| 摘要 |
<p>The frame is installed with the aid of an auxiliary lifting piece (6) comprising a top support (16) with an upwards-pointing male portion and a bottom support (10). This male portion is at least partly introduced into a cavity with an open bottom side, located in the upper threshold of the frame at a distance from the frame inner side. The bottom support is positioned beneath the lower threshold of the frame. Once the frame is resting against at least one of these supports it is raised via the lifting piece, e.g. using a crane. The cavity is groove-shaped. Independent claims are also included for the following: (1) Frame for installation using this method, the cavity in the upper threshold being located at a distance of at least 5 mm from the frame outer side; and (2) Auxiliary lifting piece used in this method, comprising an arm (7) with top and bottom supports.</p> |
