| 摘要 |
<p>An arch 1, particularly for supporting plasterboard panels 1a, has a first elongated, curved body 2 formed from a number of elements 6, that are aligned along a longitudinal axis 4 of the said first body 2 and are connected to each other by respective virtual hinges 8 that permit relative rotation of each element 6 with respect to the element 6 adjacent to it around a relative axis transverse to the longitudinal axis 4; the arch 1 also has at least one second elongated stiffening body 3 that extends along the primary body 2, and is rigidly connected to the said first body 2; the first 2 and second body 3 are similar to each other and are obtained from the respective flat similar forgings 19. <IMAGE></p> |
