needs to be leveled with concrete. after the house moves, the foundation cannot be reused.