| 摘要 |
<p>The surface (D) has two carrier groups (TG) consisting of longitudinal beams (TI), which run parallel together and are connected together by short cross beams (Tq) running vertically or diagonally. The carrier groups are aligned parallel and vertical together. The carrier groups are provided on a surface below the rood surface and upwardly projected around desired height of a roof safety barrier over the roof surface. The carrier groups are detachably connected with a third carrier group, a carrier or a base plate (G), where the third carrier group is aligned horizontally.</p> |
