| 摘要 |
A structural element (1), substantially wedge shaped and having an apex portion (3) and a bottom portion (5), two opposed beveled sides (7) inclined toward the apex portion, and two lateral sides (9). The bottom portion comprises first connecting means (13) for attaching to elongated flat bars (15) and the beveled sides (7) comprise second connecting means (39, 41) for connecting two beveled sides of similar such structural elements. The first connecting means (13) preferably comprises an aperture (19) which adapts to receive corresponding neck (23) of the bar (15), the aperture (19) comprises a pair of opposed aligned notches (21) allowing the insertion of a broadened portion (48) of the bar (15) therethrough.
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