| 摘要 |
<p>A roof skin is raised to its operative position, on supports movably mounted on side posts, in the frame tent. It is stretched in a hood shape over a tyre-type holder, with the apex held below the point of contact of cantilevered arms sloping towards each other. Two of the tyre-shaped retainers (36) are sited close together, to define two adjoining hood-type type roof pieces spanning an elongated rectangular area (17). Each roof piece is hung below four posts in contact with their cantilevered arms above the centre of the roof (Z). This enables the rectangular areas to be covered, and no foundations are needed.</p> |
