| 摘要 |
An arch-shaped or barrel rooflight comprises several juxtaposed arch-shaped glazing panels (1) interconnected along their edges by glazing bars (4). In a single-glazed case the glazing bars comprise upper and lower bar members (21 and 22) supported on a receiving frame (7) on an upstand from a roof. The two bar members grip the edges of the panels but are themselves spaced apart to avoid a thermal bridge. The bar members are held together by means of the tension generated in the upper by an axial bolt (36) fixed to the receiving frame. A complementary compression is induced in the lower bar member. |
