| 摘要 |
PROBLEM TO BE SOLVED: To provide a replacing construction method for reusing an existing iron door frame corroded by damage due to salt and rain water and buried into concrete without destroying it and shortening appointed date of delivery and to provide a door capable of preventing fire and dew condensation and insulating sound and used instead of an existing corroded door. SOLUTION: Rust-inhibitor 3 is applied to the whole frame into a condition of an existing iron frame 2 buried into concrete to shut off the iron frame and outside air for the first time. Next, a stainless steel frame 6 is covered in four directions, and caulking materials 13a, 13b, 13c are applied to shut off outside air for the second time. Stainless steel is used in the door, and baking coating is applied to shield the whole door in order to prevent corrosion further. The door 8 has a double structure, and tanks 9a, 9b are installed. The inside of the tanks 9a, 9b is put in a vacuum condition to insulate sound and prevent fire and dew condensation. COPYRIGHT: (C)2005,JPO&NCIPI
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