| 摘要 |
<p>The roof consits of horizontal girders purlins and roof plates (5aa. The girders can be made of solid wood laminated wood and pre-stressed concrete. The ends are supported by the sections of the building being covered by the roof, such as tubes or bars. The metal tubes (7) are held slightly above the upper surfaces (8) of the horizontal girders by fixtures (9) spaced out along the girders on their upper surface (8). Each fixture has a base made of metal with holes in for screwing onto the girder. The ends of the horizontal beams have angle pieces for fixing them to the inner surface of the corresponding edge of the roofing panel.</p> |
