In the TOP-DOWN basement construction system, from top to bottom, the slabs bracing the perimeter walls and the piles executed at the beginning of the works. It is used to save time, but especially when you have to watch closely the lateral movements of the terrain. | Civil Engineering&Architecture

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Semi top down construction method for construction of an underground structure. Semi-top-down construction involves a combination of top-down and bottom-up approaches. It typically starts with the overall structure being defined at a high level, and then subsystems or components are developed using a bottom-up approach within that framework. This method allows for a balance between a top-level vision and the flexibility to refine details during the development process. We have covered all these

Top-down construction method. In most common construction methods, buildings with underground parts are built by the bottom-up method where sub-structure and super-structure floors are constructed sequentially from the lowest level of basement to the top of the building. Though this conventional method, also called a bottom-up method, is simple in both design and construction, it is not feasible for the projects with limited construction time or with site constraints (size of location, legal iss