The easiest definition for self-bracing is hidden in the name of Top Down: implementing the structure from top to the bottom, it means constructing from the same level of earth towards the foundation level. In fact this method of construction only works for buried structure by eliminating soil self-bracing system (nailing, anchorage, Truss and etc.). Would led to high levels of safety in controlling the construction hole while building the structure. In this method of construction first the assembled columns are installed in their accurately calculated place which was drilled before, next the construction of ceilings begins on the columns. Therefore after installing every ceiling and its retaining walls, soil excavating of below ceilings are also done and the process continues till reaching the foundation level.