| 摘要 |
PROBLEM TO BE SOLVED: To provide a folded-plate roof re-roofing method which improves the work safety and enables the re-roofing of the folded-plate to be performed efficiently.SOLUTION: It is arranged to have a lifting holder 17, which can freely shift along the ridge direction in a region M where sectioned folded plates are re-roofed, and can freely move up and down. The lifting holder 17 comprises: a first engaging part 17d, which is formed at one end of the cover 17 aligned in the ridge direction, and to which one end of an existing sectioned folded plate 6C is engaged; and a second engaging part 17e, which is formed at the other end of the cover 17 aligned in the ridge direction, and to which one end of a newly-installing sectioned folded plate 6Cis engaged. Shifting the lifting holder up and down and in the ridge direction removes an existing sectioned folded plate and lays a newly-installing sectioned folded plate in the position where the aforementioned existing sectioned folded plate was. During the removal and laying time, the opening, which is created at the location where the aforementioned existing sectioned folded plate was lying, is kept closed by the cover 17 until the newly-installing sectioned folded plate is installed. |
