| 摘要 |
<p>A method of adding extra floors on a building, whereby the floors, which are to be raised, are formed by lifting up the mantle, the partition wall (9) and the midsole elements (6) and mounting them in place. At least a part of the raising part bearing-frame is made to run from the ground off the earth footing, whereby several load-bearing structures running vertical from the said earth footing, are placed outside the building, and which in the initial phase of the method the said bearing structures are extended to the final height of the building, and whereby at least said structures (2) on the opposite sides are interlocked and that in the method bearing-force from said load bearing structures (2) is arranged to at least some structures of the extra floors forming structures (6;9).
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