Clients and investors have repeatedly shown their interest to reduce the amount of their investment by finding ways for buildings to be put into operation with unfinished underground stores, the stores being finished on account of profit gained from operation of the building. Indeed, it may be reasonable under certain circumstances to put a building into operation with finished aboveground structures and limited number of finished underground stores minimally needed for the first period of operation, so that the whole project could be completed without barring operation of these stores. This is particularly vital for underground parking-garages, storage premices and garages. This is no secret that in densely built-up urban areas, the cost of underground construction projects essentially exceeds that of those aboveground; however, owing to rise of the cost of land and to the overall urbanization, underground construction gets more and more demanded.
The top-down method in civil construction have made such an obvious progress that the second-turn construction of underground stores does not seem to be fantastic so far. On demand of the client, we are at present ready to give our proposals for any future project.
Under market economy, a demand is always answered with a proposal. Given the fact that the baret system of erecting support structures so traditional for western countries has from the very beginning been orientated exclusively to the classic top-down construction method, there is no wonder that the demand for our technology which allows to simultaneously proceed with the construction both upwards and downwards from the ground level raised so much.
Owing to an essential cut in the overall project construction time, the use of
bored columns characteristic with high rigidity and carrying capacity gained very soon after the erection brings the top-down method of underground construction to a new quality level. It is at least unethical to compare the cut-and-cover and the top-down method on the basis of the cost of the project underground part only and on the basis of the classic «top-down» scheme.
Under particularly adverse site geological conditions and in densely built-up urban areas, the most safe and at the same time combined top-down method does not practically have any competition, since in case of the cut-and-cover techniques, direct construction cost of the underground part of the new building should be added with costs associated with the consolidation of foundations and structures of neighboring protected buildings.
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The full version:
- 25 drawings of the construction management design;
- 130 illustrative pictures, detail description, review of the solutions taken.
The reduced version:
- The majority of drawings and illustrations represented as photo-frames.
