Applications of implementing Top-Down
Top-Down can be implemented regardless of dimensions and depth of the construction filed. But sometimes due to the danger of restraining the construction hole Top-Down is the only way of constructing the structure, below are some of the advantages of implementing this method :
- When due to the legal reasons is not possible to use nailing, anchorage or other systems of restraining the construction hole due to not being able to access ground floor or basements of adjacent buildings.
- When due to the technical reasons the common systems of restraining the construction hole such as nailing, anchorage and delimiter truss cannot be used, like situations when level of the project is covered by soil hand or unsuitable soil or when the depth of excavating is high and restraining it can be very dangerous.
- When due to the opposite structures within the construction area the possibility of using common methods of excavating does not exists, in situations that the project is in intersection with city structures such as tunnel, roads or the crossing paths of underground cables and pipes from the area of construction or around it.
- When there are crucial buildings such as hospital, army or crisis management are around the project and it is necessary to properly restrain the soil.