| 摘要 |
A frame, in particular for dome shaped roofs, is made up of support sections which run together at junction points where they are joined together; rectangular hollow sections are employed as the support sections and at each junction point two dish-shaped plates at least one of which features a hole providing access by hand to introduce joining means such as threaded bolts, locking ring bolts to attach the ends of the hollow sections to the round plates. |
