| 摘要 |
PROBLEM TO BE SOLVED: To provide a hardly deformable roof frame having a simple structure. SOLUTION: In this roof frame, a plurality of first arc-shaped structural long parts 6 curved upward are arranged in parallel at some intervals in its width direction from one end of a roof to the other end, while a plurality of second structural long parts 7 crossing the first structural long parts 6 at right angles or at right angles substantially on the roof surface are arranged in parallel at some intervals. In respective rectangular roof frameworks 8 each constructed of a pair of adjacent first structural long parts 6 and a pair of adjacent second structural long parts 7, at least the rectangular roof framework 8A positioned in the corner of the roof is provided with a brace 9 arranged on the diagonal line passing the roof angle among a pair of diagonal lines of the rectangular roof frameworks 8A positioned in the corners.
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