| 摘要 |
System based on compound sections (profiles) 1 and 2 which meet at connection nodes equipped with arms 10. Each one of the aforesaid sections is composed of two identical single sections 3 and 4 which are parallel and joined by intermediate connectors 5, forming a double-T configuration with a discontinuous core. The arms 10 of the nodes are dimensioned in order to be inserted tightly between the end portions of the single sections 3 and 4 which form the compound section. <IMAGE>
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