Double Floor?

[sandy12]

A double floor design, there are also potential disadvantages to consider. The series of joists above and below do add considerable weight to the floor that must be supported by the binding joists that are found along the wall. Another important consideration is the height that this floor design adds to the overall structure.

[kamlon]

The main advantages of a double floor is the stability that the design provides for the overall structure. The placement of joists to create a ceiling above and a floor below helps to secure the walls of the building in a unified pattern that decreases the potential for instability as the walls extend upward. This added stability to the walls is also important in terms of providing support for the roof.