| 摘要 |
PURPOSE:To make reinforcement work by means of a stiffener attainable simultaneously with side plate working, by covering a side plate stiffener with a thin plate-make temporary work side plate stiffener cover consisting of such a sectional form that an airtight seal holds airtightness in its space with the side plate and so as to make it slidingly passable upward in a smooth manner. CONSTITUTION:A temporary work side plate stiffener cover 4 consists of a trapezoidal section, while a thin plate material is bent, forming the trapezoidal section, and the fanwise bottom is stickily locked to an inner surface with gum tape 4a or the like. Therefore, even if a side plate stiffener is attached in advance of a roof floating process, in time of floating a roof body 5, an outer edge part of a roof airtight seal 13 made of a flexible material deforms itself easily following the form of the temporary work stiffener cover 4 and can be slidingly going upward while maintaining the airtightness in time of passing a portion of a stiffener 3. |
