| 摘要 |
A building frame has multiple bars and two brace assemblies. Each bar is a straight rectangular bar and has a top surface and bottom surface and two mounting surfaces. The mounting surfaces may be indented surface respectively formed in the top and bottom surfaces of the bar. The brace assemblies are parallel with each other and each brace assembly has a primary brace and a secondary brace leant against the primary brace. The primary and secondary braces both have multiple mounting recesses being separately formed therein. Each mounting recess on the primary brace aligns with one mounting recess of the secondary brace. The mounting recesses of the primary brace and secondary brace correspond to and are engaged respectively the mounting surface of the top and bottom surfaces of one bar when the primary and secondary are alternatively moved.
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