| 摘要 |
PURPOSE:To secure such an external wall panel that is easy for conveying work by expanding an opening of the external wall panel upward, while making a vestibule door possible to be housed and fixed in this opening at the time of conveyance, and also making this vestibule door projectable from the external wall panel at the time of construction. CONSTITUTION:A doorway opening 3 being formed in an external wall panel 2 is expanded upward, and a first bolt hole 7 is installed in and around the upper end of symmetrical vertical frames 6 surrounding the opening 3. At the time of conveyance, a slide frame 8, sliding a door frame 13 of the vestibule door 1, is fixed upward the vertical frame 6 by a joining plate 9 and a bolt 10 via the bolt hole 7, and the vestibule door 1 is housed in the opening 3. As for the vertical frame 6, a second bolt hole 12 is installed beneath the bolt hole 7, while the slide frame 8 is fixed to it via the bolt hole 12 at the time of construction of the external wall panel 2, and the vestibule door 1 is projecting from the external wall panel 2. With this constitution, panel height at the time of conveyance is lowered and thereby simplification for panel conveying work is thus promotable. |
