| 摘要 |
At least one heat destructive layer is embedded between an upper portion made of concrete and a lower portion made of concrete in a structure at the time of the construction of the upper portion of the structure. The heat destructive layer has at least one heating device and at least one heat destructive part made of plastic material or the like. Electric power is supplied to the heating device at the time of the destruction of the upper portion of the structure, whereby the heat destructive part is to be destroyed and easy destruction of the upper portion of the structure can be obtained.
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